Get wedge from curvilinear file of Antarctica.

Added by Oliver Angelil over 8 years ago

I want to select a wedge (a "pizza slice" as one would view it on a spherical globe) from the attached file starting at the south pole, up to about -60S, and between two lines of longitude.

When selecting the area with:
cdo sellonlatbox,50,70,-90,-60 file.nc file2.nc
and viewing the file with ncview, it looks like the longitudes at the pole are not the same as around -60S (as if CDO as simply taken a "visual box" of the original data and not maintained the "50" to "70" lines of longitude with changing latitude).

Thanks,
Oliver

file.nc (2.07 MB) file.nc

Replies (2)

RE: Get wedge from curvilinear file of Antarctica. - Added by Ralf Mueller over 8 years ago

your input file essentially has a box accross the southpole. sellonlatbos is designed for lonlat-grids. I interpolated with bilinear weights because the coordinate bounds are missing

cdo -P 2 -sellonlatbox,50,70,-90,-60 -remapbil,r720x360 file.nc file2.nc

looks like this

tasty piece of cake, eh?

air_tempfile2.png (106 KB) air_tempfile2.png

RE: Get wedge from curvilinear file of Antarctica. - Added by Oliver Angelil over 8 years ago

Wow, so easy with CDO — what a piece of cake!

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