Added support for track segments

gpxsee.pro

@@ -82,6 +82,7 @@ HEADERS += src/common/config.h \
     src/GUI/searchpointer.h \
     src/GUI/mapview.h \
     src/GUI/font.h \
+    src/GUI/areaitem.h \
     src/map/projection.h \
     src/map/ellipsoid.h \
     src/map/datum.h \
@@ -131,6 +132,7 @@ HEADERS += src/common/config.h \
     src/map/image.h \
     src/map/mbtilesmap.h \
     src/map/osm.h \
+    src/map/polarstereographic.h \
     src/data/graph.h \
     src/data/poi.h \
     src/data/waypoint.h \
@@ -153,10 +155,8 @@ HEADERS += src/common/config.h \
     src/data/locparser.h \
     src/data/slfparser.h \
     src/data/dem.h \
-    src/map/polarstereographic.h \
     src/data/polygon.h \
-    src/data/area.h \
+    src/data/area.h
-    src/GUI/areaitem.h
 SOURCES += src/main.cpp \
     src/common/coordinates.cpp \
     src/common/rectc.cpp \
@@ -206,6 +206,7 @@ SOURCES += src/main.cpp \
     src/GUI/powergraphitem.cpp \
     src/GUI/gearratiographitem.cpp \
     src/GUI/mapview.cpp \
+    src/GUI/areaitem.cpp \
     src/map/maplist.cpp \
     src/map/onlinemap.cpp \
     src/map/downloader.cpp \
@@ -250,6 +251,8 @@ SOURCES += src/main.cpp \
     src/map/image.cpp \
     src/map/mbtilesmap.cpp \
     src/map/osm.cpp \
+    src/map/polarstereographic.cpp \
+    src/map/rectd.cpp \
     src/data/data.cpp \
     src/data/poi.cpp \
     src/data/track.cpp \
@@ -266,10 +269,7 @@ SOURCES += src/main.cpp \
     src/data/locparser.cpp \
     src/data/slfparser.cpp \
     src/data/dem.cpp \
-    src/map/polarstereographic.cpp \
+    src/data/polygon.cpp
-    src/map/rectd.cpp \
-    src/data/polygon.cpp \
-    src/GUI/areaitem.cpp
 
 greaterThan(QT_MAJOR_VERSION, 4) {
     HEADERS += src/data/geojsonparser.h

src/GUI/cadencegraphitem.cpp

@@ -6,17 +6,6 @@
 CadenceGraphItem::CadenceGraphItem(const Graph &graph, GraphType type,
   QGraphicsItem *parent) : GraphItem(graph, type, parent)
 {
-	qreal sum = 0;
-	_max = graph.first().y();
-
-	for (int i = 1; i < graph.size(); i++) {
-		qreal y = graph.at(i).y();
-		sum += y * (graph.at(i).s() - graph.at(i-1).s());
-		if (y > _max)
-			_max = y;
-	}
-	_avg = sum/graph.last().s();
-
 	setToolTip(toolTip());
 }
 

src/GUI/cadencegraphitem.h

@@ -11,13 +11,8 @@ public:
 	CadenceGraphItem(const Graph &graph, GraphType type,
 	  QGraphicsItem *parent = 0);
 
-	qreal max() const {return _max;}
-	qreal avg() const {return _avg;}
-
 private:
 	QString toolTip() const;
-
-	qreal _avg, _max;
 };
 
 #endif // CADENCEGRAPHITEM_H

src/GUI/elevationgraphitem.cpp

@@ -6,22 +6,22 @@
 ElevationGraphItem::ElevationGraphItem(const Graph &graph, GraphType type,
   QGraphicsItem *parent) : GraphItem(graph, type, parent)
 {
-	_ascent = _descent = 0;
+	_min = GraphItem::min();
-	_min = _max = graph.first().y();
+	_max = GraphItem::max();
 
-	for (int j = 1; j < graph.size(); j++) {
+	_ascent = _descent = 0;
-		qreal cur = graph.at(j).y();
+	for (int i = 0; i < graph.size(); i++) {
-		qreal prev = graph.at(j-1).y();
+		const GraphSegment &segment = graph.at(i);
+
+		for (int j = 1; j < segment.size(); j++) {
+			qreal cur = segment.at(j).y();
+			qreal prev = segment.at(j-1).y();
 
 			if (cur > prev)
 				_ascent += cur - prev;
 			if (cur < prev)
 				_descent += prev - cur;
-
+		}
-		if (cur < _min)
-			_min = cur;
-		if (cur > _max)
-			_max = cur;
 	}
 
 	setToolTip(toolTip(Metric));

src/GUI/elevationgraphitem.h

@@ -13,8 +13,8 @@ public:
 
 	qreal ascent() const {return _ascent;}
 	qreal descent() const {return _descent;}
-	qreal min() const {return _min;}
+	qreal max() const {return _min;}
-	qreal max() const {return _max;}
+	qreal min() const {return _max;}
 
 	void setUnits(Units units);
 

src/GUI/gearratiographitem.cpp

@@ -8,19 +8,6 @@ GearRatioGraphItem::GearRatioGraphItem(const Graph &graph, GraphType type,
   QGraphicsItem *parent) : GraphItem(graph, type, parent), _top(NAN)
 {
 	qreal val = NAN;
-	_min = _max = graph.first().y();
-
-	for (int i = 1; i < graph.size(); i++) {
-		const GraphPoint &p = graph.at(i);
-
-		qreal val = _map.value(p.y());
-		_map.insert(p.y(), val + (p.s() - graph.at(i-1).s()));
-
-		if (p.y() < _min)
-			_min = p.y();
-		if (p.y() > _max)
-			_max = p.y();
-	}
 
 	for (QMap<qreal, qreal>::const_iterator it = _map.constBegin();
 	  it != _map.constEnd(); ++it) {

src/GUI/gearratiographitem.h

@@ -12,8 +12,6 @@ public:
 	GearRatioGraphItem(const Graph &graph, GraphType type,
 	  QGraphicsItem *parent = 0);
 
-	qreal min() const {return _min;}
-	qreal max() const {return _max;}
 	qreal top() const {return _top;}
 
 	const QMap<qreal, qreal> &map() const {return _map;}
@@ -22,7 +20,7 @@ private:
 	QString toolTip() const;
 
 	QMap<qreal, qreal> _map;
-	qreal _top, _min, _max;
+	qreal _top;
 };
 
 #endif // GEARRATIOGRAPHITEM_H

src/GUI/graphitem.cpp

@@ -3,26 +3,17 @@
 
 
 GraphItem::GraphItem(const Graph &graph, GraphType type, QGraphicsItem *parent)
-  : QGraphicsObject(parent)
+  : QGraphicsObject(parent), _graph(graph), _type(type)
 {
+	Q_ASSERT(_graph.isValid());
+
 	_id = 0;
 	_width = 1;
-
 	_pen = QPen(Qt::black, _width);
-
-	_type = type;
-	_graph = graph;
 	_sx = 1.0; _sy = 1.0;
+	_time = _graph.hasTime();
 
-	_time = true;
+	setZValue(2.0);
-	for (int i = 0; i < _graph.size(); i++) {
-		if (std::isnan(_graph.at(i).t())) {
-			_time = false;
-			break;
-		}
-	}
-
-	setZValue(1.0);
 
 	updatePath();
 	updateShape();
@@ -89,18 +80,31 @@ void GraphItem::setWidth(int width)
 	updateShape();
 }
 
+const GraphSegment *GraphItem::segment(qreal x, GraphType type) const
+{
+	for (int i = 0; i < _graph.size(); i++)
+		if (x <= _graph.at(i).last().x(type))
+			return &(_graph.at(i));
+
+	return 0;
+}
+
 qreal GraphItem::yAtX(qreal x)
 {
+	const GraphSegment *seg = segment(x, _type);
+	if (!seg)
+		return NAN;
+
 	int low = 0;
-	int high = _graph.count() - 1;
+	int high = seg->count() - 1;
 	int mid = 0;
 
-	Q_ASSERT(high > low);
+	if (!(x >= seg->at(low).x(_type) && x <= seg->at(high).x(_type)))
-	Q_ASSERT(x >= _graph.at(low).x(_type) && x <= _graph.at(high).x(_type));
+		return NAN;
 
 	while (low <= high) {
 		mid = low + ((high - low) / 2);
-		const GraphPoint &p = _graph.at(mid);
+		const GraphPoint &p = seg->at(mid);
 		if (p.x(_type) > x)
 			high = mid - 1;
 		else if (p.x(_type) < x)
@@ -110,58 +114,56 @@ qreal GraphItem::yAtX(qreal x)
 	}
 
 	QLineF l;
-	if (_graph.at(mid).x(_type) < x)
+	if (seg->at(mid).x(_type) < x)
-		l = QLineF(_graph.at(mid).x(_type), _graph.at(mid).y(),
+		l = QLineF(seg->at(mid).x(_type), seg->at(mid).y(),
-		  _graph.at(mid+1).x(_type), _graph.at(mid+1).y());
+		  seg->at(mid+1).x(_type), seg->at(mid+1).y());
 	else
-		l = QLineF(_graph.at(mid-1).x(_type), _graph.at(mid-1).y(),
+		l = QLineF(seg->at(mid-1).x(_type), seg->at(mid-1).y(),
-		  _graph.at(mid).x(_type), _graph.at(mid).y());
+		  seg->at(mid).x(_type), seg->at(mid).y());
 
 	return -l.pointAt((x - l.p1().x()) / (l.p2().x() - l.p1().x())).y();
 }
 
 qreal GraphItem::distanceAtTime(qreal time)
 {
+	const GraphSegment *seg = segment(time, Time);
+	if (!seg)
+		return NAN;
+
 	int low = 0;
-	int high = _graph.count() - 1;
+	int high = seg->count() - 1;
 	int mid = 0;
 
-	Q_ASSERT(high > low);
+	if (!(time >= seg->at(low).t() && time <= seg->at(high).t()))
-	Q_ASSERT(time >= _graph.at(low).t() && time <= _graph.at(high).t());
+		return NAN;
 
 	while (low <= high) {
 		mid = low + ((high - low) / 2);
-		const GraphPoint &p = _graph.at(mid);
+		const GraphPoint &p = seg->at(mid);
 		if (p.t() > time)
 			high = mid - 1;
 		else if (p.t() < time)
 			low = mid + 1;
 		else
-			return _graph.at(mid).s();
+			return seg->at(mid).s();
 	}
 
