search for: joincount

...For example, for the first matrix, fields are considered as neighbours if they are distant from 0 to 1000 meters from each others (independently on the variety). In the second matrix, I consider fields as neighbours if they are distant from 0 to 3000 m. Then I test the spatial organization with the joincount.test function in R. The help page says "The BB join count test for spatial autocorrelation using a spatial weights matrix in weights list form for testing whether same-colour joins occur more frequently than would be expected if the zones were labelled in a spatially random way." When I...

Hi, I have a dataset with x and y coordinates and in each point I have an identity of point, in some cases I can have more then one identity by point. My dataset is something like this: > x <- rep(c(1:4),4) > y <- rep(c(1:4),c(4,4,4,4)) > area1 <- sample(factor(rep(c("a","b","c","d"),4))) > area2 <-