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Harris Geospatial / Docs Center / IDL Reference / I/O - HDF / HDF_VD_GETID

HDF_VD_GETID

HDF_VD_GETID

The HDF_VD_GETID function returns the VData reference number for the next VData in an HDF file after the specified VData_id.

Set VData_id to -1 to return the first VData ID in the file.

Syntax


Result = HDF_VD_GETID(FileHandle, VData_id)

Return Value


Returns the next VData reference number.

Arguments


FileHandle

The HDF file handle returned by a previous call to HDF_OPEN.

VData_id

The VData reference number, generally obtained by HDF_VD_GETID or HDF_VD_LONE. Set this argument to -1 to return the first VData in the file.

Keywords


None

Version History


4.0

Introduced



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