ggplot histogram code example
Example 1: ggplot2 histogram
library(ggplot2)
# Basic histogram
ggplot(df, aes(x=weight)) + geom_histogram()
# Change the width of bins
ggplot(df, aes(x=weight)) +
geom_histogram(binwidth=1)
# Change colors
p<-ggplot(df, aes(x=weight)) +
geom_histogram(color="black", fill="white")
p
Example 2: ggplot2 histogram
# Add mean line
p+ geom_vline(aes(xintercept=mean(weight)),
color="blue", linetype="dashed", size=1)
# Histogram with density plot
ggplot(df, aes(x=weight)) +
geom_histogram(aes(y=..density..), colour="black", fill="white")+
geom_density(alpha=.2, fill="#FF6666")