| RESOLVE_ROUTINE not finding MEDIAN function? [message #81101] |
Fri, 17 August 2012 08:10  |
John Correira
Messages: 25
Registered: August 2011
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Junior Member |
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Am I doing something wrong here? I want to use ROUTINE_INFO on median
(well it could be an arbitrary function name, but median is causing a
problem), so I use RESOLVE_ROUTINE first to make sure it is compiled,
but it is not finding median ??? Must be something obvious I'm missing.
Thanks,
John
%%%%%%%%%%%%%%%%%%%%%%%
IDL> resolve_routine, 'median', /EITHER, /COMPILE_FULL_FILE
% Attempt to call undefined procedure/function: 'MEDIAN'.
% Execution halted at: $MAIN$
IDL> print, median([1,2,3,4,5,6,7])
4.00000
IDL> resolve_routine, 'mean', /EITHER, /COMPILE_FULL_FILE
% Compiled module: MEAN.
IDL> resolve_routine, 'stddev', /EITHER, /COMPILE_FULL_FILE
% Compiled module: STDDEV.
IDL> resolve_routine, 'meanabsdev', /EITHER, /COMPILE_FULL_FILE
% Compiled module: MEANABSDEV.
IDL> resolve_routine, 'median', /EITHER, /COMPILE_FULL_FILE
% Attempt to call undefined procedure/function: 'MEDIAN'.
% Execution halted at: $MAIN$
IDL> help, !version, /STRUCTURES
** Structure !VERSION, 8 tags, length=104, data length=100:
ARCH STRING 'x86_64'
OS STRING 'linux'
OS_FAMILY STRING 'unix'
OS_NAME STRING 'linux'
RELEASE STRING '7.1'
BUILD_DATE STRING 'Apr 21 2009'
MEMORY_BITS INT 64
FILE_OFFSET_BITS
INT 64
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| Re: RESOLVE_ROUTINE not finding MEDIAN function? [message #81196 is a reply to message #81101] |
Fri, 17 August 2012 09:14  |
John Correira
Messages: 25
Registered: August 2011
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Junior Member |
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On 08/17/2012 11:59 AM, David Fanning wrote:
>
> For system routines, you really have only two choices.
> (1) Read the documentation and hardcode the information you
> need into your program, or (2) call the system routine and
> CATCH any program errors and handle it in whatever way is
> appropriate.
>
> Cheers,
>
> David
>
>
>
Thanks David.
John
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| Re: RESOLVE_ROUTINE not finding MEDIAN function? [message #81197 is a reply to message #81101] |
Fri, 17 August 2012 08:59 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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John Correira writes:
> So then I can't use ROUTINE_INFO on it?
Right. :-)
> IDL> info = ROUTINE_INFO('median',/FUNCTIONS,/PARAMETERS)
> % Attempt to call undefined procedure/function: 'MEDIAN'.
> % Execution halted at: $MAIN$
>
> I'm writing a procedure that you pass a function name to as a string
> parameter, and then that function is used later on in the procedure. I'm
> trying to include a check for cases where the caller includes keywords
> but the function does not accept keywords, most likely a user written
> function. The most obvious way seems to be ROUTINE_INFO, i.e.
>
> takeskeywords =
> ((ROUTINE_INFO(functname,/FUNCTIONS,/PARAMETERS)).NUM_KW_ARG S GT 0)
>
>
> but it seems as if that does not work for system routines. Any other
> suggestions?
For system routines, you really have only two choices.
(1) Read the documentation and hardcode the information you
need into your program, or (2) call the system routine and
CATCH any program errors and handle it in whatever way is
appropriate.
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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| Re: RESOLVE_ROUTINE not finding MEDIAN function? [message #81199 is a reply to message #81101] |
Fri, 17 August 2012 08:39 |
John Correira
Messages: 25
Registered: August 2011
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Junior Member |
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On 08/17/2012 11:19 AM, David Fanning wrote:
> John Correira writes:
>
>> Am I doing something wrong here? I want to use ROUTINE_INFO on median
>> (well it could be an arbitrary function name, but median is causing a
>> problem), so I use RESOLVE_ROUTINE first to make sure it is compiled,
>> but it is not finding median ??? Must be something obvious I'm missing.
>
> MEDIAN is a system routine. It doesn't need to be compiled. :-)
>
> Cheers,
>
> David
>
>
>
So then I can't use ROUTINE_INFO on it?
IDL> info = ROUTINE_INFO('median',/FUNCTIONS,/PARAMETERS)
% Attempt to call undefined procedure/function: 'MEDIAN'.
% Execution halted at: $MAIN$
I'm writing a procedure that you pass a function name to as a string
parameter, and then that function is used later on in the procedure. I'm
trying to include a check for cases where the caller includes keywords
but the function does not accept keywords, most likely a user written
function. The most obvious way seems to be ROUTINE_INFO, i.e.
takeskeywords =
((ROUTINE_INFO(functname,/FUNCTIONS,/PARAMETERS)).NUM_KW_ARG S GT 0)
but it seems as if that does not work for system routines. Any other
suggestions?
Thanks,
John
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| Re: RESOLVE_ROUTINE not finding MEDIAN function? [message #81200 is a reply to message #81101] |
Fri, 17 August 2012 08:19 |
David Fanning
Messages: 11724
Registered: August 2001
|
Senior Member |
|
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John Correira writes:
> Am I doing something wrong here? I want to use ROUTINE_INFO on median
> (well it could be an arbitrary function name, but median is causing a
> problem), so I use RESOLVE_ROUTINE first to make sure it is compiled,
> but it is not finding median ??? Must be something obvious I'm missing.
MEDIAN is a system routine. It doesn't need to be compiled. :-)
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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