[R] How to do the significant test on Local Moran's I

[Roger Bivand]

On Sat, 27 Mar 2004, [gb2312] Louis wrote:

> Dear Danlin Yu:
>  I read your message at
> https://stat.ethz.ch/pipermail/r-help/2003-April/030754.html. Actually,
> I have a question about significant of Local Moran I too. based on it's
> function:
> 
>                               Ii = zi [¦²j wijzj],
> 
> I wonder how can I calculate it's z-value.

(this refers to function localmoran() in package spdep - maybe it might 
help to mention this?)

?localmoran

says that the function returns a matrix with four column. Column 4 are the 
z-values (which are (col1 - col2)/sqrt(col3)). How you interpret this will 
depend on how many multiple tests you want to do on the same data.

> 
> Any suggest will be greatly appreciated.
> 
> 
> 
> Louis Zhang
>  
> Dept of Geography and Planning
> The Univ. of Toledo
> 
> 
> 
> ---------------------------------
> 
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-- 
Roger Bivand
Economic Geography Section, Department of Economics, Norwegian School of
Economics and Business Administration, Breiviksveien 40, N-5045 Bergen,
Norway. voice: +47 55 95 93 55; fax +47 55 95 93 93
e-mail: Roger.Bivand at nhh.no