Lattice: multiple plots in one window?

Question

I'm trying to put multiple lattice plots in one window using levelplot by setting par(mfrow=c(2,1)) but it seems to be ignoring this.

Is there a particular function for setting multiple plots in lattice?

Answer 1

The 'lattice' package is built on the grid package and attaches its namespace when 'lattice' loaded. However, in order to use the grid.layout function, you need to explicitly load() pkg::grid. The other alternative, that is probably easier, is the grid.arrange function in pkg::gridExtra:

 install.packages("gridExtra")  require(gridExtra) # also loads grid  require(lattice)  x <- seq(pi/4, 5 * pi, length.out = 100)  y <- seq(pi/4, 5 * pi, length.out = 100)  r <- as.vector(sqrt(outer(x^2, y^2, "+")))   grid <- expand.grid(x=x, y=y)  grid$z <- cos(r^2) * exp(-r/(pi^3))  plot1 <- levelplot(z~x*y, grid, cuts = 50, scales=list(log="e"), xlab="",            ylab="", main="Weird Function", sub="with log scales",            colorkey = FALSE, region = TRUE)   plot2 <- levelplot(z~x*y, grid, cuts = 50, scales=list(log="e"), xlab="",            ylab="", main="Weird Function", sub="with log scales",            colorkey = FALSE, region = TRUE)  grid.arrange(plot1,plot2, ncol=2)