 	QLineF l;
-	if (_graph.at(mid).t() < time)
+	if (seg->at(mid).t() < time)
-		l = QLineF(_graph.at(mid).t(), _graph.at(mid).s(), _graph.at(mid+1).t(),
+		l = QLineF(seg->at(mid).t(), seg->at(mid).s(), seg->at(mid+1).t(),
-		  _graph.at(mid+1).s());
+		  seg->at(mid+1).s());
 	else
-		l = QLineF(_graph.at(mid-1).t(), _graph.at(mid-1).s(),
+		l = QLineF(seg->at(mid-1).t(), seg->at(mid-1).s(),
-		  _graph.at(mid).t(), _graph.at(mid).s());
+		  seg->at(mid).t(), seg->at(mid).s());
 
 	return l.pointAt((time - l.p1().x()) / (l.p2().x() - l.p1().x())).y();
 }
 
 void GraphItem::emitSliderPositionChanged(qreal pos)
 {
-	if (_type == Time) {
+	if (_type == Time)
-		if (_time) {
+		emit sliderPositionChanged(_time ? distanceAtTime(pos) : NAN);
-			if (pos >= _graph.first().t() && pos <= _graph.last().t())
-				emit sliderPositionChanged(distanceAtTime(pos));
 	else
-				emit sliderPositionChanged(NAN);
-		} else
-			emit sliderPositionChanged(NAN);
-	} else
 		emit sliderPositionChanged(pos);
 }
 
@@ -197,9 +199,13 @@ void GraphItem::updatePath()
 	if (_type == Time && !_time)
 		return;
 
-	_path.moveTo(_graph.first().x(_type) * _sx, -_graph.first().y() * _sy);
+	for (int i = 0; i < _graph.size(); i++) {
-	for (int i = 1; i < _graph.size(); i++)
+		const GraphSegment &segment = _graph.at(i);
-		_path.lineTo(_graph.at(i).x(_type) * _sx, -_graph.at(i).y() * _sy);
+
+		_path.moveTo(segment.first().x(_type) * _sx, -segment.first().y() * _sy);
+		for (int i = 1; i < segment.size(); i++)
+			_path.lineTo(segment.at(i).x(_type) * _sx, -segment.at(i).y() * _sy);
+	}
 }
 
 void GraphItem::updateBounds()
@@ -211,18 +217,71 @@ void GraphItem::updateBounds()
 
 	qreal bottom, top, left, right;
 
-	QPointF p = QPointF(_graph.first().x(_type), -_graph.first().y());
+	QPointF p = QPointF(_graph.first().first().x(_type),
+	  -_graph.first().first().y());
 	bottom = p.y(); top = p.y(); left = p.x(); right = p.x();
 
-	for (int i = 1; i < _graph.size(); i++) {
+	for (int i = 0; i < _graph.size(); i++) {
-		p = QPointF(_graph.at(i).x(_type), -_graph.at(i).y());
+		const GraphSegment &segment = _graph.at(i);
+
+		for (int j = 0; j < segment.size(); j++) {
+			p = QPointF(segment.at(j).x(_type), -segment.at(j).y());
 			bottom = qMax(bottom, p.y()); top = qMin(top, p.y());
 			right = qMax(right, p.x()); left = qMin(left, p.x());
 		}
+	}
 
 	_bounds = QRectF(QPointF(left, top), QPointF(right, bottom));
 }
 
+qreal GraphItem::max() const
+{
+	qreal ret = _graph.first().first().y();
+
+	for (int i = 0; i < _graph.size(); i++) {
+		const GraphSegment &segment = _graph.at(i);
+
+		for (int j = 0; j < segment.size(); j++) {
+			qreal y = segment.at(j).y();
+			if (y > ret)
+				ret = y;
+		}
+	}
+
+	return ret;
+}
+
+qreal GraphItem::min() const
+{
+	qreal ret = _graph.first().first().y();
+
+	for (int i = 0; i < _graph.size(); i++) {
+		const GraphSegment &segment = _graph.at(i);
+
+		for (int j = 0; j < segment.size(); j++) {
+			qreal y = segment.at(j).y();
+			if (y < ret)
+				ret = y;
+		}
+	}
+
+	return ret;
+}
+
+qreal GraphItem::avg() const
+{
+	qreal sum = 0;
+
+	for (int i = 0; i < _graph.size(); i++) {
+		const GraphSegment &segment = _graph.at(i);
+
+		for (int j = 1; j < segment.size(); j++)
+			sum += segment.at(j).y() * (segment.at(j).s() - segment.at(j-1).s());
+	}
+
+	return sum/_graph.last().last().s();
+}
+
 void GraphItem::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
 {
 	Q_UNUSED(event);

src/GUI/graphitem.h

@@ -21,6 +21,10 @@ public:
 
 	const QRectF &bounds() const {return _bounds;}
 
+	qreal max() const;
+	qreal min() const;
+	qreal avg() const;
+
 	void setScale(qreal sx, qreal sy);
 	void setGraphType(GraphType type);
 	int id() const {return _id;}
@@ -46,6 +50,7 @@ private:
 	void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
 	void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
 
+	const GraphSegment *segment(qreal x, GraphType type) const;
 	void updatePath();
 	void updateShape();
 	void updateBounds();

src/GUI/graphview.cpp

@@ -34,9 +34,9 @@ GraphView::GraphView(QWidget *parent)
 	setBackgroundBrush(QBrush(palette().brush(QPalette::Base)));
 
 	_xAxis = new AxisItem(AxisItem::X);
-	_xAxis->setZValue(2.0);
+	_xAxis->setZValue(1.0);
 	_yAxis = new AxisItem(AxisItem::Y);
-	_yAxis->setZValue(2.0);
+	_yAxis->setZValue(1.0);
 	_slider = new SliderItem();
 	_slider->setZValue(3.0);
 	_sliderInfo = new SliderInfoItem(_slider);

src/GUI/heartrategraphitem.cpp

@@ -6,17 +6,6 @@
 HeartRateGraphItem::HeartRateGraphItem(const Graph &graph, GraphType type,
   QGraphicsItem *parent) : GraphItem(graph, type, parent)
 {
-	qreal sum = 0;
-	_max = graph.first().y();
-
-	for (int i = 1; i < graph.size(); i++) {
-		qreal y = graph.at(i).y();
-		sum += y * (graph.at(i).s() - graph.at(i-1).s());
-		if (y > _max)
-			_max = y;
-	}
-	_avg = sum/graph.last().s();
-
 	setToolTip(toolTip());
 }
 

src/GUI/heartrategraphitem.h

@@ -11,13 +11,8 @@ public:
 	HeartRateGraphItem(const Graph &graph, GraphType type,
 	  QGraphicsItem *parent = 0);
 
-	qreal max() const {return _max;}
-	qreal avg() const {return _avg;}
-
 private:
 	QString toolTip() const;
-
-	qreal _avg, _max;
 };
 
 #endif // HEARTRATEGRAPHITEM_H

src/GUI/pathitem.cpp

@@ -8,19 +8,22 @@
 
 #define GEOGRAPHICAL_MILE 1855.3248
 
-static unsigned segments(qreal distance)
+static inline bool isInvalid(const QPointF &p)
+{
+	return (std::isnan(p.x()) || std::isnan(p.y()));
+}
+
+static inline unsigned segments(qreal distance)
 {
 	return ceil(distance / GEOGRAPHICAL_MILE);
 }
 
 PathItem::PathItem(const Path &path, Map *map, QGraphicsItem *parent)
-  : QGraphicsObject(parent), _path(path)
+  : QGraphicsObject(parent), _path(path), _map(map)
 {
-	Q_ASSERT(path.count() >= 2);
+	Q_ASSERT(_path.isValid());
 
-	_map = map;
 	_digitalZoom = 0;
-
 	_width = 3;
 	QBrush brush(Qt::SolidPattern);
 	_pen = QPen(brush, _width);
@@ -29,8 +32,8 @@ PathItem::PathItem(const Path &path, Map *map, QGraphicsItem *parent)
 	updateShape();
 
 	_marker = new MarkerItem(this);
-	_marker->setPos(position(_path.at(0).distance()));
+	_marker->setPos(position(_path.first().first().distance()));
-	_markerDistance = _path.at(0).distance();
+	_markerDistance = _path.first().first().distance();
 
 	setCursor(Qt::ArrowCursor);
 	setAcceptHoverEvents(true);
@@ -73,18 +76,21 @@ void PathItem::updatePainterPath()
 {
 	_painterPath = QPainterPath();
 
-	_painterPath.moveTo(_map->ll2xy(_path.first().coordinates()));
+	for (int i = 0; i < _path.size(); i++) {
-	for (int i = 1; i < _path.size(); i++) {
+		const PathSegment &segment = _path.at(i);
-		const PathPoint &p1 = _path.at(i-1);
+		_painterPath.moveTo(_map->ll2xy(segment.first().coordinates()));
-		const PathPoint &p2 = _path.at(i);
+
+		for (int j = 1; j < segment.size(); j++) {
+			const PathPoint &p1 = segment.at(j-1);
+			const PathPoint &p2 = segment.at(j);
 			unsigned n = segments(p2.distance() - p1.distance());
 
 			if (n > 1) {
 				GreatCircle gc(p1.coordinates(), p2.coordinates());
 				Coordinates last = p1.coordinates();
 
-			for (unsigned j = 1; j <= n; j++) {
+				for (unsigned k = 1; k <= n; k++) {
-				Coordinates c(gc.pointAt(j/(double)n));
+					Coordinates c(gc.pointAt(k/(double)n));
 					addSegment(last, c);
 					last = c;
 				}
@@ -92,6 +98,7 @@ void PathItem::updatePainterPath()
 				addSegment(p1.coordinates(), p2.coordinates());
 		}
 	}
+}
 
 void PathItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
 	  QWidget *widget)
@@ -166,35 +173,48 @@ void PathItem::setDigitalZoom(int zoom)
 	updateShape();
 }
 
+const PathSegment *PathItem::segment(qreal x) const
+{
+	for (int i = 0; i < _path.size(); i++)
+		if (x <= _path.at(i).last().distance())
+			return &(_path.at(i));
+
+	return 0;
+}
+
 QPointF PathItem::position(qreal x) const
 {
+	const PathSegment *seg = segment(x);
+	if (!seg)
+		return QPointF(NAN, NAN);
+
 	int low = 0;
-	int high = _path.count() - 1;
+	int high = seg->count() - 1;
 	int mid = 0;
 
-	Q_ASSERT(high > low);
+	if (!(x >= seg->first().distance() && x <= seg->last().distance()))
-	Q_ASSERT(x >= _path.at(low).distance() && x <= _path.at(high).distance());
+		return QPointF(NAN, NAN);
 
 	while (low <= high) {
 		mid = low + ((high - low) / 2);
-		qreal val = _path.at(mid).distance();
+		qreal val = seg->at(mid).distance();
 		if (val > x)
 			high = mid - 1;
 		else if (val < x)
 			low = mid + 1;
 		else
-			return _map->ll2xy(_path.at(mid).coordinates());
+			return _map->ll2xy(seg->at(mid).coordinates());
 	}
 
 	Coordinates c1, c2;
 	qreal p1, p2;
 
