This chart illustrates many tips you can apply to a base R barplot:
- Add abline with
abline() - Change axis labels orientation with
las - Add text with
text() - Add a legend with
legend()
# Data
data <- data.frame(
name = c("DD","with himself","with DC","with Silur" ,"DC","with himself","with DD","with Silur" ,"Silur","with himself","with DD","with DC" ),
average = sample(seq(1,10) , 12 , replace=T),
number = sample(seq(4,39) , 12 , replace=T)
)
# Increase bottom margin
par(mar=c(6,4,4,4))
# Basic Barplot
my_bar <- barplot(data$average , border=F , names.arg=data$name ,
las=2 ,
col=c(rgb(0.3,0.1,0.4,0.6) , rgb(0.3,0.5,0.4,0.6) , rgb(0.3,0.9,0.4,0.6) , rgb(0.3,0.9,0.4,0.6)) ,
ylim=c(0,13) ,
main="" )
# Add abline
abline(v=c(4.9 , 9.7) , col="grey")
# Add the text
text(my_bar, data$average+0.4 , paste("n: ", data$number, sep="") ,cex=1)
#Legende
legend("topleft", legend = c("Alone","with Himself","With other genotype" ) ,
col = c(rgb(0.3,0.1,0.4,0.6) , rgb(0.3,0.5,0.4,0.6) , rgb(0.3,0.9,0.4,0.6) , rgb(0.3,0.9,0.4,0.6)) ,
bty = "n", pch=20 , pt.cex = 2, cex = 0.8, horiz = FALSE, inset = c(0.05, 0.05))
