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532 lines
27 KiB
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<div id="header">
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<img src="css/images/gpxsee.png" alt="" class="logo"/><h1 class="logo"><a href="https://www.gpxsee.org">GPXSee</a></h1>
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<li><a href="index.html">Home</a></li>
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<div id="main">
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<div id="content">
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<h2 id="paths">Paths</h2>
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<p>Several aspects of GPXSee are controlled by data/configuration files
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stored in either global(system) or user directories. The global paths to
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those directories are as follows:</p>
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<table class="config-files">
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<tr>
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<td class="os">Windows:</td>
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<td class="file">C:\Program Files\GPXSee\</td>
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</tr><tr>
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<td class="os">Linux:</td>
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<td class="file">/usr/share/gpxsee/</td>
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</tr><tr>
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<td class="os">OS X:</td>
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<td class="file">/Applications/GPXSee.app/Contents/Resources/</td>
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</tr><tr>
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<td class="os">Android<sup><a href="#androidGlobalConfig">1</a></sup>:</td>
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<td class="file">assets://</td>
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</tr>
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</table>
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<p>User specific directories that - when present - override the global
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directory have the following paths:</p>
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<table class="config-files">
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<tr>
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<td class="os">Windows:</td>
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<td class="file">%APPDATA%\GPXSee\</td>
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</tr><tr>
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<td class="os">Linux:</td>
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<td class="file">~/.local/share/gpxsee/</td>
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</tr><tr>
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<td class="os">OS X:</td>
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<td class="file">~/Library/Application Support/GPXSee/</td>
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</tr><tr>
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<td class="os">Android:</td>
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<td class="file">/storage/emulated/0/Android/data/org.gpxsee.gpxsee/files/</td>
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</tr>
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</table>
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<p>The expanded user specific paths, including the actual configuration
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directories, are also accesible from the GPXSee "Help" menu.</p>
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<h2 id="data">Data files</h2>
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<p>GPXSee opens GPX, TCX, FIT, KML, NMEA, IGC, CUP, SIGMA SLF, Suunto SML,
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LOC, GeoJSON, OziExplorer (PLT, RTE, WPT), Garmin GPI,
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<a href="http://www.poi-factory.com/garmin-csv-file-format">Garmin CSV</a>,
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TomTom OV2 & ITN, ONmove OMD/GHP, TwoNav (TRK, RTE, WPT), GPSDump WPT
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and geotagged JPEG files, however not all format features are supported
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for all formats. Generally, GPXSee supports four kinds of data objects:</p>
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<ul>
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<li>Tracks</li>
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<li>Routes</li>
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<li>Waypoints</li>
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<li>Areas (polygons)</li>
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</ul>
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<p>Naturally, if a format supports only a subset of the objects, GPXSee also
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supports only this subset. Some formats - especially KML - have support for
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other data objects like 3D structures. Those are not supported by GPXSee.</p>
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<p>In addition to GPS data, data from the following sensors is supported
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by GPXSee:</p>
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<ul>
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<li>Heart rate</li>
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<li>Cadence</li>
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<li>Power</li>
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<li>Temperature</li>
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<li>Gear ratio/shifts (Shimano Di2, SRAM eTap)</li>
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</ul>
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<h3 id="filtering">Data filtering</h3>
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<p>Outlier elimination and data smoothing is implemented and enabled by default.
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In most cases this improves the representation of the recorded data but in some
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special cases you may get much worse results than without it. A typical example
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of such data are ski mountaineering tracks or in general tracks that are composed
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of parts with very different speed profiles.</p>
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<p>If you get unexpected results, try to disable the outlier elimination in
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the preferences.</p>
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<h3 id="symbols">Waypoint symbols</h3>
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<p>Waypoints that have a symbol name (GPX <code><sym></code> tag) defined
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can be shown with an icon corresponding to the name. The icons are searched
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in the global/user <code>symbols</code> directory and the icon is selected when
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the image basename (without extension) matches the symbol name.</p>
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<h2 id="maps">Maps</h2>
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<p>Two kinds of maps are supported by GPXSee - online maps and offline maps.
