You can put the following at the beginning library(rgl) r3dDefaults$windowRect <- c(0,50, 700, 700) -- View this message in context: http://r.789695.n4.nabble.com/how-to-set-chart-output-size-in-rgl-surface3d-tp2066054p3309628.html Sent from the R help mailing list archive at Nabble.com.