I had a go with the Avenza Maps Android app during fieldwork to visualise my position within the landscape. I had access to a vegetation map and I wanted to see how close I was to transition zones between vegetation units, and also where I could walk to find a good place to install a vegetation monitoring plot.
It was a bit of a faff, but I worked out a method for importing raster and vector data into Avenza Maps. I used the free version of the Avenza Maps app:
To import a raster layer:
- In QGIS:
- Choose to export the chosen raster layer
- Choose GeoTIFF
- Choose “Rendered Image” when exporting
- Increase the resolution as desired
- Put the exported .tif on Android phone
- Open Avenza Maps
- Add the .tif as a Map
Avenza (free) only supports KML/KMZ and GPX, which don’t support polygons. To import point (vector) data:
- In QGIS:
- Ensure that the chosen point features only have one attribute “name”
- Choose to export the chosen features
- Choose GPX
- Select GPX_USE_EXTENSIONS = YES
- Put the exported .gpx on Android phone
- Open Avenza Maps
- Add the .gpx as a Layer in the chosen map