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180 lines
8.5 KiB
Markdown
180 lines
8.5 KiB
Markdown
<h1>Map Feature Plugin</h1>
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<h2>Introduction</h2>
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The Map Feature plugin displays a world map in 2D and 3D. It can display street maps, satellite imagery as well as custom map types.
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On top of this, it can plot data from other plugins, such as:
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* APRS symbols from the APRS Feature,
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* Aircraft from the ADS-B Demodulator,
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* Ships from the AIS Demodulator,
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* Satellites from the Satellite Tracker,
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* Weather imagery from APT Demodulator,
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* The Sun, Moon and Stars from the Star Tracker,
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* Beacons based on the IARU Region 1 beacon database and International Beacon Project,
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* Radio time transmitters,
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* GRAVES radar.
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It can also create tracks showing the path aircraft, ships and APRS objects have taken, as well as predicted paths for satellites.
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3D Models are not included with SDRangel. They must be downloaded by pressing the Download 3D Models button in the Display Settings dialog (11).
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<h2>Interface</h2>
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<h3>1: Find</h3>
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To centre the map on an object or location, enter:
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* An object name.
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* Latitude and longitude. This can be in decimal degrees (E.g: -23.666413, -46.573550) or degrees, minutes and seconds (E.g: 50°40'46.461"N 95°48'26.533"W or 33d51m54.5148sS 151d12m35.6400sE).
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* A Maidenhead locator (E.g: IO86av).
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* An address (E.g: St Katharine's & Wapping, London EC3N 4AB)
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<h3>2: Map Type</h3>
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Allows you to select a 2D map type. The available types will depend upon the Map provider
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selected under Display Settings (7).
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<h3>3: Maidenhead locator conversion</h3>
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When checked, opens the Maidenhead locator converter dialog, which allows conversion between addresses, latitude and longitude and Maidenhead locators.
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<h3>4: Display Beacon dialog</h3>
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When clicked, opens the Beacon dialog. Initially, no beacons will be listed. To download the IARU Region 1 beacon list, click the download button in the top right.
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The beacons will then be displayed in the table and on the map.
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* Double clicking in a cell in the beacon table in the Callsign or Location columns, will centre the map on that beacon.
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* Double clicking on the Frequency column will set the Device center frequency.
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<h3>5: Display IBP Beacon Project Dialog</h3>
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When clicked, opens the International Beacon Project dialog. The IBP consists of 18 HF beacons around the world,
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that each transmit once on each of the frequencies 14.100, 18.110, 21.150, 24.930 and 28.200MHz every 3 minutes, for 10 seconds.
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The IBP dialog shows which of the beacons should currently be transmitting.
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* Double clicking in a cell in the Callsign column will centre the map on that beacon.
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* Double clicking in a cell in the Frequency column will set the Device center frequency.
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More details of the IBP can be found at: https://www.ncdxf.org/beacon/beaconfaq.html
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<h3>6: Display Radio Time Transmitters dialog</h3>
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When clicked, opens the Radio Time Transmitters dialog.
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* Double clicking in a cell in the table in the Callsign or Location columns, will centre the map on that transmitter.
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* Double clicking on the Frequency column will set the Device center frequency.
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<h3>7: Display Names</h3>
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When checked, names of objects are displayed in a bubble next to each object.
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<h3>8: Display tracks for selected object</h3>
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When checked, displays the track (taken or predicted) for the selected object.
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<h3>9: Display tracks for all objects</h3>
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When checked, displays the track (taken or predicted) for the all objects.
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<h3>10: Delete</h3>
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When clicked, all items will be deleted from the map.
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<h3>11: Display settings</h3>
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When clicked, opens the Map Display Settings dialog:
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The top half of the dialog allows customization of how objects from different SDRangel
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plugins are dispayed on the 2D and 3D maps. This includes:
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* Whether images are displayed on the 2D map and whether 3D models are displayed on the 2D map.
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* Whether labels are displayed giving the name of the object.
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* Whether taken and predicted tracks are displayed and in which colour.
