Hi, Thank Michael, I resolved my problem with your help. the projections of the layers were the same. Ok for reading the posting guide and ..... R sig geo list. -- View this message in context: http://r.789695.n4.nabble.com/To-overlay-my-raster-and-its-boundary-tp4493705p4494900.html Sent from the R help mailing list archive at Nabble.com.