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Re: Another IDL twist

edward.s.meinel@aero.org writes:

> Does anyone know the rhyme or reason for the
> calling methods for the built-in IDL READ_*
> procedures? Sometimes it is:
>    image = READ_ASCII(file_name)
> but other times it is:
>    READ_GIF, file_name, image
> What's going on? 
> Do I just have to look it up everytime?

    One option is to upgrade to 5.3.  I've only played with the new
query_image, read_image and write_image routines (and the dialog_xxx
versions) but it looks like they'll do a lot of the hard work for you.