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Re: Q: contour levels from IDL [message #19525 is a reply to message #19298]

Mon, 20 March 2000 00:00

Mirko Vukovic
Messages: 124
Registered: January 1996

Senior Member

In article <MPG.13333170892ef001989a8a@news.frii.com>,
davidf@dfanning.com (David Fanning) wrote:
> Mirko Vukovic (mvukovic@taz.telusa.com) writes:
>
>> How can I get back from IDL the contour levels that it plotted up?
>>
>> ztick_get does not cut it, and I do not feel like using path_info
>> (I would need to invoke contour twice for that).
>>
>> The procedure should be able to handle IDL default choice,
>> usage of NLEVELS or LEVELS.
>
> If you have been following my advice, Mirko, you would
> NEVER be letting IDL choose its own contour levels. Thus,
> you would know ipso facto which levels you had. :-)
>
> In the absence of following good advice, I think
> there is nothing to do *but* call the contour command
> twice. :-(
>
> Cheers,
>
> David
>
??? I remember a note that nelvels does note guarantee the number of
levels, but not much else. Any other discussions you can refer me to?

My problem is how to choose intelligent levels. The only way I could
think of is to plot (2dplot) the z component of the data in a temp
(ram?) window, and observe the z ticks used by IDL, and use those as
contour levels.

As a side note, I now use path info, but that has problems, because you
may get several paths at the same contour level.

Mirko

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[Message index]

		Q: contour levels from IDL By: Mirko Vukovic on Fri, 10 March 2000 00:00
		Re: Q: contour levels from IDL By: Mirko Vukovic on Thu, 23 March 2000 00:00
		Re: Q: contour levels from IDL By: davidf on Wed, 22 March 2000 00:00
		Re: Q: contour levels from IDL By: hcp on Wed, 22 March 2000 00:00
		Re: Q: contour levels from IDL By: Martin Schultz on Wed, 22 March 2000 00:00
		Re: Q: contour levels from IDL By: davidf on Wed, 22 March 2000 00:00
		Re: Q: contour levels from IDL By: hcp on Wed, 22 March 2000 00:00
		Re: Q: contour levels from IDL By: davidf on Mon, 20 March 2000 00:00
		Re: Q: contour levels from IDL By: Mirko Vukovic on Mon, 20 March 2000 00:00

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