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Old 04-11-2008, 11:29 AM
aiolosply aiolosply is offline
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Question spatial analysis tools

Hi people,

i am currently trying to do the following:
- semivariogram(global):


where: g = semivariogram;
h = separation distance between data points;
n = number of data pairs separated by separation distance, h;
Z = value of the spatially distributed phenomena; and
x = location of an individual data point.

- Moran's I (local): http://people.virginia.edu/~fn9r/ant...tureSlides.pdf

- Gi* (local): http://people.virginia.edu/~fn9r/ant...tureSlides.pdf

I have already coded the parts where the program reads an ASCII file and want to incorporate the above statistical analysis tools in order to present the results on a picbox...my problem is the algorithm..

if anyone has some experience on the above plz make your suggestions. I have found the following url where the above are coded in IML which I dont follow.Probably this would be helpful for an experienced user who could 'translate' it: http://people.virginia.edu/~fn9r/anth589b/LISA.sas
regards
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Old 04-15-2008, 01:57 PM
aiolosply aiolosply is offline
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Default Re: spatial analysis tools

isnt there anyone with at least a minor suggestion?
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Old 04-16-2008, 02:34 PM
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Default Re: spatial analysis tools

You see, we're programmers, not maths geniuses (well, some of us are, but still, that's a long question). However, if you give us the exact calculation, we can tell you the code for it.
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Old 04-16-2008, 03:07 PM
aiolosply aiolosply is offline
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Default Re: spatial analysis tools

I understand Xav, I just wanted to find a person with some experience in these stats tools in order for it to be easier to implement..

I will send an update soon
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Old 04-16-2008, 03:20 PM
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Default Re: spatial analysis tools

Righteoh... what does the algorithm do, anyway?
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