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aimin
2009 Jun 06
1
large numbers of observations using ME() of spdep
...gram in
C and call it in R with the command system(); 2)use muliR. However, I
do not know how to use these tools. I do not understand exactely why
the calculations are so slow and I do know know how to write a program
in C...
I am using Ubuntu 9.04 and R version 2.8.1 .
The code in R is a fallows:
taimin.xy = taimin[c("dy", "dx")];
coordinates(taimin.xy) <- ~dy+dx; #dy, dx, name of the respective
coordinate columns
coords<-coordinates(taimin.xy);
library(spdep);
TaiminGabrielGraph<-gabrielneigh(coords, nnmult = 12);
tai.gab.nb<-graph2nb(TaiminGabrielGraph,sym=TRUE);...