Extract portion of netcdf file based on latitude and longitude in R

Asked Jul 07 '17 at 06:37

Active Jul 07 '17 at 06:41

Viewed 202 times

I have a netcdf file of GRACE data containing change in groundwater storage of all over the world from 2002 to 2016. That also contains lat/lon values I want to extract data of a particular study area from that world data based upon lat lon values of that area using R . The latitude variable runs from +90 to -90 and the longitude variable runs form 0 to 360.

I wish to extract a subset of the overall grid using the following geographical corner boundaries. bottom left corner :(lat 21.5, loon 85.5) Top left Corner :(lat 27.5, lon 85.5) Top right corner :(lat 27.5 lon 89.5) bottom right corner :(lat 21.5, lon 89.5) .

Any advice would be greatly appreciated.

edited Jul 07 '17 at 06:41

CinCout

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asked Jul 07 '17 at 06:37

Soumabha karak

Thanks for your comment. But problem is I have to solve this with R not python – Soumabha karak Jul 08 '17 at 05:00
Why not simply use the CDO solution cdo sellonlatbox,lon1,lon2,lat1,lat2 in.nc out.nc ? – ClimateUnboxed Jul 09 '17 at 08:50
@Adrian Tompkin can u plz elaborate the cdo solution..actually I am new in programming... – Soumabha karak Jul 09 '17 at 14:17
please see the linked question/answer for full explanation – ClimateUnboxed Jul 10 '17 at 12:24

Extract portion of netcdf file based on latitude and longitude in R

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