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You may either load them "ad hoc" from the GUI or they can be loaded
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automatically at program startup from the <code>maps</code> directory. The map
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directory is recursively searched when loading the maps, so it may contain an
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arbitrary directory structure (which will be preserved in the map menu).</p>
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<p>Supported map projections are Mercator (including Web Mercator),
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Transverse Mercator (including UTM), Lambert Conformal Conic, Albers Equal Area,
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Lambert Azimuthal Equal Area, Polar Stereographic, Oblique Stereographic, Křovák's,
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Polyconic, and Latitude/Longitude (2D geographic). Additionally, the Swiss
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and Hungarian Oblique Mercator projections are supported using LCC1 approximation.
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For list of supported datums and projected coordinate systems see the
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<a href="https://github.com/tumic0/GPXSee/blob/master/data/CRS/gcs.csv">GCS.csv</a>
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and <a href="https://github.com/tumic0/GPXSee/blob/master/data/CRS/pcs.csv">PCS.csv</a>
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configuration files (can be modified or overridden by user files like the map
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directory).</p>
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<h3 id="online">Online maps</h3>
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<p>Online maps are represented by map source definition XML files. For the formal
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map source file syntax see the <a href="map/1.5/map.xsd">map source
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XSD file</a>. The paragraphs below are a "human-readable" summary of the XSD
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syntax/semantics divided by map type.</p>
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<h4 id="OSM">OSM/Google tiles</h4>
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<p>The root <i>map</i> element contains two mandatory elements - <i>name</i>
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and <i>url</i>, and two optional elements - <i>zoom</i> and <i>bounds</i>.
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The tile X and Y coordinates are replaced with <code>$x</code> and
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<code>$y</code> in the URL and the zoom level is replaced with
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<code>$z</code>. An example map source definition file can look like:</p>
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<pre>
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<?xml version="1.0" encoding="UTF-8"?>
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<map xmlns="http://www.gpxsee.org/map/1.5" type="OSM">
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<name>USGS Imagery</name>
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<url>https://navigator.er.usgs.gov/tiles/aerial_Imagery.cgi/$z/$x/$y</url>
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<zoom min="2" max="15"/>
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<bounds bottom="0" top="74"/>
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</map>
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</pre>
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<p>The bounds are WGS84 latitude/longitude values in degrees. If omitted, the
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default zoom range is <0, 19> and the default bounds are
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<-85.0511, 85.0511> and <-180, 180>.</p>
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<p>GPXSee supports HiDPI map tiles. To specify that a map uses HiDPI tiles
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use the pixelRatio attribute of the <i>tile</i> tag. For the most common
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512x512px tiles (that shall be rendered as 256x256px tiles), set the value
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to 2.</p>
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<pre>
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<?xml version="1.0" encoding="UTF-8"?>
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<map xmlns="http://www.gpxsee.org/map/1.5">
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<name>OSM - HiDPI</name>
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<url>https://a.osm.rrze.fau.de/osmhd/$z/$x/$y.png</url>
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<tile pixelRatio="2"/>
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</map>
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</pre>
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<p>In case of vector tile images (MVT<sup><a href="#pbf">2</a></sup>),
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set the type attribute of the <i>tile</i> tag to "vector". This will
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adjust the pixel ratio of the tile to the pixel ratio of the display
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device.</p>
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<pre>
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<?xml version="1.0" encoding="UTF-8"?>
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<map xmlns="http://www.gpxsee.org/map/1.5">
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<name>MapTiler</name>
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<url>https://maps.tilehosting.com/data/v3/$z/$x/$y.pbf?key=apikey</url>
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<tile type="vector" size="512"/>
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<zoom max="14"/>
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</map>
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</pre>
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<p>The map URL can be also a local file URL (<i>file:</i> scheme).</p>
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<h4 id="TMS">TMS</h4>
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<p>TMS maps with the global-mercator profile are supported by GPXSee in addition
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to the OSM/Google tiles maps. The configuration is exactly the same as in the case
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of OSM maps, the only difference is that TMS maps must have the <i>map</i>
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<i>type</i> attribute set to <code>TMS</code>.</p>
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<h4 id="QuadTiles">QuadTiles</h4>
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<p>QuadTiles (BING) maps - another variation of the OSM/Google tiles maps - are also
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supported by GPXSee. Use <code>QuadTiles</code> as the <i>map</i> <i>type</i>
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attribute and <code>$quadkey</code> as the quadkey placeholder in the URL.</p>
