The topography tag has no wiki summary.
3
votes
4answers
793 views
Add UTM labels to grid in qgis
I try to use qgis to create a custom topographic map for outdoor use: UTM, 1:50000.
What these maps usually have is a 1km x 1km grid, which at the bottom is labeled with a shorthand for the ...
3
votes
1answer
346 views
Map Grid Index / Reference for Canadian Topo Map
Does anyone know where I can find some kml at different resolutions to show the grid reference for the Canadian topographic maps (CanTopo and toporama). Much like is displayed on the map here: ...
0
votes
1answer
252 views
Calculate CTI TWI using raster calculator: Negative values
I am calculating Topographic Wetness Index for a study area using SRTM DEM (90 and 30m).
I understand there are many "flavors" of TWI (CTI).
I have been using: TWI = ln(As +1 / tanB)
where As ...
