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VSsetexternalfile/vsfsextf

intn VSsetexternalfile(int32 vdata_id, char *filename, int32 offset)
vdata_id

IN:

Vdata identifier returned from VSattach

filename

IN:

Name of the external file

offset

IN:

Offset, in bytes, of the location in the external file the new data is to be written

Purpose

Stores vdata information in an external file.

Return value

Returns SUCCEED (or 0) if successful and FAIL (or -1) otherwise.

Description

Only the data will be stored externally. Attributes and all metadata will remain in the primary HDF file.

IMPORTANT: The calling program must ensure that the external files are relocated along with the primary file.

Read the Reference Manual page on SDsetexternalfile for more information on using the external file feature.

FORTRAN

integer function vsfsextf(vdata_id, filename, offset)

integer vdata_id, offset

character* (*) filename



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HDF User's Reference Manual, Draft 06/09/97, NCSA HDF Development Group.