How to create a nice boxplot in R using ggplot2? | StatswithR | Arnab Hazra
Here we explain how to generate a presentation/publication-quality boxplot in R/R-studio using ggplot2. The codes for the steps explained in the video are as follows. Copy and paste them into R, run them one-by-one and try to understand what each argument is doing.
#datascience #datavisualization #visualization #ggplot2 #tidyverse #boxplot #rstudio #rcoding #normal
Step 0a: If you don't know how to load data into R, simulate a vector X using
X = rnorm(1e4, mean = 175, sd = 10)
Step 0b: if you have not installed the package ggplot2, run
install.packages("ggplot2"); library(ggplot2)
Step 1: ggplot() + geom_boxplot(mapping = aes("", y = X))
Step 2: ggplot() + geom_boxplot(mapping = aes("", X), fill = "gray")
Step 3: ggplot() + geom_boxplot(mapping = aes("", X), fill = "gray") +
ggtitle("Boxplot of heights")
Step 4: ggplot() + geom_boxplot(mapping = aes("", X), fill = "gray") +
ggtitle("Boxplot of heights") +
theme(plot.title = element_text(hjust = 0.5))
Step 5: ggplot() + geom_boxplot(mapping = aes("", X), fill = "gray") +
ggtitle("Boxplot of heights") +
theme(plot.title = element_text(hjust = 0.5)) +
xlab("") + ylab("Height (cm)")
Step 6: ggplot() + geom_boxplot(mapping = aes("", X), fill = "gray") +
ggtitle("Boxplot of heights") +
theme(plot.title = element_text(hjust = 0.5)) +
xlab("") + ylab("Height (cm)") +
theme(axis.text=element_text(size=20),
axis.title=element_text(size=20),
plot.title = element_text(size=25))