replace data values from gribA to gribB
Added by Christophe LOZAC'H 12 months ago
Hello,
I wish to iterate over all the lat lon points of two GRIB files, A and B. These points are identified by their index numbers, ranging from 0 to lastIndex. Using an index mapping file, for example, where index a in GRIB A corresponds to index b in GRIB B, I want to replace the data values in GRIB A with those in GRIB B. The two GRIB files do not have the same number of indices, but all indices have a correspondence. Is it possible?
Many thanks
Replies (2)
RE: replace data values from gribA to gribB - Added by Ralf Mueller 11 months ago
Hi Christophe!
With CDO you can apply masks or perform calculation of masked regions. This might work for you (operators: ifthen, gt, lt). With the two files upload I might be able to help in a better way.
if you know the correct index set, you might be able to use xarray, too
cheers
ralf
RE: replace data values from gribA to gribB - Added by Christophe LOZAC'H 11 months ago
Thank you for your help. Attached are a gribA file and a gribB file, along with the index mapping file between A and B. It is also possible to propose a function for converting one index to another, which would be more elegant.