[R] spatial clusters

Dear all, Roger, Georg, thanks a lot for your suggestions. I am working in R (time series…), but I am truly beginner in spatial statistics. How to create a shapefiles including my data about some socio-demographic indicators (7), for about 30 countries around the world? I know it is a stupid

[R] spatial clusters

Dear all, I am looking for a clustering method usefull to classify the countries in some clusters taking account of: a) the geographical distance (in km) between countries and b) of some macroeconomic indicators (gdp, life expectancy...). Are there some packages in R usefull for this? Thanks

[R] arfima model

Hello, I am trying to estimate an arfima model with R. fracdiff(rdu, nar = 2, nma = 2, ar = rep(NA, max(nar, 1)), ma = rep(NA, max(nma, 1)), dtol = NULL, drange = c(0, 0.5), h, M = 100). The procedure give the message: Error in ar[is.na(ar)] <- 0 : object "nar" not found What can I do? With