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How change NaN values?

Added by Guilherme Martins about 10 years ago

Hi all,

I'm trying to change the NaN values in my file but I'm not capable. I tried the setmissval (cdo setmissval,-999.9 if.nc of.nc) but it doesn't work.

When I type cdo infon the result is:

-1 :       Date     Time   Level Gridsize    Miss :     Minimum        Mean     Maximum : Parameter name
     1 : 2008-01-01 00:00:00       0    27216       0 :        -nan        -nan        -nan : prec          
     2 : 2008-01-02 00:00:00       0    27216       0 :        -nan        -nan        -nan : prec          
     3 : 2008-01-03 00:00:00       0    27216       0 :        -nan        -nan        -nan : prec          
     4 : 2008-01-04 00:00:00       0    27216       0 :        -nan        -nan        -nan : prec          
     5 : 2008-01-05 00:00:00       0    27216       0 :        -nan        -nan        -nan : prec          
     6 : 2008-01-06 00:00:00       0    27216       0 :        -nan        -nan        -nan : prec          
     7 : 2008-01-07 00:00:00       0    27216       0 :        -nan        -nan        -nan : prec          
     8 : 2008-01-08 00:00:00       0    27216       0 :        -nan        -nan        -nan : prec          
     9 : 2008-01-09 00:00:00       0    27216       0 :        -nan        -nan        -nan : prec          
    10 : 2008-01-10 00:00:00       0    27216       0 :        -nan        -nan        -nan : prec

I'm sending a piece of my file (tmp.nc) and the ncdump file (ncdump.txt).

Any help is very appreciated.

Thanks,

Guilherme.

Download all files
tmp.nc (5.06 MB) tmp.nc
ncdump.txt (2 MB) ncdump.txt

Replies (2)

RE: How change NaN values? - Added by Uwe Schulzweida about 10 years ago

The _FillValue attribute is missing in the netCDF File. In this case you need to set it e.g. with

cdo setmissval,nan ifile ofile
Then you can change it to -999.9:
cdo setmissval,-999.9 -setmissval,nan ifile ofile

RE: How change NaN values? - Added by Guilherme Martins about 10 years ago

Dear Uwe,

Thank you for your help.

Guilherme.

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