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<h4 id="WMTS">WMTS</h4>
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<p>WMTS maps are distinguished by setting the <i>type</i> attribute of the
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<i>map</i> element to <code>WMTS</code>. Both the KVP and REST access methods
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are supported.</p>
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<p>For KVP, the <i>url</i> element represents the WMTS base URL and two
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additional elements are required - <i>layer</i> and <i>set</i>
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(TileMatrixSet in WMTS). Optional <i>format</i> and <i>style</i> elements may
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be specified defining the desired image format and layer style. If not set,
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<code>image/png</code> is used for <i>format</i> and the default style for
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<i>style</i>.</p>
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<pre>
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<?xml version="1.0" encoding="UTF-8"?>
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<map xmlns="http://www.gpxsee.org/map/1.5" type="WMTS">
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<name>CUZK</name>
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<url>http://geoportal.cuzk.cz/WMTS_ZM_900913/WMTService.aspx</url>
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<layer>zm</layer>
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<set axis="yx">ogc:1.0:globalcrs84pixel</set>
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</map>
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</pre>
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<p>For REST access, the <i>url</i> element's <i>type</i> attribute must be set
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to <code>REST</code>. The URL then represents the URL of the capabilities XML
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document. Defining the format has no relevance for the REST access method.</p>
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<pre>
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<?xml version="1.0" encoding="UTF-8"?>
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<map xmlns="http://www.gpxsee.org/map/1.5" type="WMTS">
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<name>Wien - Ortho</name>
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<url type="REST">http://maps1.wien.gv.at/wmts/1.0.0/WMTSCapabilities.xml</url>
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<layer>lb</layer>
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<style>farbe</style>
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<set>google3857</set>
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</map>
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</pre>
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<p>There is one more important attribute - the <i>axis</i> attribute of the
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<i>set</i> element. It specifies the axis order of the CRS used for the
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tile matrix set. The default order is obtained from the CRS definition like
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specified in the standard, but in praxis many servers use a wrong order. This
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is why GPXSee enables overriding the default axis order using the <i>axis</i>
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attribute. Possible values are <code>xy</code> and <code>yx</code>.</p>
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<p>Finally, one can define additional dimensions like <code>Time</code> using
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the <i>dimension</i> element. Use a separate entry for every additional dimension.</p>
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<p>HiDPI WMTS tiles are supported too. Local (<i>file:</i> scheme) URLs are
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supported in the map definition file as well as in the WMTS capabilities file.
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This enables a fully local REST WMTS map configuration without the need of a web
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server.</p>
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<h4 id="WMS">WMS</h4>
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<p>WMS maps are distinguished by setting the <i>type</i> attribute of the
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<i>map</i> element to <code>WMS</code>. WMS map definitions are very similar to
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WMTS map definitions, the main difference is that you must specify the map
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CRS using the <i>crs</i> element instead of specifying the tile set. Like in the
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case of the <i>set</i> element, you may specify the <i>axis</i> attribute to
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override the default axis order.</p>
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<p>It is possible to combine multiple WMS layers together in one map. To do so,
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use a comma separated list of WMS layers as the <i>layer</i> element content and
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a corresponding comma separated list as the <i>style</i> element content (can be
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omitted if all styles are the default style).</p>
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<pre>
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<?xml version="1.0" encoding="UTF-8"?>
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<map xmlns="http://www.gpxsee.org/map/1.5" type="WMS">
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<name>Katastr nemovitostí</name>
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<url>http://services.cuzk.cz/wms/wms.asp</url>
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<layer>polygony_parcel,polygony_budov,polygony_k_u</layer>
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<crs axis="yx">EPSG:3034</crs>
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</map>
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</pre>
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<h4 id="headers">Server access</h4>
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<p>If the map server requires HTTP authentication, you can use the <i>authorization</i>
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element to specify HTTP basic authorization credentials:</p>
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<pre>
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...
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<authorization username="joe" password="123456"/>
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</pre>
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<p>Since version 13.3 you may also specify additional HTTP request headers using
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the <i>header</i> element:</p>
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<pre>
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...
