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Re: Problems with reading images [message #75275 is a reply to message #75270]

Wed, 23 February 2011 12:26

wlandsman
Messages: 743
Registered: June 2000

Senior Member

On Wednesday, February 23, 2011 11:50:06 AM UTC-5, Ding wrote:
> Hi everyone,
>
> I used two procedures, 'read_jpeg.pro' and 'read_png.pro', both of
> them worked well.

READ_JPEG and READ_PNG are not writting in IDL but are DLMs which should be automatically linked when starting IDL. (Actually there is a file read_png.pro but it is obsolete, and only used to call READ_PNG as a procedure rather than a function. That is why you got my favorite headscratching IDL error message:

% Compiled module: READ_PNG.
% Attempt to call undefined procedure/function: 'READ_PNG'.

Unfortuantely, I'm not sure why you aren't automatically linking to the DLMs. You might tell us your IDL version and machine. Also, is it possible you are using a different IDL version now? --Wayne

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[Message index]

		Re: Problems with reading images By: penteado on Wed, 23 February 2011 14:40
		Re: Problems with reading images By: Ding on Wed, 23 February 2011 14:24
		Re: Problems with reading images By: wlandsman on Wed, 23 February 2011 12:26
		Re: Problems with reading images By: penteado on Wed, 23 February 2011 12:24
		Re: Problems with reading images By: Ammar Yusuf on Wed, 23 February 2011 12:15
		Re: Problems with reading images By: Ding on Wed, 23 February 2011 11:27
		Re: Problems with reading images By: Jean[2] on Wed, 23 February 2011 10:52

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