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Re: binning a point clouds in the xy plane [message #87012 is a reply to message #87011]

Thu, 19 December 2013 14:13

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Nafiseh Masoumzadeh writes:

> I have three vectors, x, y, z having same size which I want to bin x and y and have average value of z corresponding to bin. and then get resample data in point clouds as an output.
>
> rebin or reform are supposed to do it, but I couldn't find how, however I've studied http://www.idlcoyote.com/tips/rebin_magic.html. The example in this link for me it is more like to mask your data but I want to have an avarage of one of my vector z in bin x-y plane

I would use HIST_ND with the REVERSE_INDICES keyword to bin the data in
X and Y. Then, I would loop through each bin and with the output from
REVERSE_INDICES find the Z values falling in each bin and average those.

You can find NIST_ND in the Public directory of the Coyote Library, and
you might find cgReverseIndices handy for returning the indices of the Z
values in each bin:

http://www.idlcoyote.com/idldoc/cg/cgreverseindices.html

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thue. ("Perhaps thou speakest truth.")

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[Message index]

		binning a point clouds in the xy plane By: Nafiseh Masoumzadeh on Thu, 19 December 2013 13:53
		Re: binning a point clouds in the xy plane By: David Fanning on Thu, 19 December 2013 14:13
		Re: binning a point clouds in the xy plane By: Nafiseh Masoumzadeh on Thu, 19 December 2013 16:11
		Re: binning a point clouds in the xy plane By: David Fanning on Thu, 19 December 2013 16:20
		Re: binning a point clouds in the xy plane By: Nafiseh Masoumzadeh on Fri, 20 December 2013 15:03
		Re: binning a point clouds in the xy plane By: David Fanning on Fri, 20 December 2013 16:06
		Re: binning a point clouds in the xy plane By: Nafiseh Masoumzadeh on Thu, 23 January 2014 07:48
		Re: binning a point clouds in the xy plane By: Nafiseh Masoumzadeh on Fri, 20 December 2013 15:01

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