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Re: Finding the Top Two Most Common Coordinates in a Multi-Dimensional Array [message #61748 is a reply to message #61729]

Tue, 29 July 2008 08:50

Jeremy Bailin
Messages: 618
Registered: April 2008

Senior Member

On Jul 29, 2:32 am, Brian Larsen <balar...@gmail.com> wrote:
> We do need some more information but this is just screaming for
> histogram. Have a read throughhttp://www.dfanning.com/tips/histogram_tutorial.html
> . Using histogram to see which x's are common you can step through
> the reverse_indices and see which y's are then common. There is
> probably a more graceful way however.
>
> Cheers,
>
> Brian
>
> ------------------------------------------------------------ --------------
> Brian Larsen
> Boston University
> Center for Space Physicshttp://people.bu.edu/balarsen/Home/IDL

In particular, if you're dealing with integers that don't span too big
a range, use HIST_2D and find the maximum element. If you've got
floats or a wide range, use UNIQ to turn each into an integer on a
small range first.

-Jeremy.

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[Message index]

		Re: Finding the Top Two Most Common Coordinates in a Multi-Dimensional Array By: Juggernaut on Wed, 30 July 2008 05:35
		Re: Finding the Top Two Most Common Coordinates in a Multi-Dimensional Array By: Juggernaut on Wed, 30 July 2008 04:54
		Re: Finding the Top Two Most Common Coordinates in a Multi-Dimensional Array By: Jeremy Bailin on Tue, 29 July 2008 08:50
		Re: Finding the Top Two Most Common Coordinates in a Multi-Dimensional Array By: Brian Larsen on Mon, 28 July 2008 23:32
		Re: Finding the Top Two Most Common Coordinates in a Multi-Dimensional Array By: russell.grew on Mon, 28 July 2008 17:43
		Re: Finding the Top Two Most Common Coordinates in a Multi-Dimensional Array By: Jeremy Bailin on Fri, 01 August 2008 04:02
		Re: Finding the Top Two Most Common Coordinates in a Multi-Dimensional Array By: Juggernaut on Tue, 05 August 2008 07:14
		Re: Finding the Top Two Most Common Coordinates in a Multi-Dimensional Array By: Juggernaut on Thu, 31 July 2008 07:50
		Re: Finding the Top Two Most Common Coordinates in a Multi-Dimensional Array By: Juggernaut on Thu, 07 August 2008 06:21
		Re: Finding the Top Two Most Common Coordinates in a Multi-Dimensional Array By: Jeremy Bailin on Wed, 06 August 2008 04:28
		Re: Finding the Top Two Most Common Coordinates in a Multi-Dimensional Array By: Jeremy Bailin on Thu, 31 July 2008 04:37

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