Get the grid cell index of one grid point selected by the parameter lon and lat.
cdo_gridcellindex(ifile, lon = NULL, lat = NULL)Operators that output one or more files return a character vector to the output files.
Operators that output an indefinite number of files return a string with the basename of the files.
Operatos that don't return filenames return a character vector with the string output.
String with the path to the input file.
INTEGER - Longitude of the grid cell in degree
INTEGER - Latitude of the grid cell in degree