Re: GEOSTATS: Re:Moran's I statistic
- See Cliff and Ord (1981): Spatial Processes: Models and Applications
for a discussion of distributional assumptions and significance
testing for Moran's I.
Ecosystem Science and Conservation Division
College of Forest Resources, Box 352100
University of Washington
Seattle, WA 98195
On Wed, 26 Nov 1997, Yoshiro Nagao wrote:
> My posting must irritate some of
> geostaticians, as I am nothing more than a layman
> in this field, but...can I say?
> LJOHNSON@... (Lucinda B. Johnson) sama said:
> >Can someone tell me what software I can use to calculate Moran's I statistic?
> Moran's I is a index to show the degree of spatial
> clustering(-1: negative clustering 0:no clustering 1:positive clustering),
> isn't it?
> Moran's formula is so simple that it is easy to make a programme in any language
> even without any GIS package.( Actually Moran proposed it in 1950!
> for general or logical distance, not specific for spatial distance. )
> There must be some freewares in public domain.
> I made one small programme myself, but do not know
> how to prove significance of spatial clustering.
> I hear Moran himself/herself also tested the significance by Z test.
> If you want some GIS software for Moran's I,
> one which provides significance value(p val) is recommended.
> reference: Moran P. 1950 Notes on continuous stochastic phenomenon
> Biometrica 37, 17-23 .... which I cannot find in medical schools of
> my country!!! I would like to learn abroad.
> By the way, which university do you recommend to
> learn biostatistics, together with spatial analysis/remote sensing?
> >For Geoeas users: is Moran's I statistic reported in the Vario Results
> >Screen anywhere?
> What are Geoeas and Vario Results Screen?
> Nagao Yoshiro
> International Centre for Medical Research
> Kobe University
> *To post a message to the list, send it to ai-geostats@....
> *As a general service to list users, please remember to post a summary
> of any useful responses to your questions.
> *To unsubscribe, send email to majordomo@... with no subject and
> "unsubscribe ai-geostats" in the message body.
> DO NOT SEND Subscribe/Unsubscribe requests to the list!
*To post a message to the list, send it to ai-geostats@....
*As a general service to list users, please remember to post a summary
of any useful responses to your questions.
*To unsubscribe, send email to majordomo@... with no subject and
"unsubscribe ai-geostats" in the message body.
DO NOT SEND Subscribe/Unsubscribe requests to the list!