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

HDF_DFAN_GETLABEL

HDF_DFAN_GETLABEL

The HDF_DFAN_GETLABEL procedure reads the label for the given tag-reference pair in an HDF file.

Examples


fid = HDF_OPEN('test.hdf', /ALL)
label = 'TEST LABEL'
tag = 105 ; The annotation tag.
ref = 2 ; Choose a reference number.
; Write the label:
HDF_DFAN_PUTLABEL, 'test.hdf', tag, ref, label
; Read back the label:
HDF_DFAN_GETLABEL, 'test.hdf', tag, ref, outl
HELP, outl ; They look the same...
; Close the HDF file:
HDF_CLOSE, fid

Syntax


HDF_DFAN_GETLABEL, Filename, Tag, Ref, Label

Arguments


Filename

A scalar string that contains the name of the file to be read.

Tag

The tag number.

Reference

The reference number.

Label

A named variable in which the label is returned as a string.

Keywords


None

Version History


4.0

Introduced

See Also


HDF_DFAN_GETDESC, HDF_DFAN_LABLIST, HDF_DFAN_PUTDESC, HDF_DFAN_PUTLABEL



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