格子:在一个窗口中有多个地块? [英] Lattice: multiple plots in one window?

问题描述

我试图通过设置par(mfrow=c(2,1))来使用levelplot在一个窗口中放置多个晶格图，但似乎忽略了这一点.

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.

在lattice中是否有用于设置多个图的特定功能?

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

推荐答案

'lattice'包建立在网格包上，并在加载'lattice'时附加其名称空间.但是，为了使用grid.layout函数，您需要显式地load() pkg :: grid.另一种可能更容易的选择是pkg :: gridExtra:

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)

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