sdrangel/plugins/feature/map

Map Feature Plugin

Introduction

The Map Feature plugin displays a world map. It can display street maps, satellite imagery as well as custom map types. On top of this, it can plot data from other plugins, such as:

• APRS symbols from the APRS Feature,
• Aircraft from the ADS-B Demodulator,
• Satellites from the Satellite Tracker,
• The Sun, Moon and Stars from the Star Tracker,
• Beacons based on the IARU Region 1 beacon database.

It can also create tracks showing the path aircraft and APRS objects have taken, as well as predicted paths for satellites.

Interface

1: Find

To centre the map on an object or location, enter:

• An object name.
• 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).
• A Maidenhead locator (E.g: IO86av).
• An address (E.g: St Katharine's & Wapping, London EC3N 4AB)

2: Map Type

Allows you to select a map type. The available types will depend upon the Map provider selected under Display Settings (7).

3: Maidenhead locator conversion

When checked, opens the Maidenhead locator converter dialog, which allows conversion between addresses, latitude and longitude and Maidenhead locators.

4: Display Beacon dialog

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. The beacons will then be displayed in the table and on the map.

• Double clicking in a cell in the beacon table in the Callsign or Location columns, will centre the map on that beacon.
• Double clicking on the Frequency column will set the Device center frequency.

5: Display Names

When checked, names of objects are displayed in a bubble next to each object.

6: Display tracks for selected object

When checked, displays the track (taken or predicted) for the selected object.

7: Display tracks for all objects

When checked, displays the track (taken or predicted) for the all objects.

8: Delete

When clicked, all items will be deleted from the map.

9: Display settings

When clicked, opens the Map Display Settings dialog, which allows setting:

• Which data the Map will display.
• The colour of the taken and predicted tracks.
• Which Map provider will be used to source the map image.

In order to display Mapbox maps, you will need to enter an API Key. A key can be obtained by registering at: http://www.mapbox.com/ Note that it is not currently possible to support entering an API Key for Open Street Maps, in order to remove the watermarks.

Map

The map displays objects reported by other SDRangel channels and features, as well as beacon locations.

• The "Home" 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.
• To pan around the map, click the left mouse button and drag. To zoom in or out, use the mouse scroll wheel.
• Single clicking on an object in the map will display a text bubble with additional information about the object.
• Right clicking on a object will open a context menu, which allows:
  • 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.
  • Setting the Device center frequency to the first frequency found in the text bubble for the object.
  • 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.

Attribution

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/

Mapping and geolocation services are by Open Street Map: https://www.openstreetmap.org/ esri: https://www.esri.com/ and Mapbox: https://www.mapbox.com/

API

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:

curl -X POST "http://127.0.0.1:8091/sdrangel/featureset/0/feature/0/actions" -d '{"featureType": "Map",  "MapActions": { "find": "M7RCE" }}'

And to centre the map at a particular latitude and longitude:

curl -X POST "http://127.0.0.1:8091/sdrangel/featureset/0/feature/0/actions" -d '{"featureType": "Map", "MapActions": { "find": "51.2 0.0" }}'