\( \newcommand{\P}[]{\unicode{xB6}} \newcommand{\AA}[]{\unicode{x212B}} \newcommand{\empty}[]{\emptyset} \newcommand{\O}[]{\emptyset} \newcommand{\Alpha}[]{Α} \newcommand{\Beta}[]{Β} \newcommand{\Epsilon}[]{Ε} \newcommand{\Iota}[]{Ι} \newcommand{\Kappa}[]{Κ} \newcommand{\Rho}[]{Ρ} \newcommand{\Tau}[]{Τ} \newcommand{\Zeta}[]{Ζ} \newcommand{\Mu}[]{\unicode{x039C}} \newcommand{\Chi}[]{Χ} \newcommand{\Eta}[]{\unicode{x0397}} \newcommand{\Nu}[]{\unicode{x039D}} \newcommand{\Omicron}[]{\unicode{x039F}} \DeclareMathOperator{\sgn}{sgn} \def\oiint{\mathop{\vcenter{\mathchoice{\huge\unicode{x222F}\,}{\unicode{x222F}}{\unicode{x222F}}{\unicode{x222F}}}\,}\nolimits} \def\oiiint{\mathop{\vcenter{\mathchoice{\huge\unicode{x2230}\,}{\unicode{x2230}}{\unicode{x2230}}{\unicode{x2230}}}\,}\nolimits} \)

ggplot2 is a plotting tool for R

Usage

Resources

Bar Chart

 

Example bar graph:

data(mtcars)
library(ggplot2)
ggplot(mtcars, aes(x=cyl, y=wt)) + 
  geom_bar(stat="identity", fill="steelblue") +
  xlab("Cylinders") + 
  ylab("Weight (1000 lbs)") + 
  ggtitle("Car Weight vs Cylinders") +
  theme_gray() + 
  theme(plot.title = element_text(hjust = 0.5))

Line Graph

Pie Chart

Saving Images

ggsave documentation

# Save as PDF
ggsave("barchart_example.pdf", plot=plt, width=6, height=4, device="pdf")
embedFonts(path.expand("barchart_example.pdf"))

# Save as PNG
ggsave("barchart_example.png", plot=plt, width=6, height=4, dpi=300)

For embedding in a latex file, I recommend exporting as PDF. This allows exporting as a vector format with text.
If you must export as a raster image (jpeg, png), set the dpi flag to get a high-resolution image.

Note that embed fonts requires ghostscript:

apt-get install ghostscript -y

Legends

Customizing FAQ
guide_legend

# Move legend to the bottom
plot <- plot +  theme(legend.position = "bottom")

# Set color legend to have two rows
plot <- plot +  guides(color=guide_legend(nrow=2, byrow=TRUE))