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- E.1 NCSA HDF Vset
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- NCSA HDF Vset Calls Summary E.1
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- National Center for Supercomputing Applications
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- November 1990
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- November 1990
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- Appendix E Compatibility Information for 1.0 Users
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- Overview
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- This appendix explains how to convert HDF Vset 1.0 files so they
- will be compatible with HDF Vset 2.0.
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- Source Files
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- Since the release of HDF Vset 1.0, the data structures associated
- with Vsets (ie HDF representations of vgroups and vdatas) have
- been revised to allow new features to be incorporated in future.
- Thus files created by release 2.0 cannot be read by applications that
- use the earlier 1.0 release of the HDF Vset library.
-
- The conversion program, vcompat, should be used to convert an
- existing HDF Vset file (that was created using release 1.0 ) so that
- it is compatible with this and future releases. This program is
- included in this release as a C-source file.
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- The conversion merely creates new data description elements in
- the same file. As a result, that same file may still be used with
- existing applications (that uses the release 1.0 Vset library) as
- well as new applications (that uses the release 2.0 library). Note
- that after the conversion, the original file will become slightly
- bigger.
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- Existing applications may link to the release 2.0 Vset library with
- no modifications needed.
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- vcompat may be created as follows:
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- cc vcompat.c -o vcompat libdf.a libvg.a
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- To convert an existing HDF Vset file, type:
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- vcompat <existing-file>
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- vcompat will not convert a HDF file that is already compatible
- with release 2.0.
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