Venn diagrams in several figures

Question

is there a way to have the following venn diagrams as the 3rd drawing after the two histograms below? I would like two venn diagrams one on top of the other

library(VennDiagram)

plus.venn<-draw.pairwise.venn(368, 1171, 149) #venn diagram 1

minus.venn<-draw.pairwise.venn(349, 1335, 173) #venn diagram 2

par(mfrow=c(1,3))

a<-sample(1:10000,3000)

b<-sample(5000:15000,3000)

hist(a)

hist(b)

Answer 1

Turn around to MrFlicks and my comments above.

You can combine basic and grid graphics with the package gridBase. However, if you are not limited in the use of basic R graphics, it may be easier for you to create all your graphics with a grid-based graphics package and combine them with the package gridExtra.

Your data

library(VennDiagram)

plus.venn <- draw.pairwise.venn(368, 1171, 149) #venn diagram 1
minus.venn <-draw.pairwise.venn(349, 1335, 173) #venn diagram 2
a <-sample(1:10000,3000)
b <-sample(5000:15000,3000)

Placing basic and grid charts

library(grid)
library(gridBase)

# Layout of plots - 4 plots of equal size
layout(matrix(1:4, 2, byrow = TRUE))

# First & second base plot
hist(a)
hist(b)

# Grid regions of current base plot (ie from frame)
frame()
vps <- baseViewports()
pushViewport(vps$inner, vps$figure, vps$plot)
grid.draw(plus.venn)
popViewport(3)

# fourth
frame()
vps <- baseViewports()
pushViewport(vps$inner, vps$figure, vps$plot)  
grid.draw(minus.venn)
popViewport(3)

What produces

ggplot2 grid.arrange

library(ggplot2)
library(gridExtra)

grid.arrange(qplot(a, geom="histogram") + theme_classic(),
             qplot(b, geom="histogram") + theme_classic(),
             grobTree(plus.venn),
             grobTree(minus.venn),
             ncol=2)

, .