multiplot: Multiple plot function

In dangulod/ECTools: Economic Capital Tools

Description

ggplot objects can be passed in ..., or to plotlist (as a list of ggplot objects)

- cols: Number of columns in layout

- layout: A matrix specifying the layout. If present, 'cols' is ignored.

If the layout is something like matrix(c(1,2,3,3), nrow=2, byrow=TRUE), then plot 1 will go in the upper left, 2 will go in the upper right, and 3 will go all the way across the bottom.

Usage

multiplot(..., plotlist = NULL, file, cols = 1, layout = NULL)

Arguments

...	ggplot objects
plotlist	ggplot objects
file	file
cols	cols
layout	layout (see description)

Examples

library(ggplot2)

This example uses the ChickWeight dataset, which comes with ggplot2
First plot
p1 <- ggplot(ChickWeight, aes(x=Time, y=weight, colour=Diet, group=Chick)) +
 geom_line() +
 ggtitle("Growth curve for individual chicks")

Second plot
p2 <- ggplot(ChickWeight, aes(x=Time, y=weight, colour=Diet)) +
 geom_point(alpha=.3) +
 geom_smooth(alpha=.2, size=1) +
 ggtitle("Fitted growth curve per diet")

p3 <- ggplot(subset(ChickWeight, Time==21), aes(x=weight, colour=Diet)) +
 geom_density() +
 ggtitle("Final weight, by diet")

Fourth plot
p4 <- ggplot(subset(ChickWeight, Time==21), aes(x=weight, fill=Diet)) +
 geom_histogram(colour="black", binwidth=50) +
 facet_grid(Diet ~ .) +
 ggtitle("Final weight, by diet") +
 theme(legend.position="none")        # No legend (redundant in this graph)

 multiplot(p1, p2, p3, p4, cols=2)

dangulod/ECTools documentation built on May 4, 2019, 3:19 p.m.