The HDF_VG_GETINFO procedure is a general VGroup inquiry routine. Set the various keywords to named variables to return information about different aspects of a VGroup in an HDF file.

Examples

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HDF_VG_GETINFO, Vgrp, CLASS=c, NAME=nm, NENTRIES=n

PRINT, c, nm, n

Syntax

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HDF_VG_GETINFO, VGroup [, CLASS=variable] [, NAME=variable] [, NATTRIBUTES=variable] [, NENTRIES=variable] [, REF=variable] [, TAG=variable]

Arguments

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VGroup

The VGroup handle returned by a previous call to HDF_VG_ATTACH.

Keywords

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CLASS

Set this keyword to a named variable in which the class of the VGroup is returned as a string.

NAME

Set this keyword to a named variable in which the name of the VGroup is returned as a string.

NATTRIBUTES

Set this keyword to a named variable in which the number of attributes assigned to the VGroup is returned as a long integer.

NENTRIES

Set this keyword to a named variable in which the number of objects inside the VGroup is returned as a long integer.

REF

Set this keyword to a named variable in which the reference number of the specified Vgroup is returned.

TAG

Set this keyword to a named variable in which the tag number of the specified Vgroup is returned.

Version History

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4.0	Introduced
8.5.1	Added NATTRIBUTES keyword

See Also

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HDF_VG_SETINFO