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Re: Point within country boundary [message #87336 is a reply to message #87335]

Sat, 25 January 2014 06:14

Fabzi
Messages: 305
Registered: July 2010

Senior Member

On 25.01.2014 14:36, David Fanning wrote:
> I'm not sure that you can even*think* about going for coffee in the
> time you save, let alone going to get a cup.;-)

well, there is a factor of 1300 between ContainPoints (brute force) and
ComputeMask, and a factor of 150 betwen ContainPoints (brute force) and
the "smart" ContainPoints (when only the points that passed the mask
test are checked).

I do this kind of operation quite often with large images and complex
ROI groups (see for example the size of the shapes of the last Randolph
Glacier Inventory). Be sure I am glad to have found this trick ;-)

Cheers

Fabien

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[Message index]

		Point within country boundary By: Matt[3] on Fri, 24 January 2014 10:48
		Re: Point within country boundary By: David Fanning on Fri, 24 January 2014 11:08
		Re: Point within country boundary By: Phillip Bitzer on Fri, 24 January 2014 11:43
		Re: Point within country boundary By: David Fanning on Fri, 24 January 2014 12:06
		Re: Point within country boundary By: Phillip Bitzer on Fri, 24 January 2014 13:22
		Re: Point within country boundary By: David Fanning on Fri, 24 January 2014 13:36
		Re: Point within country boundary By: Fabzi on Sat, 25 January 2014 04:54
		Re: Point within country boundary By: David Fanning on Sat, 25 January 2014 05:36
		Re: Point within country boundary By: Fabzi on Sat, 25 January 2014 06:14
		Re: Point within country boundary By: Matt[3] on Tue, 28 January 2014 03:35
		Re: Point within country boundary By: Fabzi on Tue, 28 January 2014 05:01
		Re: Point within country boundary By: Fabzi on Tue, 28 January 2014 07:05
		Re: Point within country boundary By: David Fanning on Tue, 28 January 2014 07:15
		Re: Point within country boundary By: David Fanning on Tue, 28 January 2014 07:20
		Re: Point within country boundary By: David Fanning on Tue, 28 January 2014 08:08
		Re: Point within country boundary By: iqbalhabibie0684 on Wed, 22 February 2017 01:18
		Re: Point within country boundary By: Helder Marchetto on Wed, 22 February 2017 01:41

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