The GRIB_FIND_NEAREST procedure finds the four nearest points of a latitude/longitude point.
Examples
See GRIB_GET_VALUES for a general example using the GRIB routines.
Syntax
GRIB_FIND_NEAREST, Ghandle, Lon, Lat [, MODE=Array] [, LATITUDES=Array] [, LONGITUDES=Array] [, INDEXES=Array] [, VALUE=Array] [, DISTANCES=Array])
Arguments
Ghandle
A GRIB handle.
Lon
Longitude of the point for which to search.
Lat
Latitude of the point for which to search.
Keywords
MODE
Set this keyword to the numeric mode. The default value is 4 (GRIB_NEAREST_SAME_POINT).
|
Mode Values |
Description |
|
1 |
GRIB_NEAREST_SAME_GRID
|
|
4 |
GRIB_NEAREST_SAME_POINT
|
The value can be ORed together. For example, MODE=5 sets both modes.
LATITUDES
Returns an array of latitude values of the nearest points.
LONGITUDES
Returns an array of longitude values of the nearest points.
INDEXES
Returns an array of indexes of the nearest points.
VALUES
Returns an array of values of the nearest points.
DISTANCES
Returns an array of distance values from the nearest points.
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