Hi,
Is there a way of merging rainfall data and SRTM DEM (both in GEOTIFF format ) together?
The reason I’m asking this is because SRTM DEM (elevation layer) is just a terrain, on top of that terrain I want to measure how much rainfall has fallen to the DEM and which direction is it flowing to.
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Kind Regards
TS Gumede
Student Researcher
Meraka Institute, CSIR
office : 012 841 2606
mobile : 072 258 1650
Hi,
Is there a way of merging rainfall data and SRTM DEM (both in GEOTIFF format ) together?
Can you be more specific? What do you mean “merge”.
The reason I’m asking this is because SRTM DEM (elevation layer) is just a terrain, on top of that terrain I want to measure how much rainfall has fallen to the DEM and which direction is it flowing to.
Flow direction can be produced from a DEM with the r.watershed module.
If what you want is a calculation of how much total rainfall fell in each catchment, then first use the r.watershed module to create catchments, then convert the raster catchment map to vector polygons and finally run v.rast.stats on the catchment polygons, using the rainfall raster to calculate how much rain fell on each catchment.
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Micha Silver
Arava Development Co. +972-52-3665918
[http://www.surfaces.co.il](http://www.surfaces.co.il)