Need help to extract a certain region data
Added by naeem saddique almost 4 years ago
Hello everyone,
i am working on CORDEX-SA data and i want to extract my study area by using the shapefile. I tried with different ways but its not working. Please help me how can i extract certain region data. Please find the files in the attachment.
Thanks
| Jhelum_netcdf_degree.nc (149 KB) Jhelum_netcdf_degree.nc | shapefile | ||
| TOT_PREC_1970.nc (42.7 MB) TOT_PREC_1970.nc | CORDEX data |
Replies (8)
RE: Need help to extract a certain region data - Added by Karin Meier-Fleischer almost 4 years ago
Hi Naeem,
you have to remap the mask data to the same grid of the data before you can use it
cdo -div TOT_PREC_1970.nc -remapbil,TOT_PREC_1970.nc Jhelum_netcdf_degree.nc outfile.nc
-Karin
RE: Need help to extract a certain region data - Added by naeem saddique almost 4 years ago
Thank you very much for you response but when i tried the code you mentioned above, i get the following error
"Aborted (core dumped)".What this error shows?
Thank you.
RE: Need help to extract a certain region data - Added by Karin Meier-Fleischer almost 4 years ago
Which version are you using?
RE: Need help to extract a certain region data - Added by naeem saddique almost 4 years ago
sorry i am late, with the following example and data its working perfectly, this example already ans by someone in group.
cdo mul -selname,altcddETCCDI altcdd_yr_HFB_4K_CC_m101_2051-2110.nc China.nc masked.nc
This means version is ok, there is some problem in data.
RE: Need help to extract a certain region data - Added by naeem saddique almost 4 years ago
Karin Meier-Fleischer wrote:
Hi Naeem,
you have to remap the mask data to the same grid of the data before you can use it
[...]
-Karin
Dear CDO users,
still, i am not able to figure out the problem. could you please help me and attach output also.
Thanks.
RE: Need help to extract a certain region data - Added by Karin Meier-Fleischer almost 4 years ago
cdo -selvar,altcddETCCDI altcdd_yr_HFB_4K_CC_m101_2051-2110.nc infile.nc cdo -f nc -expr,'China = ((China > 0.0)) ? 1.0 : 0.0' -remapnn,infile.nc China.nc mask_remap.nc cdo -mul infile.nc mask_remap.nc outfile.nc
RE: Need help to extract a certain region data - Added by naeem saddique almost 4 years ago
This example cdo -selvar,altcddETCCDI altcdd_yr_HFB_4K_CC_m101_2051-2110.nc infile.nc already working in my computer also,
my problem is with this Jhelum_netcdf_degree.nc, you run this data please, i again attached the files.
thanks.
RE: Need help to extract a certain region data - Added by Karin Meier-Fleischer almost 4 years ago
What? See my first answer! The files are identical and the command mentioned above works fine.