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Re: match_2d [message #66247 is a reply to message #66220]

Mon, 27 April 2009 12:06

JDS
Messages: 94
Registered: March 2009

Member

> I'm pretty sure there's a HIST_ND-based algorithm of doing this
> similar to MATCH_2D but taking spherical trig into account, but I
> don't have the patience to figure it out.

That would be challenging for the whole sphere, since histogram can
only evaluate monotonic coordinate fields. You can always first remap
your coordinates using some projection which puts the ill-behaved
parts (nominally, the poles) far away, and preserves distance
locally. For example, if you have a small field (a degree or so) near
the pole, this would be a nice way of solving the converging longitude
lines issues. But generally? Sounds tough.

JD

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[Message index]

		match_2d By: vino on Mon, 20 April 2009 06:40
		Re: match_2d By: Jeremy Bailin on Tue, 28 April 2009 19:44
		Re: match_2d By: JDS on Wed, 29 April 2009 13:29
		Re: match_2d By: JDS on Mon, 27 April 2009 12:06
		Re: match_2d By: vino on Mon, 27 April 2009 03:53
		Re: match_2d By: Jeremy Bailin on Wed, 29 April 2009 17:00
		Re: match_2d By: Jeremy Bailin on Fri, 08 May 2009 22:02
		Re: match_2d By: Jeremy Bailin on Wed, 29 April 2009 16:30
		Re: match_2d By: wlandsman on Thu, 06 May 2010 11:11
		Re: match_2d By: d.poreh on Fri, 07 May 2010 05:06
		Re: match_2d By: d.poreh on Thu, 06 May 2010 05:25
		Re: match_2d By: vino on Thu, 06 May 2010 04:27
		Re: match_2d By: d.poreh on Fri, 07 May 2010 05:55
		Re: match_2d By: Jeremy Bailin on Fri, 07 May 2010 05:30

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