This function creates a grid from a collection of station data. The syntax is:
coll2gr(cnum <,num>)
cnum collection numbernum
number of vertical levels in the output grid (default is 10)
If num is given as "-u", then the
vertical levels will be a union of all the levels in the collection of
station data.
coll2gr, you must create the collection of
stations using the GrADS command collect.
coll2gr does not yet support time slices; currently, it will
only work when the collection of stations is a collection of
vertical profiles.
coll2gr produces an output grid that varies in X and Z;
the dimension environment used when coll2gr is invoked
must also be X and Z varying. The X axis of the output grid will contain
the equally spaced station profiles and will span the range of the
current X dimension environment. The Z axis of the output grid will
span the range of the current Z dimension environment and will have
either the specified number of levels or a union of the levels. Data
points outside of the range of levels will be used for interpolating
to within the range if appropriate.
"-u" option will only work for data in pressure
vertical coordinates. If your vertical coordinate is height,
num should be the actual number of vertical levels
in the collection of profiles. Note: This restriction has been removed as of version 2.1.0.