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Re: Problems with reading images [message #75277 is a reply to message #75275] Wed, 23 February 2011 12:24 Go to previous messageGo to previous message
penteado is currently offline  penteado
Messages: 866
Registered: February 2018
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On Feb 23, 4:27 pm, Ding <gardener_2...@hotmail.com> wrote:
> I am quit sure, I include the all the libraries and working
> directories in the start up routine

Are you sure you were using 'read_jpeg.pro' and 'read_png.pro'? Also,
the way you were calling read_png was as a function, not a procedure.

IDL's read_png() and read_jpeg do not come (anymore, at least) as .pro
files. They are DLMs. If you are trying to use them, the relevant path
is the DLM search path, and it should include IDL's default path.

What is the result of

print,!dlm_path

?

What you pasted above indicates that IDL found and compiled a
read_png.pro, which could be the obsolete file idl/idl80/lib/obsolete/
read_png.pro, which contains a procedure, not a function. That would
be the reason IDL then complains it did not find a function called
read_png.

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