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Re: Duplicate lat/long points [message #64853 is a reply to message #64690]

Thu, 22 January 2009 06:58

Jeremy Bailin
Messages: 618
Registered: April 2008

Senior Member

On Jan 21, 11:02 am, James McCreight <mccre...@gmail.com> wrote:
> that's basically re-inventing hist_nd, but sometimes it's nice to
> understand it from the ground up.

To some degree... but you can avoid the sparseness problems by just
working directly on the 1D mappings. I.e. you do a second mapping from
the 1D indices into their ordinals and then do a histogram of those,
which is guaranteed to be completely non-sparse.

-Jeremy.

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[Message index]

		Duplicate lat/long points By: hethomas on Wed, 14 January 2009 02:21
		Re: Duplicate lat/long points By: Jeremy Bailin on Thu, 15 January 2009 08:00
		Re: Duplicate lat/long points By: mccreigh on Fri, 16 January 2009 11:55
		Re: Duplicate lat/long points By: hethomas on Tue, 20 January 2009 05:57
		Re: Duplicate lat/long points By: Jeremy Bailin on Wed, 21 January 2009 07:14
		Re: Duplicate lat/long points By: Jeremy Bailin on Thu, 22 January 2009 06:58
		Re: Duplicate lat/long points By: mccreigh on Wed, 21 January 2009 08:02

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