-	if (_path.at(mid).distance() < x) {
+	if (seg->at(mid).distance() < x) {
-		c1 = _path.at(mid).coordinates(); c2 = _path.at(mid+1).coordinates();
+		c1 = seg->at(mid).coordinates(); c2 = seg->at(mid+1).coordinates();
-		p1 = _path.at(mid).distance(); p2 = _path.at(mid+1).distance();
+		p1 = seg->at(mid).distance(); p2 = seg->at(mid+1).distance();
 	} else {
-		c1 = _path.at(mid-1).coordinates(); c2 = _path.at(mid).coordinates();
+		c1 = seg->at(mid-1).coordinates(); c2 = seg->at(mid).coordinates();
-		p1 = _path.at(mid-1).distance(); p2 = _path.at(mid).distance();
+		p1 = seg->at(mid-1).distance(); p2 = seg->at(mid).distance();
 	}
 
 	unsigned n = segments(p2 - p1);
@@ -224,13 +244,15 @@ QPointF PathItem::position(qreal x) const
 
 void PathItem::moveMarker(qreal distance)
 {
-	if (distance >= _path.first().distance()
+	QPointF pos(position(distance));
-	  && distance <= _path.last().distance()) {
+
-		_marker->setVisible(true);
+	if (isInvalid(pos))
-		_marker->setPos(position(distance));
-		_markerDistance = distance;
-	} else
 		_marker->setVisible(false);
+	else {
+		_marker->setVisible(true);
+		_marker->setPos(pos);
+		_markerDistance = distance;
+	}
 }
 
 void PathItem::setMarkerColor(const QColor &color)

src/GUI/pathitem.h

@@ -42,6 +42,7 @@ protected:
 	MarkerItem *_marker;
 
 private:
+	const PathSegment *segment(qreal x) const;
 	QPointF position(qreal distance) const;
 	void updatePainterPath();
 	void updateShape();

src/GUI/powergraphitem.cpp

@@ -6,17 +6,6 @@
 PowerGraphItem::PowerGraphItem(const Graph &graph, GraphType type,
   QGraphicsItem *parent) : GraphItem(graph, type, parent)
 {
-	qreal sum = 0;
-	_max = graph.first().y();
-
-	for (int i = 1; i < graph.size(); i++) {
-		qreal y = graph.at(i).y();
-		sum += y * (graph.at(i).s() - graph.at(i-1).s());
-		if (y > _max)
-			_max = y;
-	}
-	_avg = sum/graph.last().s();
-
 	setToolTip(toolTip());
 }
 

src/GUI/powergraphitem.h

@@ -11,13 +11,8 @@ public:
 	PowerGraphItem(const Graph &graph, GraphType type,
 	  QGraphicsItem *parent = 0);
 
-	qreal max() const {return _max;}
-	qreal avg() const {return _avg;}
-
 private:
 	QString toolTip() const;
-
-	qreal _avg, _max;
 };
 
 #endif // POWERGRAPHITEM_H

src/GUI/routeitem.cpp

@@ -15,7 +15,8 @@ QString RouteItem::toolTip(Units units) const
 		tt.insert(tr("Name"), _name);
 	if (!_desc.isEmpty())
 		tt.insert(tr("Description"), _desc);
-	tt.insert(tr("Distance"), Format::distance(_path.last().distance(), units));
+	tt.insert(tr("Distance"), Format::distance(_path.last().last().distance(),
+	  units));
 
 	return tt.toString();
 }

src/GUI/speedgraphitem.cpp

@@ -10,15 +10,9 @@ SpeedGraphItem::SpeedGraphItem(const Graph &graph, GraphType type,
 	_units = Metric;
 	_timeType = Total;
 
-	_avg = graph.last().s() / graph.last().t();
+	_max = GraphItem::max();
-	_mavg = graph.last().s() / movingTime;
+	_avg = graph.last().last().s() / graph.last().last().t();
-
+	_mavg = graph.last().last().s() / movingTime;
-	_max = graph.first().y();
-	for (int i = 1; i < graph.size(); i++) {
-		qreal y = graph.at(i).y();
-		if (y > _max)
-			_max = y;
-	}
 
 	setToolTip(toolTip());
 }

src/GUI/speedgraphitem.h

@@ -12,9 +12,9 @@ public:
 	SpeedGraphItem(const Graph &graph, GraphType type, qreal movingTime,
 	  QGraphicsItem *parent = 0);
 
-	qreal max() const {return _max;}
 	qreal avg() const {return _avg;}
 	qreal mavg() const {return _mavg;}
+	qreal max() const {return _max;}
 
 	void setUnits(Units units);
 	void setTimeType(TimeType type);

src/GUI/temperaturegraphitem.cpp

@@ -6,20 +6,9 @@
 TemperatureGraphItem::TemperatureGraphItem(const Graph &graph, GraphType type,
   QGraphicsItem *parent) : GraphItem(graph, type, parent)
 {
-	qreal sum = 0;
+	_min = GraphItem::min();
-	_min = _max = graph.first().y();
+	_max = GraphItem::max();
-
+	_avg = GraphItem::avg();
-	for (int j = 1; j < graph.size(); j++) {
-		qreal y = graph.at(j).y();
-
-		sum += graph.at(j).y() * (graph.at(j).s() - graph.at(j-1).s());
-
-		if (y > _max)
-			_max = y;
-		if (y < _min)
-			_min = y;
-	}
-	_avg = sum/graph.last().s();
 
 	setToolTip(toolTip(Metric));
 }

src/GUI/temperaturegraphitem.h

@@ -20,7 +20,7 @@ public:
 private:
 	QString toolTip(Units units) const;
 
-	qreal _avg, _min, _max;
+	qreal _min, _max, _avg;
 };
 
 #endif // TEMPERATUREGRAPHITEM_H

src/GUI/trackitem.cpp

@@ -13,7 +13,8 @@ QString TrackItem::toolTip(Units units) const
 		tt.insert(tr("Name"), _name);
 	if (!_desc.isEmpty())
 		tt.insert(tr("Description"), _desc);
-	tt.insert(tr("Distance"), Format::distance(_path.last().distance(), units));
+	tt.insert(tr("Distance"), Format::distance(_path.last().last().distance(),
+	  units));
 	if  (_time > 0)
 		tt.insert(tr("Total time"), Format::timeSpan(_time));
 	if  (_movingTime > 0)

src/data/fitparser.cpp

@@ -58,7 +58,7 @@ public:
 	MessageDefinition defs[16];
 	qreal ratio;
 	Trackpoint trackpoint;
-	TrackData track;
+	SegmentData segment;
 };
 
 
@@ -306,7 +306,7 @@ bool FITParser::parseData(CTX &ctx, const MessageDefinition *def)
 			ctx.trackpoint.setTimestamp(QDateTime::fromTime_t(ctx.timestamp
 			  + 631065600));
 			ctx.trackpoint.setRatio(ctx.ratio);
-			ctx.track.append(ctx.trackpoint);
+			ctx.segment.append(ctx.trackpoint);
 			ctx.trackpoint = Trackpoint();
 			ctx.lastWrite = ctx.timestamp;
 		}
@@ -388,7 +388,8 @@ bool FITParser::parse(QFile *file, QList<TrackData> &tracks,
 		if (!parseRecord(ctx))
 			return false;
 
-	tracks.append(ctx.track);
+	tracks.append(TrackData());
+	tracks.last().append(ctx.segment);
 
 	return true;
 }

src/data/geojsonparser.cpp

@@ -70,17 +70,9 @@ bool GeoJSONParser::multiPoint(const QJsonArray &coordinates,
 	return true;
 }
 
-bool GeoJSONParser::lineString(const QJsonArray &coordinates, TrackData &track,
+bool GeoJSONParser::lineString(const QJsonArray &coordinates,
-  const QJsonObject &properties)
+  SegmentData &segment)
 {
-	if (properties.contains("title") && properties["title"].isString())
-		track.setName(properties["title"].toString());
-	if (properties.contains("name") && properties["name"].isString())
-		track.setName(properties["name"].toString());
-	if (properties.contains("description")
-	  && properties["description"].isString())
-		track.setDescription(properties["description"].toString());
-
 	for (int i = 0; i < coordinates.size(); i++) {
 		QJsonArray point(coordinates.at(i).toArray());
 		if (point.count() < 2 || !point.at(0).isDouble()
@@ -93,23 +85,48 @@ bool GeoJSONParser::lineString(const QJsonArray &coordinates, TrackData &track,
 		  point.at(1).toDouble()));
 		if (point.count() == 3 && point.at(2).isDouble())
 			t.setElevation(point.at(2).toDouble());
-		track.append(t);
+		segment.append(t);
 	}
 
 	return true;
 }
 
-bool GeoJSONParser::multiLineString(const QJsonArray &coordinates,
+bool GeoJSONParser::lineString(const QJsonArray &coordinates, TrackData &track,
-  QList<TrackData> &tracks, const QJsonObject &properties)
+  const QJsonObject &properties)
 {
+	if (properties.contains("title") && properties["title"].isString())
+		track.setName(properties["title"].toString());
+	if (properties.contains("name") && properties["name"].isString())
+		track.setName(properties["name"].toString());
+	if (properties.contains("description")
+	  && properties["description"].isString())
+		track.setDescription(properties["description"].toString());
+
+	track.append(SegmentData());
+
+	lineString(coordinates, track.last());
+
+	return true;
+}
+
+bool GeoJSONParser::multiLineString(const QJsonArray &coordinates,
+  TrackData &track, const QJsonObject &properties)
+{
+	if (properties.contains("title") && properties["title"].isString())
+		track.setName(properties["title"].toString());
+	if (properties.contains("name") && properties["name"].isString())
+		track.setName(properties["name"].toString());
+	if (properties.contains("description")
+	  && properties["description"].isString())
+		track.setDescription(properties["description"].toString());
+
 	for (int i = 0; i < coordinates.size(); i++) {
 		if (!coordinates.at(i).isArray()) {
 			_errorString = "Invalid MultiLineString coordinates";
 			return false;
 		} else {
-			tracks.append(TrackData());
+			track.append(SegmentData());
-			if (!lineString(coordinates.at(i).toArray(), tracks.last(),
+			if (!lineString(coordinates.at(i).toArray(), track.last()))
-			  properties))
 				return false;
 		}
 	}
@@ -215,8 +232,9 @@ bool GeoJSONParser::geometryCollection(const QJsonObject &json,
 					return false;
 				break;
 			case MultiLineString:
-				if (!multiLineString(geometry["coordinates"].toArray(), tracks,
+				tracks.append(TrackData());
-				  properties))
+				if (!multiLineString(geometry["coordinates"].toArray(),
+				  tracks.last(), properties))
 					return false;
 				break;
 			case Polygon:
@@ -265,8 +283,9 @@ bool GeoJSONParser::feature(const QJsonObject &json, QList<TrackData> &tracks,
 			return lineString(geometry["coordinates"].toArray(), tracks.last(),
 			  properties);
 		case MultiLineString:
-			return multiLineString(geometry["coordinates"].toArray(), tracks,
+			tracks.append(TrackData());
-			  properties);
+			return multiLineString(geometry["coordinates"].toArray(),
+			  tracks.last(), properties);
 		case GeometryCollection:
 			return geometryCollection(geometry, tracks, areas, waypoints);
 		case Polygon:
@@ -327,7 +346,8 @@ bool GeoJSONParser::parse(QFile *file, QList<TrackData> &tracks,
 			tracks.append(TrackData());
 			return lineString(json["coordinates"].toArray(), tracks.last());
 		case MultiLineString:
-			return multiLineString(json["coordinates"].toArray(), tracks);
+			tracks.append(TrackData());
+			return multiLineString(json["coordinates"].toArray(), tracks.last());
 		case GeometryCollection:
 			return geometryCollection(json, tracks, areas, waypoints);
 		case Feature:

