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Re: gziped files [message #11473 is a reply to message #11388]

Fri, 10 April 1998 00:00

biomedical
Messages: 13
Registered: January 1998

Junior Member

dlhopols@knmi.nl wrote:
> mph406@biomed.abdn.ac.uk wrote:
>> read them into an array (which I can already do when unzipped
>> manually from
>> the system prompt) and then re-zip the files, all within a .pro.
>

> SPAWN,command,unit = lun

I think the previous question 'zip-unzip' in a .pro file meant
that idl program zip-unzip an image file without the help of
system commands. Image files are huge, compression is necessary,
zcat (for UNIX) or winzip, pczip (for PC) are good shortcuts, but
it at least not elegent to launch a system command, any way I don't
like it. I am wondering whether there are functions already written
in IDL to do the basic compression(lossless encoding) to reduce
the image file size.

Thanks

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		gziped files By: mph406 on Thu, 09 April 1998 00:00
		Re: gziped files By: biomedical on Fri, 10 April 1998 00:00

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