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Re: netCDF - ... and file size [message #15393]

Fri, 14 May 1999 00:00

bowman
Messages: 121
Registered: September 1991

Senior Member

In article <373C8FDA.3C47B2@io.harvard.edu>, Martin Schultz
<mgs@io.harvard.edu> wrote:

> Martin Schultz wrote:
>>
>
> ... the file size of my test netCDF file is practically identical to the
> size of my
> "primitive" binary file (all dat being stored as float). Wouldn't it be
> nice if netCDF would support compression? In my case that would mean a
> reduction by a factor of 4 (using gzip). Or would they loose
> cross-platform portability then?

There has been talk about doing this, but I think there are considerable
obstacles. You can maintain cross-platform compatibility by using 'scale'
and 'offset' attributes to linearly transform your variables and store
them as, for example, 2-byte INTs instead of 4-byte FLOATS (at some cost
in precision, of course).

Ken

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[Message index]

		Re: netCDF - ... and file size By: bowman on Fri, 14 May 1999 00:00
		Re: netCDF - ... and file size By: Martin Schultz on Fri, 14 May 1999 00:00
		Re: netCDF - ... and file size By: robert.m.candey.1[1] on Mon, 17 May 1999 00:00

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