src/data/geojsonparser.h

@@ -34,10 +34,11 @@ private:
 	  const QJsonObject &properties = QJsonObject());
 	bool multiPoint(const QJsonArray &coordinates,
 	  QVector<Waypoint> &waypoints, const QJsonObject &properties = QJsonObject());
+	bool lineString(const QJsonArray &coordinates, SegmentData &segment);
 	bool lineString(const QJsonArray &coordinates, TrackData &track,
 	  const QJsonObject &properties = QJsonObject());
 	bool multiLineString(const QJsonArray &coordinates,
-	  QList<TrackData> &tracks, const QJsonObject &properties = QJsonObject());
+	  TrackData &track, const QJsonObject &properties = QJsonObject());
 	bool polygon(const QJsonArray &coordinates, ::Polygon &pg);
 	bool polygon(const QJsonArray &coordinates, Area &area,
 	  const QJsonObject &properties = QJsonObject());

src/data/gpxparser.cpp

@@ -51,7 +51,7 @@ Coordinates GPXParser::coordinates()
 	return Coordinates(lon, lat);
 }
 
-void GPXParser::rpExtension(TrackData *autoRoute)
+void GPXParser::rpExtension(SegmentData *autoRoute)
 {
 	while (_reader.readNextStartElement()) {
 		if (_reader.name() == QLatin1String("rpt"))
@@ -72,7 +72,7 @@ void GPXParser::tpExtension(Trackpoint &trackpoint)
 	}
 }
 
-void GPXParser::rteptExtensions(TrackData *autoRoute)
+void GPXParser::rteptExtensions(SegmentData *autoRoute)
 {
 	while (_reader.readNextStartElement()) {
 		if (_reader.name() == QLatin1String("RoutePointExtension"))
@@ -124,7 +124,7 @@ void GPXParser::trackpointData(Trackpoint &trackpoint)
 		trackpoint.setElevation(trackpoint.elevation() - gh);
 }
 
-void GPXParser::waypointData(Waypoint &waypoint, TrackData *autoRoute)
+void GPXParser::waypointData(Waypoint &waypoint, SegmentData *autoRoute)
 {
 	qreal gh = NAN;
 
@@ -149,12 +149,12 @@ void GPXParser::waypointData(Waypoint &waypoint, TrackData *autoRoute)
 		waypoint.setElevation(waypoint.elevation() - gh);
 }
 
-void GPXParser::trackpoints(TrackData &track)
+void GPXParser::trackpoints(SegmentData &segment)
 {
 	while (_reader.readNextStartElement()) {
 		if (_reader.name() == QLatin1String("trkpt")) {
-			track.append(Trackpoint(coordinates()));
+			segment.append(Trackpoint(coordinates()));
-			trackpointData(track.last());
+			trackpointData(segment.last());
 		} else
 			_reader.skipCurrentElement();
 	}
@@ -163,11 +163,13 @@ void GPXParser::trackpoints(TrackData &track)
 void GPXParser::routepoints(RouteData &route, QList<TrackData> &tracks)
 {
 	TrackData autoRoute;
+	autoRoute.append(SegmentData());
+	SegmentData &autoRouteSegment = autoRoute.last();
 
 	while (_reader.readNextStartElement()) {
 		if (_reader.name() == QLatin1String("rtept")) {
 			route.append(Waypoint(coordinates()));
-			waypointData(route.last(), &autoRoute);
+			waypointData(route.last(), &autoRouteSegment);
 		} else if (_reader.name() == QLatin1String("name"))
 			route.setName(_reader.readElementText());
 		else if (_reader.name() == QLatin1String("desc"))
@@ -176,7 +178,7 @@ void GPXParser::routepoints(RouteData &route, QList<TrackData> &tracks)
 			_reader.skipCurrentElement();
 	}
 
-	if (!autoRoute.isEmpty()) {
+	if (!autoRouteSegment.isEmpty()) {
 		autoRoute.setName(route.name());
 		autoRoute.setDescription(route.description());
 		tracks.append(autoRoute);
@@ -186,9 +188,10 @@ void GPXParser::routepoints(RouteData &route, QList<TrackData> &tracks)
 void GPXParser::track(TrackData &track)
 {
 	while (_reader.readNextStartElement()) {
-		if (_reader.name() == QLatin1String("trkseg"))
+		if (_reader.name() == QLatin1String("trkseg")) {
-			trackpoints(track);
+			track.append(SegmentData());
-		else if (_reader.name() == QLatin1String("name"))
+			trackpoints(track.last());
+		} else if (_reader.name() == QLatin1String("name"))
 			track.setName(_reader.readElementText());
 		else if (_reader.name() == QLatin1String("desc"))
 			track.setDescription(_reader.readElementText());

src/data/gpxparser.h

@@ -17,16 +17,16 @@ private:
 	void gpx(QList<TrackData> &tracks, QList<RouteData> &routes,
 	  QList<Area> &areas, QVector<Waypoint> &waypoints);
 	void track(TrackData &track);
-	void trackpoints(TrackData &track);
+	void trackpoints(SegmentData &segment);
 	void routepoints(RouteData &route, QList<TrackData> &tracks);
-	void rpExtension(TrackData *autoRoute);
+	void rpExtension(SegmentData *autoRoute);
 	void tpExtension(Trackpoint &trackpoint);
 	void trkptExtensions(Trackpoint &trackpoint);
-	void rteptExtensions(TrackData *autoRoute);
+	void rteptExtensions(SegmentData *autoRoute);
 	void area(Area &area);
 	void gpxExtensions(QList<Area> &areas);
 	void trackpointData(Trackpoint &trackpoint);
-	void waypointData(Waypoint &waypoint, TrackData *autoRoute = 0);
+	void waypointData(Waypoint &waypoint, SegmentData *autoRoute = 0);
 	qreal number();
 	QDateTime time();
 	Coordinates coordinates();

src/data/graph.h

@@ -1,6 +1,7 @@
 #ifndef GRAPH_H
 #define GRAPH_H
 
+#include <QList>
 #include <QVector>
 #include <QDebug>
 #include <cmath>
@@ -39,14 +40,30 @@ inline QDebug operator<<(QDebug dbg, const GraphPoint &point)
 }
 #endif // QT_NO_DEBUG
 
-class Graph : public QVector<GraphPoint>
+typedef QVector<GraphPoint> GraphSegment;
+
+class Graph : public QList<GraphSegment>
 {
 public:
-	Graph() {}
+	bool isValid() const
-	Graph(int size) : QVector<GraphPoint>(size) {}
+	{
-	Graph(const Graph &other) : QVector<GraphPoint>(other) {}
+		if (isEmpty())
-
+			return false;
-	bool isValid() const {return size() >= 2;}
+		for (int i = 0; i < size(); i++)
+			if (at(i).size() < 2)
+				return false;
+		return true;
+	}
+	bool hasTime() const
+	{
+		for (int i = 0; i < size(); i++) {
+			const GraphSegment &segment = at(i);
+			for (int j = 0; j < segment.size(); j++)
+				if (std::isnan(segment.at(j).t()))
+					return false;
+		}
+		return true;
+	}
 };
 
 #endif // GRAPH_H

src/data/igcparser.cpp

@@ -122,7 +122,8 @@ bool IGCParser::readHRecord(const char *line, int len)
 	return true;
 }
 
-bool IGCParser::readBRecord(TrackData &track, const char *line, int len)
+bool IGCParser::readBRecord(SegmentData &segment, const char *line,
+  int len)
 {
 	qreal lat, lon, ele;
 	QTime time;
@@ -158,7 +159,7 @@ bool IGCParser::readBRecord(TrackData &track, const char *line, int len)
 	Trackpoint t(Coordinates(lon, lat));
 	t.setTimestamp(QDateTime(_date, _time, Qt::UTC));
 	t.setElevation(ele);
-	track.append(t);
+	segment.append(t);
 
 	return true;
 }
@@ -240,10 +241,11 @@ bool IGCParser::parse(QFile *file, QList<TrackData> &tracks,
 				}
 				if (!track) {
 					tracks.append(TrackData());
+					tracks.last().append(SegmentData());
 					_time = QTime(0, 0);
 					track = true;
 				}
-				if (!readBRecord(tracks.last(), line, len))
+				if (!readBRecord(tracks.last().last(), line, len))
 					return false;
 			}
 		}

src/data/igcparser.h

@@ -18,7 +18,7 @@ public:
 
 private:
 	bool readHRecord(const char *line, int len);
-	bool readBRecord(TrackData &track, const char *line, int len);
+	bool readBRecord(SegmentData &segment, const char *line, int len);
 	bool readCRecord(RouteData &route, const char *line, int len);
 
 	int _errorLine;

src/data/kmlparser.cpp

@@ -127,7 +127,7 @@ bool KMLParser::pointCoordinates(Waypoint &waypoint)
 	return true;
 }
 
-bool KMLParser::lineCoordinates(TrackData &track)
+bool KMLParser::lineCoordinates(SegmentData &segment)
 {
 	QString data = _reader.readElementText();
 	const QChar *sp, *ep, *cp, *vp;
@@ -170,11 +170,11 @@ bool KMLParser::lineCoordinates(TrackData &track)
 			if (!res)
 				return false;
 
-			track.append(Trackpoint(Coordinates(val[0], val[1])));
+			segment.append(Trackpoint(Coordinates(val[0], val[1])));
-			if (!track.last().coordinates().isValid())
+			if (!segment.last().coordinates().isValid())
 				return false;
 			if (c == 2)
-				track.last().setElevation(val[2]);
+				segment.last().setElevation(val[2]);
 
 			while (cp->isSpace())
 				cp++;
@@ -257,11 +257,11 @@ QDateTime KMLParser::timeStamp()
 	return ts;
 }
 
-void KMLParser::lineString(TrackData &track)
+void KMLParser::lineString(SegmentData &segment)
 {
 	while (_reader.readNextStartElement()) {
 		if (_reader.name() == QLatin1String("coordinates")) {
-			if (!lineCoordinates(track))
+			if (!lineCoordinates(segment))
 				_reader.raiseError("Invalid coordinates");
 		} else
 			_reader.skipCurrentElement();
@@ -328,15 +328,15 @@ void KMLParser::point(Waypoint &waypoint)
 		_reader.raiseError("Missing Point coordinates");
 }
 
