0

I am new to GRASS GIS, and have been trying to use the r.slope.aspect function to find out the slope, dx and dy rater map from an elevation map(512*512)[1]. But I am getting the following output:

||Rows: 64228 | | Columns: 39276 | | Total Cells: 2522618928 | | Range of data: min = -nan max = -nan

The problem being how is the dimension of the grid is expanding? and how are all the values nan.

The following statement is used:

r.sim.water -t elevin=testElevationLive@PERMANENT dxin=elev_dx@PERMANENT dyin=elev_dy@PERMANENT depth=waterDepth

Can someone kindly help me to figure out the problem behind?

[1]https://www.dropbox.com/s/ooxcj0y6v2kzeml/testElevationLive.tif?dl=0

  • 1
    have you set the region with your map before ? (I have no problem with you example file) – gene Jun 4 '15 at 19:08
  • @gene I suggest to make an answer from your comment, so that Vishal can accept it and this question is marked as resolved. – wenzeslaus Jun 10 '15 at 4:35
  • Have you set the region with your map before ? (I have no problem with you example file) – gene Jun 11 '15 at 15:02
  • following the suggestion, done – gene Jun 11 '15 at 15:03

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.