This function defines dimensions that are used by the field definition routines (described subsequently) to establish the size of the field.
            Examples
            In this example, we define a dimension, Band, with size 15:.
            status = EOS_GD_DEFDIM(gridID, "Band", 15)
            To specify an unlimited dimension that can be used to define an appendable array, the dimension value should be set to zero:
            status = EOS_GD_DEFDIM(gridID, "Unlim", 0)
            Syntax
            Result = EOS_GD_DEFDIM(gridID, dimname, dim)
            Return Value
            Returns SUCCEED(0) if successful and FAIL(–1) otherwise.
            Arguments
            gridID
            Grid id (long) returned by EOS_GD_CREATE or EOS_GD_ATTACH.
            dimname
            Name of dimension to be defined (string).
            dim
            The size of the dimension (long).
            Keywords
            None
            Version History