i have a grid of points at regular intervals (taken from a raster). I want to create a listw matrix based on a queens case senario, like this
1 1 1 1 1 1 1 1 1 and also like this 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 and so on I want it to work with localG from package spdep: localG(x, listw, zero.policy=NULL, spChk=NULL) I can use nb2listw, I also want the matrix to use the observation value so the Gstar optioon, I quote: If the neighbours member of listw has a "self.included" attribute set to TRUE, the Gstar variant, including the self-weight wii > 0, is calculated and returned. The returned vector will have a "gstari" attribute set to TRUE. Self-weights can be included by using the include.self function in the spweights package before converting the neighbour list to a spatial weights list with nb2listw as shown below in the example. Any help is much appreciated, I am slowly getting there! Thanks Gary -- View this message in context: http://r.789695.n4.nabble.com/contiguity-matrix-queens-case-tp3022184p3022184.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