-void KMLParser::heartRate(TrackData &track, int start)
+void KMLParser::heartRate(SegmentData &segment, int start)
 {
 	int i = start;
 	const char error[] = "Heartrate data count mismatch";
 
 	while (_reader.readNextStartElement()) {
 		if (_reader.name() == QLatin1String("value")) {
-			if (i < track.size())
+			if (i < segment.size())
-				track[i++].setHeartRate(number());
+				segment[i++].setHeartRate(number());
 			else {
 				_reader.raiseError(error);
 				return;
@@ -345,19 +345,19 @@ void KMLParser::heartRate(TrackData &track, int start)
 			_reader.skipCurrentElement();
 	}
 
-	if (i != track.size())
+	if (i != segment.size())
 		_reader.raiseError(error);
 }
 
-void KMLParser::cadence(TrackData &track, int start)
+void KMLParser::cadence(SegmentData &segment, int start)
 {
 	int i = start;
 	const char error[] = "Cadence data count mismatch";
 
 	while (_reader.readNextStartElement()) {
 		if (_reader.name() == QLatin1String("value")) {
-			if (i < track.size())
+			if (i < segment.size())
-				track[i++].setCadence(number());
+				segment[i++].setCadence(number());
 			else {
 				_reader.raiseError(error);
 				return;
@@ -366,19 +366,19 @@ void KMLParser::cadence(TrackData &track, int start)
 			_reader.skipCurrentElement();
 	}
 
-	if (i != track.size())
+	if (i != segment.size())
 		_reader.raiseError(error);
 }
 
-void KMLParser::speed(TrackData &track, int start)
+void KMLParser::speed(SegmentData &segment, int start)
 {
 	int i = start;
 	const char error[] = "Speed data count mismatch";
 
 	while (_reader.readNextStartElement()) {
 		if (_reader.name() == QLatin1String("value")) {
-			if (i < track.size())
+			if (i < segment.size())
-				track[i++].setSpeed(number());
+				segment[i++].setSpeed(number());
 			else {
 				_reader.raiseError(error);
 				return;
@@ -387,19 +387,19 @@ void KMLParser::speed(TrackData &track, int start)
 			_reader.skipCurrentElement();
 	}
 
-	if (i != track.size())
+	if (i != segment.size())
 		_reader.raiseError(error);
 }
 
-void KMLParser::temperature(TrackData &track, int start)
+void KMLParser::temperature(SegmentData &segment, int start)
 {
 	int i = start;
 	const char error[] = "Temperature data count mismatch";
 
 	while (_reader.readNextStartElement()) {
 		if (_reader.name() == QLatin1String("value")) {
-			if (i < track.size())
+			if (i < segment.size())
-				track[i++].setTemperature(number());
+				segment[i++].setTemperature(number());
 			else {
 				_reader.raiseError(error);
 				return;
@@ -408,11 +408,11 @@ void KMLParser::temperature(TrackData &track, int start)
 			_reader.skipCurrentElement();
 	}
 
-	if (i != track.size())
+	if (i != segment.size())
 		_reader.raiseError(error);
 }
 
-void KMLParser::schemaData(TrackData &track, int start)
+void KMLParser::schemaData(SegmentData &segment, int start)
 {
 	while (_reader.readNextStartElement()) {
 		if (_reader.name() == QLatin1String("SimpleArrayData")) {
@@ -420,13 +420,13 @@ void KMLParser::schemaData(TrackData &track, int start)
 			QStringRef name = attr.value("name");
 
 			if (name == QLatin1String("Heartrate"))
-				heartRate(track, start);
+				heartRate(segment, start);
 			else if (name == QLatin1String("Cadence"))
-				cadence(track, start);
+				cadence(segment, start);
 			else if (name == QLatin1String("Speed"))
-				speed(track, start);
+				speed(segment, start);
 			else if (name == QLatin1String("Temperature"))
-				temperature(track, start);
+				temperature(segment, start);
 			else
 				_reader.skipCurrentElement();
 		} else
@@ -434,51 +434,52 @@ void KMLParser::schemaData(TrackData &track, int start)
 	}
 }
 
-void KMLParser::extendedData(TrackData &track, int start)
+void KMLParser::extendedData(SegmentData &segment, int start)
 {
 	while (_reader.readNextStartElement()) {
 		if (_reader.name() == QLatin1String("SchemaData"))
-			schemaData(track, start);
+			schemaData(segment, start);
 		else
 			_reader.skipCurrentElement();
 	}
 }
 
-void KMLParser::track(TrackData &track)
+void KMLParser::track(SegmentData &segment)
 {
 	const char error[] = "gx:coord/when element count mismatch";
-	int first = track.size();
+	int first = segment.size();
 	int i = first;
 
 	while (_reader.readNextStartElement()) {
 		if (_reader.name() == QLatin1String("when")) {
-			track.append(Trackpoint());
+			segment.append(Trackpoint());
-			track.last().setTimestamp(time());
+			segment.last().setTimestamp(time());
 		} else if (_reader.name() == QLatin1String("coord")) {
-			if (i == track.size()) {
+			if (i == segment.size()) {
 				_reader.raiseError(error);
 				return;
-			} else if (!coord(track[i])) {
+			} else if (!coord(segment[i])) {
 				_reader.raiseError("Invalid coordinates");
 				return;
 			}
 			i++;
 		} else if (_reader.name() == QLatin1String("ExtendedData"))
-			extendedData(track, first);
+			extendedData(segment, first);
 		else
 			_reader.skipCurrentElement();
 	}
 
-	if (i != track.size())
+	if (i != segment.size())
 		_reader.raiseError(error);
 }
 
 void KMLParser::multiTrack(TrackData &t)
 {
 	while (_reader.readNextStartElement()) {
-		if (_reader.name() == QLatin1String("Track"))
+		if (_reader.name() == QLatin1String("Track")) {
-			track(t);
+			t.append(SegmentData());
-		else
+			track(t.last());
+		} else
 			_reader.skipCurrentElement();
 	}
 }
@@ -498,9 +499,10 @@ void KMLParser::multiGeometry(QList<TrackData> &tracks, QList<Area> &areas,
 		} else if (_reader.name() == QLatin1String("LineString")) {
 			tracks.append(TrackData());
 			TrackData &t = tracks.last();
+			t.append(SegmentData());
 			t.setName(name);
 			t.setDescription(desc);
-			lineString(t);
+			lineString(t.last());
 		} else if (_reader.name() == QLatin1String("Polygon")) {
 			areas.append(Area());
 			Area &a = areas.last();
@@ -538,15 +540,17 @@ void KMLParser::placemark(QList<TrackData> &tracks, QList<Area> &areas,
 		  || _reader.name() == QLatin1String("LinearRing")) {
 			tracks.append(TrackData());
 			TrackData &t = tracks.last();
+			t.append(SegmentData());
 			t.setName(name);
 			t.setDescription(desc);
-			lineString(t);
+			lineString(t.last());
 		} else if (_reader.name() == QLatin1String("Track")) {
 			tracks.append(TrackData());
 			TrackData &t = tracks.last();
+			t.append(SegmentData());
 			t.setName(name);
 			t.setDescription(desc);
-			track(t);
+			track(t.last());
 		} else if (_reader.name() == QLatin1String("MultiTrack")) {
 			tracks.append(TrackData());
 			TrackData &t = tracks.last();

src/data/kmlparser.h

@@ -25,23 +25,23 @@ private:
 	void multiGeometry(QList<TrackData> &tracks, QList<Area> &areas,
 	  QVector<Waypoint> &waypoints, const QString &name, const QString &desc,
 	  const QDateTime timestamp);
-	void track(TrackData &track);
+	void track(SegmentData &segment);
 	void multiTrack(TrackData &t);
-	void lineString(TrackData &track);
+	void lineString(SegmentData &segment);
 	void linearRing(QVector<Coordinates> &coordinates);
 	void boundary(QVector<Coordinates> &coordinates);
 	void polygon(Area &area);
 	void point(Waypoint &waypoint);
 	bool pointCoordinates(Waypoint &waypoint);
-	bool lineCoordinates(TrackData &track);
+	bool lineCoordinates(SegmentData &segment);
 	bool polygonCoordinates(QVector<Coordinates> &points);
 	bool coord(Trackpoint &trackpoint);
-	void extendedData(TrackData &track, int start);
+	void extendedData(SegmentData &segment, int start);
-	void schemaData(TrackData &track, int start);
+	void schemaData(SegmentData &segment, int start);
-	void heartRate(TrackData &track, int start);
+	void heartRate(SegmentData &segment, int start);
-	void cadence(TrackData &track, int start);
+	void cadence(SegmentData &segment, int start);
-	void speed(TrackData &track, int start);
+	void speed(SegmentData &segment, int start);
-	void temperature(TrackData &track, int start);
+	void temperature(SegmentData &segment, int start);
 	QDateTime timeStamp();
 	qreal number();
 	QDateTime time();

src/data/nmeaparser.cpp

@@ -227,7 +227,7 @@ bool NMEAParser::readEW(const char *data, int len, qreal &lon)
 	return true;
 }
 
-bool NMEAParser::readRMC(TrackData &track, const char *line, int len)
+bool NMEAParser::readRMC(SegmentData &segment, const char *line, int len)
 {
 	int col = 1;
 	const char *vp = line;
@@ -280,8 +280,8 @@ bool NMEAParser::readRMC(TrackData &track, const char *line, int len)
 	}
 
 	if (!date.isNull()) {
-		if (_date.isNull() && !_time.isNull() && !track.isEmpty())
+		if (_date.isNull() && !_time.isNull() && !segment.isEmpty())
-			track.last().setTimestamp(QDateTime(date, _time, Qt::UTC));
+			segment.last().setTimestamp(QDateTime(date, _time, Qt::UTC));
 		_date = date;
 	}
 
@@ -290,13 +290,13 @@ bool NMEAParser::readRMC(TrackData &track, const char *line, int len)
 		Trackpoint t(c);
 		if (!_date.isNull() && !time.isNull())
 			t.setTimestamp(QDateTime(_date, time, Qt::UTC));
-		track.append(t);
+		segment.append(t);
 	}
 
 	return true;
 }
 
-bool NMEAParser::readGGA(TrackData &track, const char *line, int len)
+bool NMEAParser::readGGA(SegmentData &segment, const char *line, int len)
 {
 	int col = 1;
 	const char *vp = line;
@@ -364,7 +364,7 @@ bool NMEAParser::readGGA(TrackData &track, const char *line, int len)
 			t.setTimestamp(QDateTime(_date, _time, Qt::UTC));
 		if (!std::isnan(ele))
 			t.setElevation(ele - gh);
-		track.append(t);
+		segment.append(t);
 
