Maybe like this: X.ts <- matrix(rnorm(4000),1000,4) par(mfrow=c(2,2)) apply(X.ts, 2, plot.ts, plot.type=c("single")) or apply(X.ts, 2, ts.plot) HTH Thomas>Hi,>How can I force a plot.ts to draw a 2x2 plot matrix instead of 4x1 ?>Regards>EJ______________________________________________ R-help at stat.math.ethz.ch mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help