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Re: equal lat long grid [message #48318 is a reply to message #48303]

Fri, 07 April 2006 13:37

greg michael
Messages: 163
Registered: January 2006

Senior Member

For each of your 241x721 map cells, you're checking every one of your 2
million points to see if it belongs - this is about 2e5 x 2e6 = 4e11
operations. Suppose you did it the other way around - for each of your
points you decide which cell it belongs to - then you have only 2e6
operations - should be of the order of 100,000 times faster, shouldn't
it?

regards,
Greg

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[Message index]

		Re: equal lat long grid By: glaciologist on Mon, 10 April 2006 11:56
		Re: equal lat long grid By: peter.albert@gmx.de on Sun, 09 April 2006 23:51
		Re: equal lat long grid By: greg michael on Fri, 07 April 2006 13:37
		Re: equal lat long grid By: Pawan on Thu, 27 April 2006 08:10
		Re: equal lat long grid By: Pawan on Fri, 28 April 2006 11:45

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