 		_GGA = true;
 	}
@@ -485,6 +485,7 @@ bool NMEAParser::parse(QFile *file, QList<TrackData> &tracks,
 	Q_UNUSED(polygons);
 	qint64 len;
 	char line[80 + 2 + 1 + 1];
+	SegmentData segment;
 
 
 	_errorLine = 1;
@@ -493,9 +494,6 @@ bool NMEAParser::parse(QFile *file, QList<TrackData> &tracks,
 	_time = QTime();
 	_GGA = false;
 
-	tracks.append(TrackData());
-	TrackData &track = tracks.last();
-
 	while (!file->atEnd()) {
 		len = file->readLine(line, sizeof(line));
 
@@ -509,10 +507,10 @@ bool NMEAParser::parse(QFile *file, QList<TrackData> &tracks,
 
 		if (validSentence(line, len)) {
 			if (!memcmp(line + 3, "RMC,", 4)) {
-				if (!readRMC(track, line + 7, len - 7))
+				if (!readRMC(segment, line + 7, len - 7))
 					return false;
 			} else if (!memcmp(line + 3, "GGA,", 4)) {
-				if (!readGGA(track, line + 7, len - 7))
+				if (!readGGA(segment, line + 7, len - 7))
 					return false;
 			} else if (!memcmp(line + 3, "WPL,", 4)) {
 				if (!readWPL(waypoints, line + 7, len - 7))
@@ -526,10 +524,15 @@ bool NMEAParser::parse(QFile *file, QList<TrackData> &tracks,
 		_errorLine++;
 	}
 
-	if (!tracks.last().size() && !waypoints.size()) {
+	if (!segment.size() && !waypoints.size()) {
 		_errorString = "No usable NMEA sentence found";
 		return false;
 	}
 
+	if (segment.size()) {
+		tracks.append(TrackData());
+		tracks.last().append(segment);
+	}
+
 	return true;
 }

src/data/nmeaparser.h

@@ -25,8 +25,8 @@ private:
 	bool readAltitude(const char *data, int len, qreal &ele);
 	bool readGeoidHeight(const char *data, int len, qreal &gh);
 
-	bool readRMC(TrackData &track, const char *line, int len);
+	bool readRMC(SegmentData &segment, const char *line, int len);
-	bool readGGA(TrackData &track, const char *line, int len);
+	bool readGGA(SegmentData &segment, const char *line, int len);
 	bool readWPL(QVector<Waypoint> &waypoints, const char *line, int len);
 	bool readZDA(const char *line, int len);
 

src/data/oziparsers.cpp

@@ -41,6 +41,8 @@ bool PLTParser::parse(QFile *file, QList<TrackData> &tracks,
 
 	tracks.append(TrackData());
 	TrackData &track = tracks.last();
+	track.append(SegmentData());
+	SegmentData &segment = track.last();
 
 	while (!file->atEnd()) {
 		QByteArray line = file->readLine();
@@ -105,7 +107,8 @@ bool PLTParser::parse(QFile *file, QList<TrackData> &tracks,
 				}
 			}
 
-			track.append(tp);
+
+			segment.append(tp);
 		}
 
 		_errorLine++;

src/data/path.cpp

@@ -1,14 +1,27 @@
 #include "path.h"
 
+bool Path::isValid() const
+{
+	if (isEmpty())
+		return false;
+	for (int i = 0; i < size(); i++)
+		if (at(i).size() < 2)
+			return false;
+	return true;
+}
+
 RectC Path::boundingRect() const
 {
 	RectC ret;
 
-	if (size() < 2)
+	if (!isValid())
 		return ret;
 
-	for (int i = 0; i < size(); i++)
+	for (int i = 0; i < size(); i++) {
-		ret = ret.united(at(i).coordinates());
+		const PathSegment &segment = at(i);
+		for (int j = 0; j < segment.size(); j++)
+			ret = ret.united(segment.at(j).coordinates());
+	}
 
 	return ret;
 }

src/data/path.h

@@ -27,10 +27,12 @@ Q_DECLARE_TYPEINFO(PathPoint, Q_PRIMITIVE_TYPE);
 QDebug operator<<(QDebug dbg, const PathPoint &point);
 #endif // QT_NO_DEBUG
 
+typedef QVector<PathPoint> PathSegment;
 
-class Path : public QVector<PathPoint>
+class Path : public QList<PathSegment>
 {
 public:
+	bool isValid() const;
 	RectC boundingRect() const;
 };
 

src/data/poi.cpp

@@ -129,23 +129,28 @@ QList<Waypoint> POI::points(const Path &path) const
 	QSet<int>::const_iterator it;
 
 
-	for (int i = 1; i < path.count(); i++) {
+	for (int i = 0; i < path.count(); i++) {
-		double ds = path.at(i).distance() - path.at(i-1).distance();
+		const PathSegment &segment = path.at(i);
+
+		for (int j = 1; j < segment.size(); j++) {
+			double ds = segment.at(j).distance() - segment.at(j-1).distance();
 			unsigned n = (unsigned)ceil(ds / _radius);
 
 			if (n > 1) {
-			GreatCircle gc(path.at(i-1).coordinates(), path.at(i).coordinates());
+				GreatCircle gc(segment.at(j-1).coordinates(),
-			for (unsigned j = 0; j < n; j++) {
+				  segment.at(j).coordinates());
-				RectC br(gc.pointAt((double)j/n), _radius);
+				for (unsigned k = 0; k < n; k++) {
+					RectC br(gc.pointAt((double)k/n), _radius);
 					search(br, set);
 				}
 			} else {
-			RectC br(path.at(i-1).coordinates(), _radius);
+				RectC br(segment.at(j-1).coordinates(), _radius);
 				search(br, set);
 			}
 		}
+	}
 
-	RectC br(path.last().coordinates(), _radius);
+	RectC br(path.last().last().coordinates(), _radius);
 	search(br, set);
 
 

src/data/route.cpp

@@ -19,9 +19,11 @@ Route::Route(const RouteData &data) : _data(data)
 Path Route::path() const
 {
 	Path ret;
+	ret.append(PathSegment());
+	PathSegment &ps = ret.last();
 
 	for (int i = 0; i < _data.size(); i++)
-		ret.append(PathPoint(_data.at(i).coordinates(), _distance.at(i)));
+		ps.append(PathPoint(_data.at(i).coordinates(), _distance.at(i)));
 
 	return ret;
 }
@@ -29,17 +31,19 @@ Path Route::path() const
 Graph Route::elevation() const
 {
 	Graph graph;
+	graph.append(GraphSegment());
+	GraphSegment &gs = graph.last();
 
 	for (int i = 0; i < _data.size(); i++) {
 		if (_data.at(i).hasElevation() && !_useDEM)
-			graph.append(GraphPoint(_distance.at(i), NAN,
+			gs.append(GraphPoint(_distance.at(i), NAN,
 			  _data.at(i).elevation()));
 		else {
 			qreal elevation = DEM::elevation(_data.at(i).coordinates());
 			if (!std::isnan(elevation))
-				graph.append(GraphPoint(_distance.at(i), NAN, elevation));
+				gs.append(GraphPoint(_distance.at(i), NAN, elevation));
 			else if (_data.at(i).hasElevation())
-				graph.append(GraphPoint(_distance.at(i), NAN,
+				gs.append(GraphPoint(_distance.at(i), NAN,
 				  _data.at(i).elevation()));
 		}
 	}

src/data/slfparser.cpp

@@ -26,7 +26,7 @@ bool SLFParser::data(const QXmlStreamAttributes &attr, const char *name,
 	return res;
 }
 
-void SLFParser::entries(const QDateTime &date, TrackData &track)
+void SLFParser::entries(const QDateTime &date, SegmentData &segment)
 {
 	while (_reader.readNextStartElement()) {
 		if (_reader.name() == QLatin1String("Entry")) {
@@ -60,7 +60,7 @@ void SLFParser::entries(const QDateTime &date, TrackData &track)
 			if (data(attr, "trainingTimeAbsolute", val))
 				t.setTimestamp(date.addMSecs(val * 10));
 
-			track.append(t);
+			segment.append(t);
 		}
 
 		_reader.skipCurrentElement();
@@ -89,9 +89,10 @@ void SLFParser::activity(TrackData &track)
 	QDateTime date;
 
 	while (_reader.readNextStartElement()) {
-		if (_reader.name() == QLatin1String("Entries"))
+		if (_reader.name() == QLatin1String("Entries")) {
-			entries(date, track);
+			track.append(SegmentData());
-		else if (_reader.name() == QLatin1String("GeneralInformation"))
+			entries(date, track.last());
+		} else if (_reader.name() == QLatin1String("GeneralInformation"))
 			generalInformation(date, track);
 		else
 			_reader.skipCurrentElement();

src/data/slfparser.h

@@ -16,7 +16,7 @@ class SLFParser : public Parser
 private:
 	void generalInformation(QDateTime &date, TrackData &track);
 	void activity(TrackData &track);
-	void entries(const QDateTime &date, TrackData &track);
+	void entries(const QDateTime &date, SegmentData &segment);
 	bool data(const QXmlStreamAttributes &attr, const char *name, qreal &val);
 	void warning(const char *text) const;
 

src/data/tcxparser.cpp

@@ -116,14 +116,14 @@ void TCXParser::waypointData(Waypoint &waypoint)
 	}
 }
 
-void TCXParser::trackpoints(TrackData &track)
+void TCXParser::trackpoints(SegmentData &segment)
 {
 	while (_reader.readNextStartElement()) {
 		if (_reader.name() == QLatin1String("Trackpoint")) {
 			Trackpoint t;
 			trackpointData(t);
 			if (t.coordinates().isValid())
-				track.append(t);
+				segment.append(t);
 			else
 				warning("Missing Trackpoint coordinates");
 		} else
@@ -131,11 +131,11 @@ void TCXParser::trackpoints(TrackData &track)
 	}
 }
 
