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Re: Keyword abbreviation ambiguities [message #38921 is a reply to message #38920]

Mon, 05 April 2004 06:10

R.Bauer
Messages: 1424
Registered: November 1998

Senior Member

mwvogel wrote:
> Dear All/Craig,
>
>
>>> One way to overcome this would be to use the _EXTRA keyword. One of many
>>> options would be
>>>
>>> function testfunc, _EXTRA=e
>>
>> ...
>>
>> Greetings, it's true that one can use the _EXTRA keyword explicitly,
>> i.e. by directly passing a structure through _EXTRA. However, the
>> _EXTRA keyword processing still doesn't allow us to do the desired
>> thing, which is:
>>
>> testfunc, title='a', title1='b'
>
>
> Using the code below I get the following on my system
> IDL> print, !VERSION
> { x86 Win32 Windows 5.4 Sep 25 2000 32 64}
> IDL> help, testfunc( title='a', title1='b')
> ab
> <Expression> INT = 0
>
> I feel this code should work cross platform, but have not tested it. Of
> course Craig Markwardt and M. Katz were right pointing out that the explicit
> definition as originally requested will not work.
>
> code :
> function testfunc, _EXTRA=e
> ;title=t,
> ;title1=t1
> FOR i=0,N_TAGS(e)-1 DO $
> CASE (TAG_NAMES(e))[i] OF
> 'TITLE' : t = e.title
> 'TITLE1': t1 = e.title1
> ENDCASE
> print, t, t1
> return, 0
> end
>
>

This does only work if the keywords are completly written.
It would be bad to be forced to do it.

If you like to have different titles it is better to use different names
,e.g. legend_title, title, page_title.

You could group by a prefix like legend_ a whole bunch of keywords which
then could be extracted from the _extra structure easily and send to a
specific routine as e.g. title and so on.

I am using in this case extract_extra() from our library.

result=extract_extra(extra,'legend_*')

regards
Reimar

--
Reimar Bauer

Institut fuer Stratosphaerische Chemie (ICG-I)
Forschungszentrum Juelich
email: R.Bauer@fz-juelich.de
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[Message index]

		Re: Keyword abbreviation ambiguities By: R.Bauer on Mon, 05 April 2004 06:38
		Re: Keyword abbreviation ambiguities By: R.Bauer on Mon, 05 April 2004 06:10
		Re: Keyword abbreviation ambiguities By: mwvogel on Mon, 05 April 2004 04:47
		Re: Keyword abbreviation ambiguities By: Craig Markwardt on Mon, 05 April 2004 02:47
		Re: Keyword abbreviation ambiguities By: mwvogel on Mon, 05 April 2004 01:48
		Re: Keyword abbreviation ambiguities By: MKatz843 on Sun, 04 April 2004 18:10
		Re: Keyword abbreviation ambiguities By: Craig Markwardt on Sun, 04 April 2004 08:07

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