| Re: 'secret' function [message #18613] |
Tue, 18 January 2000 00:00 |
R.Bauer
Messages: 1424
Registered: November 1998
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Senior Member |
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John Keck wrote:
>
> I was trying to get from within a procedure a list of the system
> variables when I stumbled across the GETHELP function that uses the
> ROUTINE_NAMES function. The latter is not described in the on-line help
> or in the printed reference, so the extent of my knowledge is how the
> function is used in GETHELP.
>
> Does any one have a complete description for the use of ROUTINE_NAMES?
> If not, does anyone know how to list system variables and structures
> with it?
>
> Also, are there any other undocumented functions or procedures in IDL?
>
> Thanks,
>
> John
I am using this function and I was told by someone of RSI:
ROUTINE_NAMES is an undocumented command. It is highly
recommended that you not use it in any code which you plan
to run in future versions of IDL. Its argument and keyword lists
may change, or it may disappear completely.
Use it at your own risk only in code which you won't mind changing
again in the future.
Reimar
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| Re: 'secret' function [message #18615 is a reply to message #18613] |
Tue, 18 January 2000 00:00  |
James Tappin
Messages: 54
Registered: December 1995
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Member |
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John Keck wrote:
>> Does any one have a complete description for the use of ROUTINE_NAMES?
> If not, does anyone know how to list system variables and structures
> with it?
The following is a list of the keywords to routine_names, most seem to be
switch keywords, and in many make use of 1 or 2 arguments.
argument: list the arguments of the given routine (in the current call
stack?)
comm: list the compiled routines (?) [default action?]
functions: list the compiled functions.
f_parameters: list the parameters of a function?
f_variables: list variables in a function
fetch: Select the level from which to fetch the value of a variable
Level: return the current call level
procedures: list the compiled procedures
p_parameters: list the parameters of a procedure?
p_variables: list variables in a procedure
s: Set variable
s_procedures: list intrinsic procedures
s_functions: list intrinsic functions
unresolved: list unresolved references
variables: list defined variables
--
+------------------------+-------------------------------+-- -------+
| James Tappin | School of Physics & Astronomy | O__ |
| sjt@star.sr.bham.ac.uk | University of Birmingham | -- \/` |
| Ph: 0121-414-6462. Fax: 0121-414-3722 | |
+--------------------------------------------------------+-- -------+
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| Re: 'secret' function [message #18616 is a reply to message #18613] |
Tue, 18 January 2000 00:00 |
Martin Schultz
Messages: 515
Registered: August 1997
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Senior Member |
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David Fanning wrote:
>
> John Keck (jwk@phys.columbia.edu) writes:
>
>> Also, are there any other undocumented functions or procedures in IDL?
>
Just take a look at my previous post on system routines: use
routine_info to get
a list of all procedures and functions built into IDL. Then print out
the alphabetical listing of procedures from the online help and
differentiate the two. Everything not in the online help is undocumented
(obviously ;-), while everything not listed by routine_info should be
found in the RSI idl../lib directory.
Just slightly more efficient than starting with aaaa ;-)
Martin
--
[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[ [[[[[[[
[[ Dr. Martin Schultz Max-Planck-Institut fuer Meteorologie [[
[[ Bundesstr. 55, 20146 Hamburg [[
[[ phone: +49 40 41173-308 [[
[[ fax: +49 40 41173-298 [[
[[ martin.schultz@dkrz.de [[
[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[ [[[[[[[
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| Re: 'secret' function [message #18619 is a reply to message #18613] |
Mon, 17 January 2000 00:00 |
davidf
Messages: 2866
Registered: September 1996
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Senior Member |
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John Keck (jwk@phys.columbia.edu) writes:
> Does any one have a complete description for the use of ROUTINE_NAMES?
> If not, does anyone know how to list system variables and structures
> with it?
I don't know anything about ROUTINE_NAMES (expect that it is probably
not a good idea to use it if it is undocumented), but to get help
on system variables you can do this:
IDL> Help, /System_Variables
If you want help on a structure, you can do something like this:
IDL> Help, !Version, /Structure
> Also, are there any other undocumented functions or procedures in IDL?
I once spent a three days using a dictionary to find all the
undocumented procedures and functions that started with the letter A:
IDL> aardvark
IDL> aardwolf
IDL> aargu
IDL> aba
Etc.
I didn't find any, but whose to say they don't exist. I got half-way
through running through the whole list as functions before I
decided to leave the rest of the dictionary for a graduate
student project. :-)
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438 E-Mail: davidf@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155
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