-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Tuesday, July 01, 2003 3:09 AM To: [EMAIL PROTECTED] Subject: R-help Digest, Vol 5, Issue 1
At 18:48 30/06/2003, Martin Wegmann wrote: >hello, > >I want to do a test for spatial correlation. >I tried it with geary.test() but I don't understand the required input. >x= a numeric vector the same length as the neighbours list in listw (my >sampled data, I assume) >listw= a listw object created for example by nb2listw (well when I check >nb2listw() I get to "neighbours - an object of class nb" - but I couldn't >figure out, what nb is or how I create such a class > >with sp.mantel.mc {spdep} I have the same problem: listw created by nb2listw > >isn't there a more straight forward method ;-) to check for spatial >correlation? like x and y coordinates plus my sampled data? Check out the notes from a short course in Spatial Epidemiology by Best et al., at http://stats.ma.ic.ac.uk/~ngb30/. They have S-plus code to run Moran's I and Tango's test for spatial correlation that use disease counts in small areas and their X and Y coordinates. Daniel Smith, Dr.P.H. Environmental Health Investigations Branch California Department of Health Services 1515 Clay Street, Suite 1700 Oakland, CA 94612 ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help