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Re: HDF export

• To: mathgroup at smc.vnet.net
• Subject: [mg18789] Re: HDF export
• From: paulh at wolfram.com (P.J. Hinton)
• Date: Thu, 22 Jul 1999 08:19:16 -0400
• Organization: Wolfram Research, Inc.
• References: <7n12q3$bd3@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

In article <7n12q3$bd3 at smc.vnet.net>, "Roberto Abraham" <abraham at ast.cam.ac.uk> writes:
 
> A central idea behind the HDF format is that the file should be somewhat
> "self documenting" in the sense of possibility including an internal
> description of the nature of the data, or at least through the use of
> sensible keyword names in the data hierarchy to indicate what sort of data
> is being stored.  However, I can't seem to figure out a way to achieve this
> in Mathematica.  Is there a way to export arrays and store them with
> specified names? 

Unfortunately, there are no mechanisms in Mathematica's Export[] function
for specifying set names.  You may want to use a tool like NCSA's hdfed to
add the desired set names.

	http://hdf.ncsa.uiuc.edu/hdftools.html

> Also, the on-line help for the Export[] function says that HDF format is 
> "supported for numerical and textual data" but I can't figure out how to 
> export a text string.

If you are working with an eight-bit character encoding, you could transform
the string into an array of characters (e.g. like what is returned by the
built-in Characters[] function) and then write out the array as Byte data 
types.

--
P.J. Hinton	
Mathematica Programming Group		paulh at wolfram.com
Wolfram Research, Inc.
Disclaimer: Opinions expressed herein are those of the author alone.