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Re: Automatic Structure Definition [message #15837 is a reply to message #13632]

Wed, 16 June 1999 00:00

J.D. Smith
Messages: 214
Registered: August 1996

Senior Member

"R.Bauer" wrote:
>
> Daniel Peduzzi wrote:
>
>> I recently spent quite a bit of time wondering why my automatic structure
>> definition files could not be seen by IDL. All attempts to instantiate the structure
>> in my calling program resulted in the error "attempt to call undefined procedure/function".
>>
>> As it turns out, the problem was that I had a capital letter in my filename containing
>> the structure definition procedure. Renaming it from abc_Struct__define.pro to
>> abc_struct__define.pro remedied the problem, even though all references still
>> contained the capital "S".
>>
>> Has anybody else experienced this problem? Or perhaps it is not a problem
>> at all, and I missed the explanation? This requirement is definitely not explained
>> in the "Automatic Structure Definition" section.
>>
>> Dan Peduzzi
>> peduzzi@mediaone.net
>
> This a problem using idl on unix.
> IDL on windows did not distinguish lower or upper cases.
>
> R.Bauer

It's the only reasonable solution though, since IDL is case-insensitive
and unix file systems are case-sensitive. How is IDL to know which file
to use? Either it adopts a given convention (e.g., all lower-case), or
it searches for all upper-lower permutations of the given name, which,
for abc_Struct__define.pro, includes 262144 possibilities. (Or it
becomes case-sensitive, which is a whole different kettle of fish).

A lesson learned: always use lower case for naming files containing IDL
routines under unix.

JD

--
J.D. Smith |*| WORK: (607) 255-5842
Cornell University Dept. of Astronomy |*| (607) 255-6263
304 Space Sciences Bldg. |*| FAX: (607) 255-5875
Ithaca, NY 14853 |*|

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[Message index]

		Automatic structure definition.. By: steinhh on Sun, 22 November 1998 00:00
		Re: Automatic Structure Definition By: Martin Schultz on Wed, 16 June 1999 00:00
		Re: Automatic Structure Definition By: Daniel Peduzzi on Wed, 16 June 1999 00:00
		Re: Automatic Structure Definition By: J.D. Smith on Wed, 16 June 1999 00:00
		Re: Automatic Structure Definition By: R.Bauer on Wed, 16 June 1999 00:00

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