CODEWITHSUNDEEP
rggplot2gridextra
moadeep
moadeep

Reputation: 4108

changing title in multiplot ggplot2 using grid.arrange

I have managed to make a 2x2 plot using grid.arrange:

library(gridExtra)
grid.arrange(p1,p3,p2,p4, ncol=2, nrow=2, top = "Daily QC: Blue")

The main title of this multiplot is very small. Is there a way to change the title text size and font.

Upvotes: 64

Views: 115946

Answers (2)

MBorg
MBorg

Reputation: 1454

Due to changes in both packages grid and gridExtra, the current answer is outdated. Library package grid is also required to use textGrob and gpar.

The new code should include both packages:

library(grid)
library(gridExtra)
grid.arrange(p1,p3,p2,p4, ncol=2, nrow=2,
     top = textGrob("Daily QC: Blue",gp=gpar(fontsize=20,font=3)))

Upvotes: 58

Yorgos
Yorgos

Reputation: 30485

main=textGrob("Daily QC: Blue",gp=gpar(fontsize=20,font=3))

Edit with v>=2.0.0 of gridExtra, main has become top (for consistency with bottom, left and right).

Upvotes: 89

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