-void TCXParser::lap(TrackData &track)
+void TCXParser::lap(SegmentData &segment)
 {
 	while (_reader.readNextStartElement()) {
 		if (_reader.name() == QLatin1String("Track"))
-			trackpoints(track);
+			trackpoints(segment);
 		else
 			_reader.skipCurrentElement();
 	}
@@ -144,9 +144,10 @@ void TCXParser::lap(TrackData &track)
 void TCXParser::course(QVector<Waypoint> &waypoints, TrackData &track)
 {
 	while (_reader.readNextStartElement()) {
-		if (_reader.name() == QLatin1String("Track"))
+		if (_reader.name() == QLatin1String("Track")) {
-			trackpoints(track);
+			track.append(SegmentData());
-		else if (_reader.name() == QLatin1String("Name"))
+			trackpoints(track.last());
+		} else if (_reader.name() == QLatin1String("Name"))
 			track.setName(_reader.readElementText());
 		else if (_reader.name() == QLatin1String("Notes"))
 			track.setDescription(_reader.readElementText());
@@ -164,9 +165,11 @@ void TCXParser::course(QVector<Waypoint> &waypoints, TrackData &track)
 
 void TCXParser::activity(TrackData &track)
 {
+	track.append(SegmentData());
+
 	while (_reader.readNextStartElement()) {
 		if (_reader.name() == QLatin1String("Lap"))
-			lap(track);
+			lap(track.last());
 		else if (_reader.name() == QLatin1String("Notes"))
 			track.setDescription(_reader.readElementText());
 		else
@@ -190,7 +193,7 @@ void TCXParser::sport(QList<TrackData> &tracks)
 	while (_reader.readNextStartElement()) {
 		if (_reader.name() == QLatin1String("Activity")) {
 			tracks.append(TrackData());
-			activity(tracks.back());
+			activity(tracks.last());
 		} else
 			_reader.skipCurrentElement();
 	}
@@ -212,7 +215,7 @@ void TCXParser::activities(QList<TrackData> &tracks)
 	while (_reader.readNextStartElement()) {
 		if (_reader.name() == QLatin1String("Activity")) {
 			tracks.append(TrackData());
-			activity(tracks.back());
+			activity(tracks.last());
 		} else if (_reader.name() == QLatin1String("MultiSportSession"))
 			multiSportSession(tracks);
 		else

src/data/tcxparser.h

@@ -21,8 +21,8 @@ private:
 	void sport(QList<TrackData> &tracks);
 	void course(QVector<Waypoint> &waypoints, TrackData &track);
 	void activity(TrackData &track);
-	void lap(TrackData &track);
+	void lap(SegmentData &segment);
-	void trackpoints(TrackData &track);
+	void trackpoints(SegmentData &segment);
 	void trackpointData(Trackpoint &trackpoint);
 	void waypointData(Waypoint &waypoint);
 	void extensions(Trackpoint &trackpoint);

src/data/track.cpp

@@ -45,13 +45,13 @@ static QSet<int> eliminate(const QVector<qreal> &v)
 	return rm;
 }
 
-static Graph filter(const Graph &g, int window)
+static GraphSegment filter(const GraphSegment &g, int window)
 {
 	if (g.size() < window || window < 2)
-		return Graph(g);
+		return GraphSegment(g);
 
 	qreal acc = 0;
-	Graph ret(g.size());
+	GraphSegment ret(g.size());
 
 	for (int i = 0; i < window; i++)
 		acc += g.at(i).y();
@@ -70,239 +70,319 @@ static Graph filter(const Graph &g, int window)
 }
 
 
-Track::Track(const TrackData &data) : _data(data)
+Track::Track(const TrackData &data) : _data(data), _pause(0)
 {
-	QVector<qreal> acceleration;
 	qreal ds, dt;
 
-	_time.append(0);
+	for (int i = 0; i < _data.size(); i++) {
-	_distance.append(0);
+		const SegmentData &sd = _data.at(i);
-	_speed.append(0);
+		if (sd.isEmpty())
-	acceleration.append(0);
+			continue;
 
-	for (int i = 1; i < _data.count(); i++) {
+		// precompute distances, times, speeds and acceleration
-		ds = _data.at(i).coordinates().distanceTo(_data.at(i-1).coordinates());
+		QVector<qreal> acceleration;
-		_distance.append(_distance.at(i-1) + ds);
 
-		if (_data.first().hasTimestamp() && _data.at(i).hasTimestamp()
+		_segments.append(Segment());
-		  && _data.at(i).timestamp() >= _data.at(i-1).timestamp())
+		Segment &seg = _segments.last();
-			_time.append(_data.first().timestamp().msecsTo(
+
-			  _data.at(i).timestamp()) / 1000.0);
+		seg.distance.append(i ? _segments.at(i-1).distance.last() : 0);
+		seg.time.append(i ? _segments.at(i-1).time.last() :
+		  sd.first().hasTimestamp() ? 0 : NAN);
+		seg.speed.append(sd.first().hasTimestamp() ? 0 : NAN);
+		acceleration.append(sd.first().hasTimestamp() ? 0 : NAN);
+
+		for (int j = 1; j < sd.size(); j++) {
+			ds = sd.at(j).coordinates().distanceTo(
+			  sd.at(j-1).coordinates());
+			seg.distance.append(seg.distance.last() + ds);
+
+			if (sd.at(j).timestamp() >= sd.at(j-1).timestamp())
+				dt = sd.at(j-1).timestamp().msecsTo(
+				  sd.at(j).timestamp()) / 1000.0;
 			else
-			_time.append(NAN);
+				dt = NAN;
+			seg.time.append(seg.time.last() + dt);
 
-		dt = _time.at(i) - _time.at(i-1);
 			if (dt < 1e-3) {
-			_speed.append(_speed.at(i-1));
+				seg.speed.append(seg.speed.last());
-			acceleration.append(acceleration.at(i-1));
+				acceleration.append(acceleration.last());
 			} else {
-			_speed.append(ds / dt);
+				qreal v = ds / dt;
-			qreal dv = _speed.at(i) - _speed.at(i-1);
+				qreal dv = v - seg.speed.last();
+				seg.speed.append(v);
 				acceleration.append(dv / dt);
 			}
 		}
 
-	_pause = 0;
+		// get stop-points + pause duration
-	for (int i = 1; i < _data.count(); i++) {
+		for (int j = 1; j < seg.time.size(); j++) {
-		if (_time.at(i) > _time.at(i-1) + _pauseInterval
+			if (seg.time.at(j) > seg.time.at(j-1) + _pauseInterval
-		  && _speed.at(i) < _pauseSpeed) {
+			  && seg.speed.at(j) < _pauseSpeed) {
-			_pause += _time.at(i) - _time.at(i-1);
+				_pause += seg.time.at(j) - seg.time.at(j-1);
-			_stop.insert(i-1);
+				seg.stop.insert(j-1);
-			_stop.insert(i);
+				seg.stop.insert(j);
 			}
 		}
 
 		if (!_outlierEliminate)
-		return;
+			continue;
 
-	_outliers = eliminate(acceleration);
 
+		// eliminate outliers
+		seg.outliers = eliminate(acceleration);
+
+		// stop-points can not be outliers
 		QSet<int>::const_iterator it;
-	for (it = _stop.constBegin(); it != _stop.constEnd(); ++it)
+		for (it = seg.stop.constBegin(); it != seg.stop.constEnd(); ++it)
-		_outliers.remove(*it);
+			seg.outliers.remove(*it);
 
+		// recompute distances (and dependand data) without outliers
 		int last = 0;
-	for (int i = 0; i < _data.size(); i++) {
+		for (int j = 0; j < sd.size(); j++) {
-		if (_outliers.contains(i))
+			if (seg.outliers.contains(j))
 				last++;
 			else
 				break;
 		}
-	for (int i = last + 1; i < _data.size(); i++) {
+		for (int j = last + 1; j < sd.size(); j++) {
-		if (_outliers.contains(i))
+			if (seg.outliers.contains(i))
 				continue;
-		if (discardStopPoint(i)) {
+			if (discardStopPoint(seg, j)) {
-			_distance[i] = _distance.at(last);
+				seg.distance[j] = seg.distance.at(last);
-			_speed[i] = 0;
+				seg.speed[j] = 0;
 			} else {
-			ds = _data.at(i).coordinates().distanceTo(
+				ds = sd.at(j).coordinates().distanceTo(
-			  _data.at(last).coordinates());
+				  sd.at(last).coordinates());
-			_distance[i] = _distance.at(last) + ds;
+				seg.distance[j] = seg.distance.at(last) + ds;
 
-			dt = _time.at(i) - _time.at(last);
+				dt = seg.time.at(i) - seg.time.at(last);
-			_speed[i] = (dt < 1e-3) ? _speed.at(last) : ds / dt;
+				seg.speed[i] = (dt < 1e-3) ? seg.speed.at(last) : ds / dt;
+			}
+			last = j;
 		}
-		last = i;
 	}
 }
 
 Graph Track::elevation() const
 {
-	Graph raw;
+	Graph ret;
 
 	for (int i = 0; i < _data.size(); i++) {
-		if (_outliers.contains(i))
+		const SegmentData &sd = _data.at(i);
+		const Segment &seg = _segments.at(i);
+		GraphSegment gs;
+
+		for (int j = 0; j < sd.size(); j++) {
+			if (seg.outliers.contains(j))
 				continue;
 
-		if (_data.at(i).hasElevation() && !_useDEM)
+			if (sd.at(j).hasElevation() && !_useDEM)
-			raw.append(GraphPoint(_distance.at(i), _time.at(i),
+				gs.append(GraphPoint(seg.distance.at(j), seg.time.at(j),
-			  _data.at(i).elevation()));
+				  sd.at(j).elevation()));
 			else {
-			qreal elevation = DEM::elevation(_data.at(i).coordinates());
+				qreal elevation = DEM::elevation(sd.at(j).coordinates());
 				if (!std::isnan(elevation))
-				raw.append(GraphPoint(_distance.at(i), _time.at(i), elevation));
+					gs.append(GraphPoint(seg.distance.at(j), seg.time.at(j),
-			else if (_data.at(i).hasElevation())
+					  elevation));
-				raw.append(GraphPoint(_distance.at(i), _time.at(i),
+				else if (sd.at(j).hasElevation())
-				  _data.at(i).elevation()));
+					gs.append(GraphPoint(seg.distance.at(j), seg.time.at(j),
+					  sd.at(j).elevation()));
 			}
 		}
 
-	return filter(raw, _elevationWindow);
+		ret.append(filter(gs, _elevationWindow));
+	}
+
+	return ret;
 }
 
 Graph Track::speed() const
 {
-	Graph raw, filtered;
+	Graph ret;
-	qreal v;
-	QList<int> stop;
 
 	for (int i = 0; i < _data.size(); i++) {
-		if (_stop.contains(i) && (!std::isnan(_speed.at(i))
+		const SegmentData &sd = _data.at(i);
-		  || _data.at(i).hasSpeed())) {
+		const Segment &seg = _segments.at(i);
+		GraphSegment gs;
+		QList<int> stop;
+		qreal v;
+
+		for (int j = 0; j < sd.size(); j++) {
+			if (seg.stop.contains(j) && (!std::isnan(seg.speed.at(j))
+			  || sd.at(j).hasSpeed())) {
 				v = 0;
-			stop.append(raw.size());
+				stop.append(gs.size());
-		} else if (_useReportedSpeed && _data.at(i).hasSpeed()
+			} else if (_useReportedSpeed && sd.at(j).hasSpeed()
-		  && !_outliers.contains(i))
+			  && seg.outliers.contains(j))
-			v = _data.at(i).speed();
+				v = sd.at(j).speed();
-		else if (!std::isnan(_speed.at(i)) && !_outliers.contains(i))
+			else if (!std::isnan(seg.speed.at(j)) && !seg.outliers.contains(j))
-			v = _speed.at(i);
+				v = seg.speed.at(j);
 			else
 				continue;
 