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* How the image or 3D model is scaled as the zoom level changes.
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For the 2D map, the settings include:
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* Whether the 2D map is displayed.
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* Which Map provider will be used to source the map images.
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* When OpenStreetMap is used as the provider, a custom map URL can be entered. For example, http://a.tile.openstreetmap.fr/hot/ or http://1.basemaps.cartocdn.com/light_nolabels/
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* When MapboxGL is used as the provider, custom styles can be specified.
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For the 3D map, the settings include:
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* The terrain provider, which provides elevation data. For a "flat" globe, terrain can be set to Ellipsoid for the WGS-84 ellipsoid.
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* The buildings provider, which provides 3D building models. This can be set to None if no buildings are desired.
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* Whether the globe and models are lit from the direction of the Sun or the camera.
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* The camera reference frame. For ECEF (Earth Centered Earth Fixed), the camera rotates with the globe.
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For ECI (Earth Centred Inertial) the camera is fixed in space and the globe will rotate under it.
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* API keys, required to access maps from different providers.
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Free API keys are available by signing up for an accounts with:
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* [Thunderforest](https://www.thunderforest.com/)
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* [Maptiler](https://www.maptiler.com/)
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* [Mapbox](https://www.mapbox.com/)
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* [Cesium ion](https://cesium.com/ion/signup)
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If API keys are not specified, a default key will be used, but this may not work if too many users use it.
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The "Download 3D Models" button will download the 3D models of aircraft, ships and satellites that are required for the 3D map.
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These are not included with the SDRangel distribution, so must be downloaded.
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<h3>Map</h3>
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The map feature displays a 2D and a 3D map overlaid with objects reported by other SDRangel channels and features, as well as beacon locations.
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* The "Home Station" antenna location is placed according to My Position set under the Preferences > My Position menu. The position is only updated when the Map plugin is first opened.
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* To pan around the map, click the left mouse button and drag. To zoom in or out, use the mouse scroll wheel.
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* Single clicking on an object in the map will display a text bubble with additional information about the object.
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* Right clicking on a object on the 2D map will open a context menu, which allows:
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* To set an object as the target. The target object will have its azimuth and elevation displayed in the text bubble and sent to the Rotator Controller feature.
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* Setting the Device center frequency to the first frequency found in the text bubble for the object.
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* Changing the order in which the objects are drawn, which can help to cycle through multiple objects that are at the same location on the map.
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* Setting the object as the tracking target on the 3D map.
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The 2D map will only display the last reported positions for objects.
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The 3D map, however, has a timeline that allows replaying how objects have moved over time.
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To the right of the timeline is the fullscreen toggle button, which allows the 3D map to be displayed fullscreen.
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<h2>Attribution</h2>
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IARU Region 1 beacon list used with permission from: https://iaru-r1-c5-beacons.org/ To add or update a beacon, see: https://iaru-r1-c5-beacons.org/index.php/beacon-update/
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Mapping and geolocation services are by Open Street Map: https://www.openstreetmap.org/ esri: https://www.esri.com/
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Mapbox: https://www.mapbox.com/ Cesium: https://www.cesium.com Bing: https://www.bing.com/maps/
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Icons made by Google from Flaticon https://www.flaticon.com
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3D models are by various artists under a variety of liceneses. See: https://github.com/srcejon/sdrangel-3d-models
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<h2>Creating 3D Models</h2>
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If you wish to contribute a 3D model, see the https://github.com/srcejon/sdrangel-3d-models project.
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<h2>API</h2>
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Full details of the API can be found in the Swagger documentation. Here is a quick example of how to centre the map on an object from the command line:
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curl -X POST "http://127.0.0.1:8091/sdrangel/featureset/0/feature/0/actions" -d '{"featureType": "Map", "MapActions": { "find": "M7RCE" }}'
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And to centre the map at a particular latitude and longitude:
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curl -X POST "http://127.0.0.1:8091/sdrangel/featureset/0/feature/0/actions" -d '{"featureType": "Map", "MapActions": { "find": "51.2 0.0" }}'
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