Carlos, what you see are the lattice default settings; use trellis.par.get/set to get and change them: library(gstat) # requires lattice data(meuse) trellis.par.set("background", list(col="#ffffff")) trellis.par.set("plot.symbol", list(cex=1,col="#000000",font=1,pch="+")) plot(variogram(zinc~1,~x+y,meuse)) for more help, try: ?Lattice ?trellis.par.set Please use a more descriptive subject, next time. Best regards, -- Edzer