I have three plots and I try to combine them with grid.arrange. The last plot should have a smaller height than the first two plots and all the plots should have the same width.
A working example:
p1 <- qplot(mpg, wt, data=mtcars)
p2 <- p1
p3 <- p1 + theme(axis.text.y=element_blank(), axis.title.y=element_blank())
grid.arrange(arrangeGrob(p1,p2, ncol=1, nrow=2),
arrangeGrob(p3, ncol=1, nrow=1), heights=c(4,1))
Here, the last plot has a larger width than the first two. In my real data, even if I keep the text and the title on the y-axis, I still have a different width for the third plot.
I tried to add "widths":
grid.arrange(arrangeGrob(p1,p2, ncol=1, nrow=2),
arrangeGrob(p3, ncol=1, nrow=1), heights=c(4,1), widths=c(2,1))
But it turns into a two column plot...
I also tried another code:
p1 <- ggplotGrob(p1)
p2 <- ggplotGrob(p2)
p3 <- ggplotGrob(p3)
#
stripT <- subset(p2$layout, grepl("spacer", p2$layout$name))
p3 <- p3[-stripT$t, ]
grid.draw(rbind(p1, p2, p3, size = "first"))
I have the same widths but now I don't know how to change the heights...
Well, can someone help me to combine both the height and width aspects for a final plot?
Try plot_grid
from the cowplot
package:
library(ggplot2)
library(gridExtra)
library(cowplot)
p1 <- qplot(mpg, wt, data=mtcars)
p2 <- p1
p3 <- p1 + theme(axis.text.y=element_blank(), axis.title.y=element_blank())
plot_grid(p1, p2, p3, align = "v", nrow = 3, rel_heights = c(1/4, 1/4, 1/2))