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
# 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")