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<header name="Referer">https://referer.limited/</header>
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<header name="User-Agent">Mozilla/5.0 (GNU Hurd)</header>
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</pre>
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<h3 id="offline">Offline maps</h3>
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<p>OziExplorer maps, TrekBuddy maps/atlases, Garmin JNX & IMG/GMAP maps,
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TwoNav RMaps, MBTiles, KMZ maps, AlpineQuest AQM maps, Locus/OsmAnd/RMaps SQLite
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maps, Mapsforge maps, BSB charts, ENC charts, QCT maps, GEMF maps,
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Osmdroid SQLite maps, Orux maps and GeoTIFF and World-File georeferenced images
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are supported by GPXSee.</p>
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<p>You may easily create offline atlases from online map services by using
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<a href="http://mobac.sourceforge.net/">Mobile Atlas Creator (MOBAC)</a>.</p>
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<h4 id="IMG">IMG maps</h4>
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<p>There is support for IMG maps overlay in GPXSee since version 7.30. If the map
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name is <i>mapname.img</i> and there is also a file named <i>mapname.img.1</i>
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(.2, .3, ... for additional layers) in the same path, than it will be automatically
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loaded as an overlay of <i>mapname.img</i>.</p>
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<h4 id="JNXKML">JNX & KMZ maps</h4>
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<p>JNX & KMZ maps do not contain any info about the projection of their
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tile images, so it has to be provided externaly<sup><a href="#garmin">3</a></sup>.
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Generally, only two projections are used for JNX/KMZ maps - EPSG:4326 and
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EPSG:3857. If you see <a href="img/wrong_proj.png">background color stripes</a>
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in your JNX/KMZ map, you have to switch to the propper input projection
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in the preferences.</p>
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<h4 id="worldfiles">World Files</h4>
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<p>World-File georeferenced images require the projection info to be provided
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additionaly to the world file. This can be done either using a separete PRJ
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file in <a href="https://portal.ogc.org/files/?artifact_id=999">WKT1 format</a>
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or by selecting the input projection in the preferences. If a PRJ file
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exists, it takes precedence.</p>
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<p>Note, that the WKT datum entry must contain at least one of the
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<code>TOWGS84</code> or <code>AUTHORITY</code> keys to provide a valid projection
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info (the <code>AUTHORITY</code> info overrides any parameter values). The
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WKT data must follow the OGC naming convention. Generally, the OGC WKT entries
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from <a href="https://epsg.io/">epsg.io</a> should work.</p>
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<h3 id="styles">Map styles</h3>
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<p>MVT(PBF), Mapsforge and Garmin IMG maps can be styled with user defined styles.
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To apply a user defined style, place it to the <code>style</code> directory in
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one of the configuration paths. The style must be named <i>style.typ</i> (Garmin
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IMG), <i>style.xml</i> (Mapsforge) or <i>style.json</i> (MVT) for GPXSee to use it.
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If a Garmin IMG map contains a TYP file, it takes precedence over the user TYP
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file.</p>
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<h2 id="poi">POI files</h2>
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<p>All of the supported formats with waypoints capability - GPX, KML, TCX, NMEA,
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CUP, WPT, LOC, GeoJSON and Garmin GPI & CSV - can be loaded either as data
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files or as POI files. When a file is opened as a POI file, only waypoints reasonable
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near the tracks/waypoints of the loaded data files are displayed.</p>
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<p>To make GPXSee load a POI file automatically on startup, add the file to the
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<code>POI</code> directory in one of the configuration paths.</p>
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<h2 id="dem">DEM files</h2>
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<p>Digital Elevation Model (DEM) files can be used as elevation source
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instead of the recorded GPS data. The format of the DEM data is the SRTM HGT
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file format (SRTM3, SRTM1 and SRTM0.5). The DEM files must be put in
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the <code>DEM</code> directory in one of the configuration paths for GPXSee
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to use them.</p>
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<p>The DEM files must have the expected filename format of <code>NXXEYYY.hgt</code>
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or <code>NXXEYYY.hgt.zip</code> for GPXSee to use them.</p>
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<h3 id="dem_downloads">DEM downloads</h3>
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<p>Since GPXSee 9.6 you can download the required DEM files for the area covered
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by the loaded data from the GPXSee GUI. The URL is specified as a template where
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the NYY/SYY and EXXX/WXXX coordinates strings are replaced by
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<code>$lat</code> and <code>$lon</code>:</p>
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<pre>https://bailu.ch/dem3/$lat/$lat$lon.hgt.zip</pre>
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<p>The downloaded files are automatically renamed, if the file name is not in
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the required format.</p>
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<p>Since version 10.2, there is a default DEM tiles download source hosted
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by the GPXSee project predefined in the preferences. The data is the
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<a href="http://viewfinderpanoramas.org/dem3.html">DEM3 data</a> originaly
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provided by Jonathan de Ferranti and repacked by the
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<a href="https://bailu.ch/aat/">AAT</a> project.</p>
|
|
|
|
|
|
<h2 id="positioning">Positioning</h2>
|
|
<p>Since version 10.0, GPXSee is able to show the real-time GPS position
|
|
using the Qt positioning API. To make it work, you have to select and setup
|
|
the positioning plugin used in the program preferences. See the Qt Positioning Plugins
|
|
<a href="https://doc.qt.io/qt-5/qtpositioning-plugins.html">documentation</a>
|
|
for more info.</p>
|
|
|
|
<h3 id="positioning_winmac">Windows & OS X</h3>
|
|
<p>If your device/OS supports the platform positioning API (Core Location
|
|
/ Windows.Devices.Geolocation) you may try that first. If you have an external
|
|
USB/serial GPS device connected, you can use the <code>serialnmea</code> plugin.
