Gianni, Try my.Area.tot <- sapply(fileNames, raster) # this is equivalent to your for loop b <- brick(my.Area.tot) Etienne -- View this message in context: http://r-sig-geo.2731867.n2.nabble.com/help-to-create-a-raster-BRICK-from-a-list-tp7266815p7274487.html Sent from the R-sig-geo mailing list archive at Nabble.com.