multiplot: Display multiple plots created by ggplot2 in the same window.

In KodyGelvin/STA485_2018: Functions for Simulation Study

Description

Display multiple plots created by ggplot2 in the same window.

Usage

multiplot(..., plotlist = NULL, layout = NULL, ncol = 1)

Arguments

...	One or more ggplot2 plots
plotlist	One or more ggplot2 plots already grouped into ggplot2 plotlist structure
layout	A matrix of integers that maps the location of each plot to the resulting plot grid
ncol	The number of columns desired in the output grid. Only used if layout=NULL.

Author(s)

Winston Chang - Code was taken from "Cookbook for R"

Examples

# 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")

# Third plot
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) 
  
# A simple 2x2 grid of plots   
multiplot(p1, p2, p3, p4, ncol=2)

# Make plot1 take up 3 rows, and put the other three in column two
my.layout <- cbind( c(1,1,1), c(2,3,4))
my.layout
multiplot(p1, p2, p3, p4, layout=my.layout)

KodyGelvin/STA485_2018 documentation built on May 17, 2019, 10:11 p.m.