|
|
In such case you have to provide the serial port id/device in the plugin
|
|
parameters. Use something like <code>COM3</code> on Windows and
|
|
<code>/dev/tty.SerialPort-3</code> on Mac.</p>
|
|
|
|
<h3 id="positioning_linux">Linux</h3>
|
|
<p>On Linux, you can use Geoclue2 as the platform plugin, but Geoclue is "Gnome
|
|
quality" software at its best and you will most probably not
|
|
<a href="https://github.com/OpenOrienteering/mapper/issues/1569#issuecomment-611442924">make
|
|
it work</a>.</p>
|
|
|
|
<p>Theoretically, you can also use the <code>serialnmea</code> plugin like on Windows/Mac,
|
|
but practically
|
|
<a href="https://bugzilla.opensuse.org/show_bug.cgi?id=1193604">almost</a>
|
|
<a href="https://bugzilla.redhat.com/show_bug.cgi?id=2030899">all</a> distributions
|
|
fail to build the plugin... The only exception are distributions using Qt6 like
|
|
ArchLinux. The <a href="https://doc-snapshots.qt.io/qt6-dev/position-plugin-nmea.html">NMEA
|
|
plugin</a> has been completely reworked in Qt6, is much more powerfull than in Qt5 and
|
|
is compiled by default.</p>
|
|
|
|
|
|
<h2 id="issues">Known issues</h2>
|
|
|
|
<h3>Android file system</h3>
|
|
<p>Due to the limited file system access on Android, all map formats that consist of
|
|
multiple files (eg. OziExplorer maps or World-file georeferenced images) will not load
|
|
properly when loaded from the application menu. You have to put such maps
|
|
to the GPXSee map directory to make them work. The same applies to all SQLite-based
|
|
map formats because of a Qt bug/limitation.</p>
|
|
|
|
<p>Even though all other maps will load from the application menu, <b>it is strongly
|
|
recommended for all offline maps to be moved to the GPXSee map directory</b> as the file
|
|
access on Android is two orders of magnitude (100x) slower when the file is opened from
|
|
the file open dialogue than if it is opened from the application folder! Especially IMG
|
|
maps on new Android versions (>=11) are almost unusable when opened from the application
|
|
menu.</p>
|
|
|
|
<h3>OpenGL</h3>
|
|
<p>There are numerous OpenGL issues in Qt that cause some kind of broken rendering
|
|
or even an application crash. OpenGL is thus disabled by default even if it can
|
|
significantly speed up rendering of big data sets. You may enable OpenGL in
|
|
the preferences, but be prepared that "strange things" may happen...</p>
|
|
|
|
<h3>Qt6</h3>
|
|
<p>Many Linux distributions compile GPXSee using Qt6, but Qt6 has serious rendering issues
|
|
that affect GPXSee. See the following Qt bugs list for details.</p>
|
|
|
|
<h3>Qt bugs</h3>
|
|
<p>This is the list of the most severe Qt bugs that affect GPXSee (some of them are
|
|
platform/Qt version specific):</p>
|
|
<ul>
|
|
<li><a href="https://bugreports.qt.io/browse/QTBUG-123126">QTBUG-123126</a>
|
|
- QGraphicsView content is blured when fractional scaling and OpenGL is used</li>
|
|
<li><a href="https://bugreports.qt.io/browse/QTBUG-111499">QTBUG-111499</a>
|
|
- Multiple QPainter::drawImage() calls are broken when OpenGL is used</li>
|
|
<li><a href="https://bugreports.qt.io/browse/QTBUG-120498">QTBUG-120498</a>
|
|
- QOpenGLWidget as QGraphicsView viewport crashes Qt on Android</li>
|
|
