The HDF_SD_SELECT function returns an SD dataset ID given the current SD interface ID, and the zero-based SD dataset index.

HDF_SD_FILEINFO can be used to determine the number of SD datasets in an HDF file, HDF_SD_REFTOINDEX can be used to find the index from its SD dataset ID, and HDF_SD_NAMETOINDEX can be used to find the index from its name.

Examples

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; Open an HDF file:

SDinterface_id = HDF_SD_START('test.hdf')

; Access the first SD in the HDF file:

SDdataset_id_1=HDF_SD_SELECT(SDinterface_id, 0)

; End access to any SD ids:

HDF_SD_ENDACCESS, SDdataset_id_1

; Close the file:

HDF_SD_END, SDinterface_id

Syntax

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Result = HDF_SD_SELECT(SDinterface_id, Number)

Return Value

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Returns the specified SD dataset’s identifier.

Arguments

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SDinterface_id

A SD interface ID as returned from HDF _SD_START.

Number

A zero-based SD dataset index.

Keywords

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None

Version History

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4.0	Introduced

See Also

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HDF_SD_CREATE, HDF_SD_END, HDF_SD_ENDACCESS, HDF_SD_NAMETOINDEX, HDF_SD_REFTOINDEX, HDF_SD_SELECT, HDF_SD_START