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Re: IDL Save Files: A Journey into Craig's World [message #38916 is a reply to message #38915] Mon, 05 April 2004 09:02 Go to previous messageGo to previous message
Michael Wallace is currently offline  Michael Wallace
Messages: 409
Registered: December 2003
Senior Member
> The variable-type descriptors are not full fledged records. What you
> are really asking is how the descriptors appear within a single
> variable's record. What you will find is that a structure descriptor
> starts with a value of "9". Then, if the structure contains any
> arrays or structures within itself, then descriptors for those follow,
> first arrays, then structures. For your problem, you would see the
> following byte stream:
> STRUCT_DESCR (N tags, including M arrays)
> ARRAY_DESCR (1)
> ...
> ARRAY_DESCR (M)

Ah. Okay. Yes, that's what I'm really asking.


> Do you have any reason to believe that IDL 6 save file formats have
> changed?

No. But I was curious if there were any differences. I'm working on a
project where one of my requirements is to support IDL save files (much
to my chagrin) as an output. However, I have no control over what
version of IDL folks are using. I will always be using the latest
version of IDL, but who knows what kind of incompatibilities may arise
since the format of save files could change at any time. RSI has been
known to change things without warning before...
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