ncl_wind {rcdo} | R Documentation |
Wind transformation
Description
This module contains CDO operators with an interface to NCL functions. The corresponding NCL functions have the same name. A more detailed description of those NCL function can be found on the NCL homepage https://www.ncl.ucar.edu.
Usage
cdo_uv2dv_cfd(
ifile,
u = NULL,
v = NULL,
boundOpt = NULL,
outMode = NULL,
ofile = NULL
)
cdo_uv2vr_cfd(
ifile,
u = NULL,
v = NULL,
boundOpt = NULL,
outMode = NULL,
ofile = NULL
)
Arguments
ifile |
String with the path to the input file. |
u |
STRING - Name of variable u (default: u) |
v |
STRING - Name of variable v (default: v) |
boundOpt |
INTEGER - Boundary condition option (0-3) (default: 0/1 for cyclic grids) |
outMode |
STRING - Output mode new/append (default: new) |
ofile |
String with the path to the output file. |
Details
uv2vr_cfd U and V wind to relative vorticity Computes relative vorticity for a latitude-longitude grid using centered finite differences. The grid need not be global and missing values are allowed. uv2dv_cfd U and V wind to divergence Computes divergence for a latitude-longitude grid using centered finite differences. The grid need not be global and missing values are allowed.
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.