Styling gridExtra's title and left labels

Hi,

You can use a grob instead of a text string, e.g

main = textGrob("Title goes here", gp=gpar(fontsize=24))

HTH,

b.
Hi,

I'm using the gridExtra package to combine some graphs like in the
arrangeGrob example. Each of the graphs has a title but they appear much
larger than the overall combined plot title and left axis label. Does anyone
know how I can control the style / size of the gridExtra labels?

library(gridExtra)
library(ggplot2)
dsamp <- diamonds[sample(nrow(diamonds), 1000), ]

p1 <- qplot(carat, price, data=dsamp, colour=clarity)
p2 <- qplot(carat, price, data=dsamp, colour=clarity, geom="path")

tmp <- ggplot_gtable(ggplot_build(p1))
leg <- which(sapply(tmp$grobs, function(x) x$name) == "guide-box")
legend <- tmp$grobs[[leg]]

grid.arrange(arrangeGrob(p1 + theme(legend.position="none") +
ggtitle("Scatter Plot"),
                                        p2 + theme(legend.position="none") +
ggtitle("Line Plot"),
                                        main ="this is a title",
                                        left = "This is my global Y-axis
title"), legend,
                     widths=unit.c(unit(1, "npc") - legend$width,
legend$width), nrow=1)

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Styling gridExtra's title and left labels

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