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Re: Matlab to IDL [message #36717 is a reply to message #36627]

Mon, 13 October 2003 03:04

Nigel Wade
Messages: 286
Registered: March 1998

Senior Member

dino nicola wrote:
> hi! i'm trying to translate this Matlab script into IDL, but the image
> I show is not right.
>
> function [RAD]=read_1rad(i_pr,Directory,prefix)
> i_pr
> Directory
> CONC=[Directory prefix]
> nome=[ CONC num2str(i_pr) '.sdt']
> FID=0;
> FID=fopen(nome,'r','ieee-be');

The ieee-be option indicates your data is big endian.

> [RAD,c]=fread(FID,[1024,512],'float32');
> figure(3), imshow(RAD,[ ]); title(' proiezione ')
> fclose(FID);
> colormap(gray(512));
>
>
> Here is the IDL script:
>
> file='c:\pcon_1.sdt'
> rad=fltarr(1024,512)
> openr,lun,file,/get_lun

to read big endian data in IDL on a little endian system you need to append
the /SWAP_ENDIAN keyword to openr.

What hardware are you running IDL on?

--
Nigel Wade, System Administrator, Space Plasma Physics Group,
University of Leicester, Leicester, LE1 7RH, UK
E-mail : nmw@ion.le.ac.uk
Phone : +44 (0)116 2523548, Fax : +44 (0)116 2523555

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[Message index]

		Matlab to IDL By: dino.nicola on Sat, 11 October 2003 09:50
		Re: Matlab to IDL By: dino.nicola on Mon, 13 October 2003 10:01
		Re: Matlab to IDL By: Nigel Wade on Mon, 13 October 2003 03:04
		Re: Matlab to IDL By: James Kuyper on Mon, 10 July 2006 11:46
		Re: Matlab to IDL By: Paul Van Delst[1] on Mon, 10 July 2006 10:49
		Re: Matlab to IDL By: Ken Mankoff on Sun, 16 July 2006 04:00
		Re: Matlab to IDL By: btt on Mon, 10 July 2006 10:09
		Re: Matlab to IDL By: Paul Van Delst[1] on Mon, 10 July 2006 10:03
		Re: Matlab to IDL By: Bruce Bowler on Mon, 17 July 2006 08:05

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