# 春晖の学习治疗整合

## 秋色从西来，苍然满关中。

Posted by Chevy on November 4, 2021

Update:2021-11-16

statology网站

• 有基础的统计概念简介
• R语言和Python的机器学习
• R语言操作的实例

DataNovia网站

• R语言可视化ggplot2示例
• cluster analysis

You can use the following basic syntax to save multiple plots to a PDF in R:

``````#specify path to save PDF to
destination = 'C:\\Users\\Bob\\Documents\\my_plots.pdf'

#open PDF
pdf(file=destination)

#specify to save plots in 2x2 grid
par(mfrow = c(2,2))

#save plots to PDF
for (i in 1:4) {
x=rnorm(i)
y=rnorm(i)
plot(x, y)
}

#turn off PDF plotting
dev.off()
``````

The following examples show how to use this syntax in practice.

### Example 1: Save Multiple Plots to Same Page in PDF

The following code shows how to save several plots to the same page in a PDF:

``````#specify path to save PDF to
destination = 'C:\\Users\\Bob\\Documents\\my_plots.pdf'

#open PDF
pdf(file=destination)

#specify to save plots in 2x2 grid
par(mfrow = c(2,2))

#save plots to PDF
for (i in 1:4) {
x=rnorm(i)
y=rnorm(i)
plot(x, y)
}

#turn off PDF plotting
dev.off()
``````

Once I navigate to the PDF in the specified location on my computer, I find the following one-page PDF with four plots on it:

### Example 2: Save Multiple Plots to Different Pages in PDF

To save multiple plots to different pages in a PDF, I can simply remove the par() function:

``````#specify path to save PDF to
destination = 'C:\\Users\\Bob\\Documents\\my_plots.pdf'

#open PDF
pdf(file=destination)

#save plots to PDF
for (i in 1:4) {
x=rnorm(i)
y=rnorm(i)
plot(x, y)
}

#turn off PDF plotting
dev.off()
``````

Once I navigate to the PDF in the specified location on my computer, I find the a four-page PDF with one plot on each page.