Ggplot2: Difference between revisions
| Line 25: | Line 25: | ||
===Line Graph=== | ===Line Graph=== | ||
===Pie Chart=== | ===Pie Chart=== | ||
===Saving Images=== | |||
[https://ggplot2.tidyverse.org/reference/ggsave.html ggsave documentation] | |||
<syntaxhighlight lang="R"> | |||
# 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) | |||
</syntaxhighlight> | |||
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. | |||
Revision as of 18:08, 28 October 2020
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
# 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.