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Results tagged with dem
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user 600
For questions about Digital Elevation Models (DEM), Digital Terrain Models (DTM) and Digital Surface Models (DSM)
7
votes
Surface distance on DEM between two coordinates
If the DEM has a coarser resolution your overland distance will always be a bit lower (unless you have strange border conditions), but in reality this difference is most likely not important. …
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2
votes
Loading .hgt file in SAGA GIS
In fact you can open directly in SAGA using gdal. Use modules/file/gdal or just drag and drop the file on saga.
- 6,249
7
votes
Generating random but believable digital elevation model?
You could also consider having a script that takes random part of an existing real DEM. …
- 6,249
2
votes
Converting DEM into areas of "flatness", with arbitrary fill/cut to area ratio?
As far as I understand your question, you might be very interested in the techniques mentioned in this paper:
Gallant, J.C., Dowling, T.I. (2003): 'A multiresolution index of valley bottom flatness fo …
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2
votes
River drainage basin boundary
If you don't find a map, SAGA GIS has a module called watershed basins that uses a dem and the channel network (your rivers). … If you use a coarse dem this goes fast.
http://www.saga-gis.org/saga_modules_doc/ta_channels/index.html …
- 6,249
3
votes
Integrating DEM within kriging and other interpolation methods?
Search for regression kriging or kriging with external drift.
But on topic: How many datapoints do you have? What exactly do you want to predict at which scale?
Kriging and especially regression kri …
- 6,249
2
votes
shadow simulation from buildings
Not in Arcgis, but the free SAGA GIS can calculate the shade of objects in a digital surface model:
http://www.saga-gis.org/saga_modules_doc/ta_lighting/ta_lighting_00.html
Use the analytical hillshad …
- 6,249