-		raw.append(GraphPoint(_distance.at(i), _time.at(i), v));
+			gs.append(GraphPoint(seg.distance.at(j), seg.time.at(j), v));
 		}
 
-	filtered = filter(raw, _speedWindow);
+		ret.append(filter(gs, _speedWindow));
+		GraphSegment &filtered = ret.last();
 
-	for (int i = 0; i < stop.size(); i++)
+		for (int j = 0; j < stop.size(); j++)
-		filtered[stop.at(i)].setY(0);
+			filtered[stop.at(j)].setY(0);
+	}
 
-	return filtered;
+	return ret;
 }
 
 Graph Track::heartRate() const
 {
-	Graph raw;
+	Graph ret;
 
-	for (int i = 0; i < _data.count(); i++)
+	for (int i = 0; i < _data.size(); i++) {
-		if (_data.at(i).hasHeartRate() && !_outliers.contains(i))
+		const SegmentData &sd = _data.at(i);
-			raw.append(GraphPoint(_distance.at(i), _time.at(i),
+		const Segment &seg = _segments.at(i);
-			  _data.at(i).heartRate()));
+		GraphSegment gs;
 
-	return filter(raw, _heartRateWindow);
+		for (int j = 0; j < sd.size(); j++)
+			if (sd.at(j).hasHeartRate() && !seg.outliers.contains(j))
+				gs.append(GraphPoint(seg.distance.at(j), seg.time.at(j),
+				  sd.at(j).heartRate()));
+
+		ret.append(filter(gs, _heartRateWindow));
+	}
+
+	return ret;
 }
 
 Graph Track::temperature() const
 {
-	Graph raw;
+	Graph ret;
 
-	for (int i = 0; i < _data.size(); i++)
+	for (int i = 0; i < _data.size(); i++) {
-		if (_data.at(i).hasTemperature() && !_outliers.contains(i))
+		const SegmentData &sd = _data.at(i);
-			raw.append(GraphPoint(_distance.at(i), _time.at(i),
+		const Segment &seg = _segments.at(i);
-			  _data.at(i).temperature()));
+		GraphSegment gs;
 
-	return raw;
+		for (int j = 0; j < sd.count(); j++) {
+			if (sd.at(j).hasTemperature() && !seg.outliers.contains(j))
+				gs.append(GraphPoint(seg.distance.at(j), seg.time.at(j),
+				  sd.at(j).temperature()));
+		}
+
+		ret.append(gs);
+	}
+
+	return ret;
 }
 
 Graph Track::ratio() const
 {
-	Graph raw;
+	Graph ret;
 
-	for (int i = 0; i < _data.size(); i++)
+	for (int i = 0; i < _data.size(); i++) {
-		if (_data.at(i).hasRatio() && !_outliers.contains(i))
+		const SegmentData &sd = _data.at(i);
-			raw.append(GraphPoint(_distance.at(i), _time.at(i),
+		const Segment &seg = _segments.at(i);
-			  _data.at(i).ratio()));
+		GraphSegment gs;
 
-	return raw;
+		for (int j = 0; j < sd.size(); j++)
+			if (sd.at(j).hasRatio() && !seg.outliers.contains(j))
+				gs.append(GraphPoint(seg.distance.at(j), seg.time.at(j),
+				  sd.at(j).ratio()));
+
+		ret.append(gs);
+	}
+
+	return ret;
 }
 
 Graph Track::cadence() const
 {
-	Graph raw, filtered;
+	Graph ret;
+
+	for (int i = 0; i < _data.size(); i++) {
+		const SegmentData &sd = _data.at(i);
+		const Segment &seg = _segments.at(i);
+		GraphSegment gs;
 		QList<int> stop;
 		qreal c;
 
-	for (int i = 0; i < _data.size(); i++) {
+		for (int j = 0; j < sd.size(); j++) {
-		if (_data.at(i).hasCadence() && _stop.contains(i)) {
+			if (sd.at(j).hasCadence() && seg.stop.contains(j)) {
 				c = 0;
-			stop.append(raw.size());
+				stop.append(gs.size());
-		} else if (_data.at(i).hasCadence() && !_outliers.contains(i))
+			} else if (sd.at(j).hasCadence() && !seg.outliers.contains(j))
-			c = _data.at(i).cadence();
+				c = sd.at(j).cadence();
 			else
 				continue;
 
-		raw.append(GraphPoint(_distance.at(i), _time.at(i), c));
+			gs.append(GraphPoint(seg.distance.at(j), seg.time.at(j), c));
 		}
 
-	filtered = filter(raw, _cadenceWindow);
+		ret.append(filter(gs, _cadenceWindow));
+		GraphSegment &filtered = ret.last();
 
-	for (int i = 0; i < stop.size(); i++)
+		for (int j = 0; j < stop.size(); j++)
-		filtered[stop.at(i)].setY(0);
+			filtered[stop.at(j)].setY(0);
+	}
 
-	return filtered;
+	return ret;
 }
 
 Graph Track::power() const
 {
-	Graph raw, filtered;
+	Graph ret;
 	QList<int> stop;
 	qreal p;
 
+
 	for (int i = 0; i < _data.size(); i++) {
-		if (_data.at(i).hasPower() && _stop.contains(i)) {
+		const SegmentData &segment = _data.at(i);
+		const Segment &seg = _segments.at(i);
+		GraphSegment gs;
+
+		for (int j = 0; j < segment.size(); j++) {
+			if (segment.at(j).hasPower() && seg.stop.contains(j)) {
 				p = 0;
-			stop.append(raw.size());
+				stop.append(gs.size());
-		} else if (_data.at(i).hasPower() && !_outliers.contains(i))
+			} else if (segment.at(j).hasPower() && !seg.outliers.contains(j))
-			p = _data.at(i).power();
+				p = segment.at(j).power();
 			else
 				continue;
 
-		raw.append(GraphPoint(_distance.at(i), _time.at(i), p));
+			gs.append(GraphPoint(seg.distance.at(j), seg.time.at(j), p));
 		}
 
-	filtered = filter(raw, _powerWindow);
+		ret.append(filter(gs, _powerWindow));
+		GraphSegment &filtered = ret.last();
 
-	for (int i = 0; i < stop.size(); i++)
+		for (int j = 0; j < stop.size(); j++)
-		filtered[stop.at(i)].setY(0);
+			filtered[stop.at(j)].setY(0);
+	}
 
-	return filtered;
+	return ret;
 }
 
 qreal Track::distance() const
 {
-	for (int i = _distance.size() - 1; i >= 0; i--)
+	for (int i = _segments.size() - 1; i >= 0; i--) {
-		if (!_outliers.contains(i))
+		const Segment &seg = _segments.at(i);
-			return _distance.at(i);
+
+		for (int j = seg.distance.size() - 1; j >= 0; j--)
+			if (!seg.outliers.contains(j))
+				return seg.distance.at(j);
+	}
 
 	return 0;
 }
 
 qreal Track::time() const
 {
-	for (int i = _data.size() - 1; i >= 0; i--)
+	for (int i = _segments.size() - 1; i >= 0; i--) {
-		if (!_outliers.contains(i))
+		const Segment &seg = _segments.at(i);
-			return _data.first().timestamp().msecsTo(_data.at(i).timestamp())
+
-			  / 1000.0;
+		for (int j = seg.time.size() - 1; j >= 0; j--)
+			if (!seg.outliers.contains(j))
+				return seg.time.at(j);
+	}
 
 	return 0;
 }
@@ -314,22 +394,41 @@ qreal Track::movingTime() const
 
 QDateTime Track::date() const
 {
-	return (_data.size()) ? _data.first().timestamp() : QDateTime();
+	return (_data.size() && _data.first().size())
+	  ? _data.first().first().timestamp() : QDateTime();
 }
 
 Path Track::path() const
 {
 	Path ret;
 
-	for (int i = 0; i < _data.size(); i++)
+	for (int i = 0; i < _data.size(); i++) {
-		if (!_outliers.contains(i) && !discardStopPoint(i))
+		const SegmentData &sd = _data.at(i);
-			ret.append(PathPoint(_data.at(i).coordinates(), _distance.at(i)));
+		const Segment &seg = _segments.at(i);
+		ret.append(PathSegment());
+		PathSegment &ps = ret.last();
+
+		for (int j = 0; j < sd.size(); j++)
+			if (!seg.outliers.contains(j) && !discardStopPoint(seg, j))
+				ps.append(PathPoint(sd.at(j).coordinates(),
+				  seg.distance.at(j)));
+	}
 
 	return ret;
 }
 
-bool Track::discardStopPoint(int i) const
+bool Track::discardStopPoint(const Segment &seg, int i) const
 {
-	return (_stop.contains(i) && i > 0 && _stop.contains(i-1)
+	return (seg.stop.contains(i) && seg.stop.contains(i-1)
-	  && i < _data.size() - 1 && _stop.contains(i+1));
+	  && seg.stop.contains(i+1) && i > 0 && i < seg.distance.size() - 1);
+}
+
+bool Track::isValid() const
+{
+	if (_data.isEmpty())
+		return false;
+	for (int i = 0; i < _data.size(); i++)
+		if (_data.at(i).size() < 2)
+			return false;
+	return true;
 }

src/data/track.h

@@ -33,7 +33,7 @@ public:
 	const QString &name() const {return _data.name();}
 	const QString &description() const {return _data.description();}
 
-	bool isValid() const {return _data.size() >= 2;}
+	bool isValid() const;
 
 	static void setElevationFilter(int window) {_elevationWindow = window;}
 	static void setSpeedFilter(int window) {_speedWindow = window;}
@@ -48,17 +48,18 @@ public:
 	static void useDEM(bool use) {_useDEM = use;}
 
 private:
-	bool discardStopPoint(int i) const;
+	struct Segment {
+		QVector<qreal> distance;
+		QVector<qreal> time;
+		QVector<qreal> speed;
+		QSet<int> outliers;
+		QSet<int> stop;
+	};
+
+	bool discardStopPoint(const Segment &seg, int i) const;
 
 	TrackData _data;
-
+	QList<Segment> _segments;
-	QVector<qreal> _distance;
-	QVector<qreal> _time;
-	QVector<qreal> _speed;
-
-	QSet<int> _outliers;
-	QSet<int> _stop;
-
 	qreal _pause;
 
 	static bool _outlierEliminate;

src/data/trackdata.h

@@ -1,11 +1,14 @@
 #ifndef TRACKDATA_H
 #define TRACKDATA_H
 
+#include <QList>
 #include <QVector>
 #include <QString>
 #include "trackpoint.h"
 
-class TrackData : public QVector<Trackpoint>
+typedef QVector<Trackpoint> SegmentData;
+
+class TrackData : public QList<SegmentData>
 {
 public:
 	const QString& name() const {return _name;}