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How to set missing days with mergetime

Added by Fredrick AJ. almost 6 years ago

Hi Guys,

I am using:
cdo mergetime infiles*.nc janfiles.nc
to merge daily data files starting from day 11 through 25 in a January month. How can I include missing data days ie. 1 through 10 and 26 through 31?

Thanks
Faj


Replies (2)

RE: How to set missing days with mergetime - Added by Karin Meier-Fleischer almost 6 years ago

Hi Faj,

hm, you have to create the missing timesteps with variables having only missing data which I would do within a Korn Shell script like

#!/bin/ksh

#-- merge your jan files

cdo mergetime infiles*.nc janfiles.nc 

#-- create 1 timestep with missing values

cdo -setctomiss,1e20 -addc,1e20 -mulc,0 -seltimestep,1 janfiles.nc tmp_1tstep.nc

#-- copy janfiles.nc to temporary file

cp janfiles.nc ooo1.nc

#-- create and add missing files 1 to 10

for i in $(seq 1 10) 
do
   cdo -O -mergetime -settaxis,2000-01-${i},12:00:00,1day tmp_1tstep.nc ooo1.nc tmp.nc
   mv tmp.nc ooo1.nc
done

#-- create and add missing files 26 to 31

for i in $(seq 26 31)
do
   cdo -O -mergetime -settaxis,2000-01-${i},12:00:00,1day tmp_1tstep.nc ooo1.nc tmp.nc
   mv tmp.nc ooo1.nc
done

#-- rename temporary file ooo1.nc to janfiles.nc containing now 31 timesteps

mv ooo1.nc janfiles

#-- delete temporary file tmp_1tstep.nc

rm -rf tmp_1tstep.nc

exit

-Karin

RE: How to set missing days with mergetime - Added by Fredrick AJ. almost 6 years ago

Thanks Karin,
for the hint and code..
Best regards
Faj

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