<li><a href="https://bugreports.qt.io/browse/QTBUG-126848">QTBUG-126848</a>
|
|
- QMenu on Android is completely broken in Qt 6.7.2</li>
|
|
<li><a href="https://bugreports.qt.io/browse/QTBUG-120455">QTBUG-120455</a>
|
|
- QPainter coordinates rounding broken when HiDPI scaling is used</li>
|
|
<li><a href="https://bugreports.qt.io/browse/QTBUG-96467">QTBUG-96467</a>
|
|
- QFontMetrics unusable in multithreaded applications</li>
|
|
<li><a href="https://bugreports.qt.io/browse/QTBUG-123125">QTBUG-123125</a>
|
|
- QMainWindow::devicePixelRatioF() reports wrong ratio on Wayland</li>
|
|
<li><a href="https://bugreports.qt.io/browse/QTBUG-121460">QTBUG-121460</a>
|
|
- Broken opening of files with content:// Uri filenames</li>
|
|
<li><a href="https://bugreports.qt.io/browse/QTBUG-110878">QTBUG-110878</a>
|
|
- Fullscreen windows rendered behind navigation bar</li>
|
|
<li><a href="https://bugreports.qt.io/browse/QTBUG-81791">QTBUG-81791</a>
|
|
- QToolbar rendering broken</li>
|
|
</ul>
|
|
|
|
|
|
<div id="footnote">
|
|
<p id="androidGlobalConfig"><i>[1] The Android global configuration is part of the APK
|
|
and is not accessible on an unrooted phone.</i></p>
|
|
<p id="pbf"><i>[2] To display PBF(MVT) tiles, <a href="https://github.com/tumic0/QtPBFImagePlugin">
|
|
QtPBFImagePlugin</a> is required (included in the Windows and OS X builds).</i></p>
|
|
<p id="garmin"><i>[3] Some tools like Garmin software "solve" this by
|
|
rescaling the images, but this introduces a small, but still visible distortion
|
|
to the map.</i></p>
|
|
</div>
|
|
|
|
</div>
|
|
|
|
<div id="sidebar">
|
|
<div id="outline">
|
|
<div class="h4l"><a href="#paths">Paths</a></div>
|
|
<div class="h4l"><a href="#data">Data files</a></div>
|
|
<div class="h5l"><a href="#filtering">Data filtering</a></div>
|
|
<div class="h5l"><a href="#symbols">Waypoint symbols</a></div>
|
|
<div class="h4l"><a href="#maps">Maps</a></div>
|
|
<div class="h5l"><a href="#online">Online maps</a></div>
|
|
<div class="h6l"><a href="#OSM">OSM/Google tiles</a></div>
|
|
<div class="h6l"><a href="#TMS">TMS</a></div>
|
|
<div class="h6l"><a href="#QuadTiles">QuadTiles</a></div>
|
|
<div class="h6l"><a href="#WMTS">WMTS</a></div>
|
|
<div class="h6l"><a href="#WMS">WMS</a></div>
|
|
<div class="h6l"><a href="#headers">Server access</a></div>
|
|
<div class="h5l"><a href="#offline">Offline maps</a></div>
|
|
<div class="h6l"><a href="#IMG">IMG maps</a></div>
|
|
<div class="h6l"><a href="#JNXKML">JNX & KMZ maps</a></div>
|
|
<div class="h6l"><a href="#worldfiles">World Files</a></div>
|
|
<div class="h5l"><a href="#styles">Map styles</a></div>
|
|
<div class="h4l"><a href="#poi">POI files</a></div>
|
|
<div class="h4l"><a href="#dem">DEM files</a></div>
|
|
<div class="h5l"><a href="#dem_downloads">DEM downloads</a></div>
|
|
<div class="h4l"><a href="#positioning">Positioning</a></div>
|
|
<div class="h5l"><a href="#positioning_winmac">Windows & OS X</a></div>
|
|
<div class="h5l"><a href="#positioning_linux">Linux</a></div>
|
|
<div class="h4l"><a href="#issues">Known issues</a></div>
|
|
</div>
|
|
</div>
|
|
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<p class="lf">© 2017-2024 Martin Tůma, CC BY-ND 4.0</p>
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