remapping: bil works fine, con/con2 segmentation fault

Added by Antje Fitzner over 12 years ago

Dear all,

I want to remap climate data using conservative remapping (con and con2 give the same output). When doing the same for bilinear remapping, it works fine!!

Here is what I have been doing:
$ cdo remapcon,grid.nc in.nc out.nc # same for con2
11668 Segmentation fault (core dumped)

$ cdo gencon,grid.nc in.nc weights.nc
$ cdo remap,grid.nc,weights.nc in.nc out.nc
12718 Segmentation fault (core dumped)

Is there something I am overlooking? I am a bit confused since bil does work.

Thanks for your help!

PS: I am using CDO 1.5.3

Replies (4)

RE: remapping: bil works fine, con/con2 segmentation fault - Added by Uwe Schulzweida over 12 years ago

Hi Antje,

Could you please attach an example file? That will help us a lot to solve this problem.

Cheers, Uwe

RE: remapping: bil works fine, con/con2 segmentation fault - Added by Antje Fitzner over 12 years ago

Dear Uwe,

Sure, attached my original files in.nc and grid.nc

Thanks for your help!
Antje

Download all files

grid.nc (190 KB) grid.nc
in.nc (5.68 MB) in.nc

RE: remapping: bil works fine, con/con2 segmentation fault - Added by Uwe Schulzweida over 12 years ago

Dear Antje,

Thanks for the files! I can reproduce this error. A "segmentation fault" is definitely a bug in CDO. I will try to solve this problem in the next release.
The reason for this bug is an unexpected structure of the arrays grid_corner_lat and grid_corner_lon. The dimension order is
"(grid_corners, rlat, rlon)", expected is "(rlat, rlon, grid_corners)". An other problem is that the units of these arrays differ from the units of the coordinates lat and lon.

Best regards,
Uwe

RE: remapping: bil works fine, con/con2 segmentation fault - Added by Antje Fitzner over 12 years ago

Dear Uwe,

Thanks for your help!
Changing the units and order solved it!

Best,
Antje

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