OpenTopoMap renders in Designer with https://tile.opentopomap.org/{z}/{x}/{y}.png but fails to display on device.
Remove the .png and display in a webviewer?
https://tile.opentopomap.org/#map=12/49.0000/1.0000
OpenTopoMap is a free topographic map generated from OpenStreetMap and SRTM elevation data .
Display a tile using Tim's suggestion.
So finally, when I zoomed out, it turned out that the topomap tiles do appear, except in a certain area around my own location.
Steve, Tim: I don’t want to use a WebViewer.
OK, the use section indicates this:
https://{a|b|c}.tile.opentopomap.org/{z}/{x}/{y}.png
What goes in a,b,c and z,x,y ?
OK, I got that a,b, or c is one of the servers.
Apparently, you need to convert the lat/lon coordinates to x,y values ?