ccdo : invoke CDO with a unary operator

Apply CDO on a single dataset or object, with a CDO operator as argument

References : https://code.zmaw.de/projects/cdo/embedded/1.6.4/cdo.html

Provider / contact : climaf at meteo dot fr

Input : any object or dataset

Mandatory argument:

• operator : a CDO unary operator (as e.g. fldavg, timavg ...)

Output : the result of CDO operator

Climaf call example

>>> ds= .... #some dataset, with whatever variable
>>> annual_cycle=ccdo(ds,operator='ymonavg')

Side effects : none

Implementation : using script mcdo.sh, which can also select a variable, a time period, a latlon box ...;

Note : because the choice of operator is left to the user, CliMAF assumes that the output has squeezed dimension(s) over time or space (and hence will not attempt to re-use this output for extracting a sub-period or sub-domain)