Interpolation/
get_gridparams.pro
1) extract from a NetCDF file the longitude, latitude, and their dimensions
and make sure it is 1D or 2D arrays
or
2) given longitude and latitude arrays, get their dimensions and make
sure they are 1D or 2D arrays
get_gridparams
Interpolation
get_gridparams, in1, in2, in3, in4, in5, in6, in7, in8, DOUBLE=DOUBLE
Parameters
in1
in
required
Case 1: the name of the netcdf file
Case 2: 1d or 2d arrays defining longitudes and latitudes.
Out: the variable that will contain the longitudes
in2
in
required
Case 1: the name of the variable that contains the longitude in the NetCDF file
Case 2: 1d or 2d arrays defining longitudes and latitudes.
Note that these arrays are also outputs and can therefore be modified.
Out: the variable that will contain the latitudes
in3
in
required
Case 1: the name of the variable that contains the latitude in the NetCDF file
Case 2: the number of points in the longitudinal direction.
in4
out
Case 1: the number of points in the longitudinal direction
Case 2: the number of points in the latitudinal direction
in5
out
Case 1: the number of points in the latitudinal direction
Case 2: 1 or 2 to specify if lon and lat should be 1D (jpi or jpj)
arrays or 2D arrays (jpi,jpj). Note that of n_dimensions = 1, then the
grid must be regular (each longitude must be the same for all latitudes
and each latitude should be the same for all longitudes).
in6
out
the variable that will contain the longitudes
in7
out
the variable that will contain the latitudes
in8
out
1 or 2 to specify if lon and lat should be 1D (jpi or jpj)
Keywords
DOUBLE
use double precision to perform the computation
Examples
1)
IDL> get_gridparams, file, lonname, latname, lon, lat, jpi, jpj, n_dimensions
or
2)
IDL> get_gridparams, lon, lat, jpi, jpj, n_dimensions
1) IDL> ncdf_get_gridparams, 'coordinates_ORCA_R05.nc', 'glamt', 'gphit' $
, olon, olat, jpio, jpjo, 2
2) IDL> ncdf_get_gridparams, olon, olat, jpio, jpjo, 2
Version history
Version
$Id: get_gridparams.pro 238 2007-03-27 13:43:18Z pinsard $
History
November 2005: Sebastien Masson (smasson@lodyc.jussieu.fr)
Produced by IDLdoc 2.0.
