IBM Visualization Data Explorer Programmer's Reference

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DXMapCheck

Function

Verifies that the types of input and map are valid to be used as parameters to the DXMap routine.

Syntax

#include <dx/dx.h>

Object DXMapCheck(Object input, Object map, char *index,
Type *type, Category *category, int *rank, int *shape)

Functional Details

If map is an Array, it must contain a single element. If map is not an Array, the type, category, rank, and shape of the input component specified by index must match that of the "positions" component of the map. The type, category, rank and shape of the map (and of the data Object produced by this mapping) are returned in the corresponding arguments, type, category, rank, and shape.

The type is one of the following:


TYPE_BYTE            TYPE_HYPER        TYPE_SHORT
TYPE_UBYTE           TYPE_INT          TYPE_USHORT
TYPE_DOUBLE          TYPE_UINT         TYPE_STRING
TYPE_FLOAT

The category is either CATEGORY_REAL or CATEGORY_COMPLEX.

Return Value

Returns the input argument if input and map are valid for mapping; otherwise, returns NULL but does not set an error code.

See Also

DXMap, DXMapArray

14.2 , "Interpolation and Mapping".


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