setgrid: Set grid information

In rcdo: Wrapper of 'CDO' Operators

Set grid information

Description

This module modifies the metadata of the horizontal grid. Depending on the chosen operator a new grid description is set, the coordinates are converted or the grid cell area is added.

Usage

cdo_setgrid(
  ifile,
  grid = NULL,
  gridtype = NULL,
  gridarea = NULL,
  gridmask = NULL,
  projparams = NULL,
  ofile = NULL
)

cdo_setgridarea(
  ifile,
  grid = NULL,
  gridtype = NULL,
  gridarea = NULL,
  gridmask = NULL,
  projparams = NULL,
  ofile = NULL
)

cdo_setgridmask(
  ifile,
  grid = NULL,
  gridtype = NULL,
  gridarea = NULL,
  gridmask = NULL,
  projparams = NULL,
  ofile = NULL
)

cdo_setgridtype(
  ifile,
  grid = NULL,
  gridtype = NULL,
  gridarea = NULL,
  gridmask = NULL,
  projparams = NULL,
  ofile = NULL
)

cdo_setprojparams(
  ifile,
  grid = NULL,
  gridtype = NULL,
  gridarea = NULL,
  gridmask = NULL,
  projparams = NULL,
  ofile = NULL
)

Arguments

ifile	String with the path to the input file.
grid	STRING - Grid description file or name
gridtype	STRING - Grid type (curvilinear, unstructured, regular, lonlat, projection or dereference)
gridarea	STRING - Data file, the first field is used as grid cell area
gridmask	STRING - Data file, the first field is used as grid mask
projparams	STRING - Proj library parameter (e.g.:+init=EPSG:3413)
ofile	String with the path to the output file.

Details

setgrid        Set grid
               Sets a new grid description. The input fields need to have the same grid size as the size
               of the target grid description.
setgridtype    Set grid type
               Sets the grid type of all input fields. The following grid types are available:
               curvilinear "    "    Converts a regular grid to a curvilinear grid
               unstructured"    "    Converts a regular or curvilinear grid to an unstructured grid
               dereference "    "    Dereference a reference to a grid
               regular     "    "    Linear interpolation of a reduced Gaussian grid to a regular Gaussian grid
               regularnn   "    "    Nearest neighbor interpolation of a reduced Gaussian grid to a regular Gaussian grid
               lonlat      "    "    Converts a regular lonlat grid stored as a curvilinear grid back to a lonlat grid
               projection  "    "    Removes the geographical coordinates if projection parameter available
setgridarea    Set grid cell area
               Sets the grid cell area. The parameter gridarea is the path to a data file,
               the first field is used as grid cell area. The input fields need to have the same
               grid size as the grid cell area. The grid cell area is used to compute
               the weights of each grid cell if needed by an operator, e.g. for fldmean.
setgridmask    Set grid mask
               Sets the grid mask. The parameter gridmask is the path to a data file,
               the first field is used as the grid mask. The input fields need to have the same
               grid size as the grid mask. The grid mask is used as the target grid mask for
               remapping, e.g. for remapbil.
setprojparams  Set proj params
               Sets the proj_params attribute of a projection. This attribute is used to compute
               geographic coordinates of a projecton with the proj library.

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.

rcdo documentation built on June 8, 2025, 12:36 p.m.