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Re: Reading from process pipes in IDL? [message #21791 is a reply to message #21782]

Thu, 21 September 2000 00:00

gfirem1
Messages: 1
Registered: September 2000

Junior Member

Benno Puetz (puetz@mpipsykl.mpg.de) wrote:
: I have been trying to read image data from compressed (*.gz) files.
: I would prefer a way similar to PERL's
: open(FILE, "gzip -cd $file |");

Benno -

If you know the array size in advance, you can use the -c flag to gunzip
to stdout and capture the output in a unit pipe:

IDL> imagedata=intarr(1325,800)
IDL> spawn, 'gunzip -c testdata.dat.Z', unit=dataunit
IDL> readu,dataunit,imagedata
IDL> free_lun,dataunit
IDL> help,imagedata
IMAGEDATA INT = Array[1325, 800]

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[Message index]

		Re: Reading from process pipes in IDL? By: Craig Markwardt on Thu, 21 September 2000 00:00
		Re: Reading from process pipes in IDL? By: landsman on Thu, 21 September 2000 00:00
		Re: Reading from process pipes in IDL? By: Craig Markwardt on Thu, 21 September 2000 00:00
		Re: Reading from process pipes in IDL? By: gfirem1 on Thu, 21 September 2000 00:00
		Re: Reading from process pipes in IDL? By: George N. White III on Thu, 21 September 2000 00:00

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