Routines (alphabetical) > Routines: H > HDF Routines > HDF_VD_ISATTR

# HDF_VD_ISATTR

The HDF_VD_ISATTR function determines whether or not a VData is storing an attribute. HDF stores attributes as VDatas, so this routine provides a means to test whether or not a particular VData contains an attribute.

## Examples

For an example using this routine, see HDF_VD_ATTRSET.

## Syntax

Result = HDF_VD_ISATTR(VData)

## Return Value

Returns TRUE (1) if the VData is storing an attribute, FALSE (0) otherwise.

## Arguments

### VData

The VData handle returned by a previous call to HDF_VD_ATTACH.

## Keywords

None

## Version History

4.0 | Introduced

## See Also

HDF_VD_ATTRFIND, HDF_VD_ATTRINFO, HDF_VD_ATTRSET, HDF_VD_NATTRS