| Re: Something Has Changed [message #61474 is a reply to message #61453] |
Fri, 18 July 2008 09:56   |
Douglas Dirks
Messages: 5
Registered: June 2008
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Junior Member |
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On Jul 18, 9:50 am, "mgal...@gmail.com" <mgal...@gmail.com> wrote:
> On Jul 18, 9:32 am, Douglas Dirks <ddirk...@gmail.com> wrote:
>
>
>
>> IDL's behavior when searching for routines to compile or restore
>> has not changed -- not in a long time, anyway. In looking at the
>> documentation on automatic compilation, though, I see that the
>> behavior is not particularly well described. I'm adding the following
>> section to the "Automatic Compilation and Execution" topic:
>
>> ----
>> A Note on Files with Duplicate Names
>
>> If multiple .pro or .sav files with the same base name exist in the
>> directories
>> specified by the !PATH system variable, IDL will compile or restore
>> the first
>> file it finds, according to the following rules:
>
>> 1) IDL begins searching in the first directory specified by the
>> !PATH system variable.
>
>> 2) If a .pro file whose base name matches the routine specified
>> exists in the directory being searched, IDL compiles it, runs
>> the routine, and stops searching.
>
>> 3) If a .sav file whose base name matches the routine specified
>> exists in the directory being searched, IDL restores it, runs
>> the routine, and stops searching.
>
>> 4) IDL proceeds to the next directory specified by the !PATH
>> system variable and begins testing again with step 2.
>
>> 5) If no file whose base name matches the routine specified is
>> found in the directories specified by the !PATH system variable,
>> IDL issues an
>> Attempt to call undefined procedure/function
>> error, and halts execution.
>> ----
>
>> I hope that clears things up a bit,
>
>> Doug Dirks
>
> I think it would also be useful to include searching for system
> routines/DLM_PATH and files in the current directory in your steps.
>
> Mike
> --www.michaelgalloy.com
> Tech-X Corporation
> Software Developer II
Excellent point, Mike. IDL looks *first* in the current directory,
then starts in the directories
specified by !PATH. I'll add that to the updated thext.
Thanks,
Doug
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