Select multiple fields via GRIB1 parameters — cdo

This module selects multiple fields from infile and writes them to outfile. selection-specification is a filename or in-place string with the selection specification. Each selection-specification has the following compact notation format: <type>(parameters; leveltype(s); levels) type " " sel for select or del for delete (optional) parameters" " GRIB1 parameter code number leveltype " " GRIB1 level type levels " " value of each level Examples: (1; 103; 0) (33,34; 105; 10) (11,17; 105; 2) (71,73,74,75,61,62,65,117,67,122,121,11,131,66,84,111,112; 105; 0) The following descriptive notation can also be used for selection specification from a file: SELECT/DELETE, PARAMETER=parameters, LEVTYPE=leveltye(s), LEVEL=levels Examples: SELECT, PARAMETER=1, LEVTYPE=103, LEVEL=0 SELECT, PARAMETER=33/34, LEVTYPE=105, LEVEL=10 SELECT, PARAMETER=11/17, LEVTYPE=105, LEVEL=2 SELECT, PARAMETER=71/73/74/75/61/62/65/117/67/122, LEVTYPE=105, LEVEL=0 DELETE, PARAMETER=128, LEVTYPE=109, LEVEL=* The following will convert Pressure from Pa into hPa; Temp from Kelvin to Celsius: SELECT, PARAMETER=1, LEVTYPE= 103, LEVEL=0, SCALE=0.01 SELECT, PARAMETER=11, LEVTYPE=105, LEVEL=2, OFFSET=273.15 If SCALE and/or OFFSET are defined, then the data values are scaled as SCALE*(VALUE-OFFSET).

Usage

cdo_changemulti(ifile, ofile = NULL)

cdo_delmulti(ifile, ofile = NULL)

cdo_selmulti(ifile, ofile = NULL)

Arguments

ifile: String with the path to the input file.
ofile: String with the path to the output file.

Value

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.

Details

selmulti     Select multiple fields
delmulti     Delete multiple fields
changemulti  Change identication of multiple fields