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Re: Using contour procedure to extract specific regions [message #71937]

Wed, 28 July 2010 09:21

S. Murray
Messages: 6
Registered: July 2010

Junior Member

On Jul 28, 1:29 pm, David Fanning <n...@dfanning.com> wrote:
> S. Murray writes:
>> Then, I was reading this page:http://www.dfanning.com/map_tips/contoshape.html
>> , and from that gathered that my first 'step' should be:
>
>> contour, data,level=130,PATH_INFO=info, PATH_XY=xy, XSTYLE=1,
>> YSTYLE=1,/PATH_DATA_COORDS
>
>> But, after reading the 'contour.pro' explanation on the IDL webpage, I
>> still dont understand exactly what is contained within path_info etc
>> to know what to do next! How do I create image plots with these
>> outputs like the one on the webpage?
>
> I think I would take a different approach. Here are
> a couple of articles that describe how I handled
> a very similar problem in "blob analysis" and the
> programs I wrote to do the job:
>
> http://www.dfanning.com/ip_tips/boundary.html
> http://www.dfanning.com/ip_tips/blobanalysis.html
>
> Cheers,
>
> David
>
> --
> David Fanning, Ph.D.
> Fanning Software Consulting, Inc.
> Coyote's Guide to IDL Programming:http://www.dfanning.com/
> Sepore ma de ni thui. ("Perhaps thou speakest truth.")

Thanks very much for that, a much more understandable method! Works
perfectly.

For future searchers, I created a mask and then ran 'blob_analyser' on
my image. Then just selected which 'blob' I wanted using 'GetStats'
and plotting the stats.perimeter_pts arrays using 'plots'.

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[Message index]

		Re: Using contour procedure to extract specific regions By: S. Murray on Wed, 28 July 2010 09:21
		Re: Using contour procedure to extract specific regions By: David Fanning on Wed, 28 July 2010 05:29
		Re: Using contour procedure to extract specific regions By: S. Murray on Wed, 28 July 2010 04:52

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