| Re: IDL compatibility [message #23130 is a reply to message #23127] |
Wed, 10 January 2001 15:32  |
Mark Hadfield
Messages: 783
Registered: May 1995
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Senior Member |
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"Craig Markwardt" <craigmnet@cow.physics.wisc.edu> wrote in message
news:onpuhvhv1v.fsf@cow.physics.wisc.edu...
> [stuff about commonly-used IDL routines being made obsolete]
Just adding to Craig's message (with which I fully agree) perhaps not
everyone is aware of the !WARN system variable. From the documentation:
!WARN
A structure variable that causes IDL to print warnings to the console or
command log when obsolete IDL features are found at compile time. !WARN has
the following fields:
*****
** Structure !WARN, 3 tags, length=3:
OBS_ROUTINES BYTE 0
OBS_SYSVARS BYTE 0
PARENS BYTE 0
TRUNCATED_FILENAME BYTE 0
Setting each of the four fields to 1 (one) generates a warning for a
different type of obsolete code [remainder deleted]
*****
A routine is considered to be obsolete if it has "compile_opt OBSOLETE" in
the header or if its .pro file is in a directory named "obsolete".
By the way, I find it amusing that in if !warn.obs_sysvars is set in IDL
5.3, then several warning messages are produced in compiling XMANAGER! This
has been fixed in version 5.4.
---
Mark Hadfield
m.hadfield@niwa.cri.nz http://katipo.niwa.cri.nz/~hadfield/
National Institute for Water and Atmospheric Research
PO Box 14-901, Wellington, New Zealand
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