将多个ggplot保存在R中的单个pdf文档中

Question

是否有方法将所有plots保存为单个pdf文档

library(tidyverse)
library(lubridate)
set.seed(123)
DF1 <- data.frame(Date = seq(as.Date("2001-01-01"), to= as.Date("2003-12-31"), by="day"),
A = runif(1095, 0,10),
D = runif(1095,5,15))
DF1 %>% pivot_longer(names_to = "Variable", values_to = "Value", -Date) %>% 
ggplot(aes(x = Date, y = Value))+
geom_line()+
facet_wrap(~Variable)+
ggsave("Plot1.pdf", dpi = 200, height = 6, width = 8)

DF2 <- data.frame(Date = seq(as.Date("2005-03-01"), to= as.Date("2005-05-31"), by="day"),
Z = runif(92, 0,10))
DF2 %>% ggplot(aes(x = Date, y = Z))+
geom_line()+
ggsave("Plot2.pdf", dpi = 200, height = 6, width = 8)

Answer 1

对于您的数据，您可以保存绘图，然后使用pdf。如果有大量绘图，最好创建一个包含绘图的列表并导出它们。这里是你的绘图代码(你可以玩pdf的高度和宽度参数(：

library(tidyverse)
library(lubridate)
set.seed(123)
DF1 <- data.frame(Date = seq(as.Date("2001-01-01"), to= as.Date("2003-12-31"), by="day"),
A = runif(1095, 0,10),
D = runif(1095,5,15))
DF1 %>% pivot_longer(names_to = "Variable", values_to = "Value", -Date) %>% 
ggplot(aes(x = Date, y = Value))+
geom_line()+
facet_wrap(~Variable) -> G1
DF2 <- data.frame(Date = seq(as.Date("2005-03-01"), to= as.Date("2005-05-31"), by="day"),
Z = runif(92, 0,10))
DF2 %>% ggplot(aes(x = Date, y = Z))+
geom_line()->G2
#Export
pdf('Yourfile.pdf',height = 6, width = 8)
plot(G1)
plot(G2)
dev.off()