R语言 实现在循环中输出图片的操作

setwd("E://R")
jpeg(file="A.jpeg")
print(plot(PEO$X, PEO$Y, pch=PEO$S))
dev.off()

yourfilename=paste("A",i,".jpeg",sep="")
jpeg(file=yourfilename)

setwd("C:\Users\Administrator\Desktop\pic")
# Plot separate ggplot figures in a loop. 
library(ggplot2) 
 
# Make list of variable names to loop over. 
var_list = combn(names(iris)[1:3], 2, simplify=FALSE) 
# Make plots. 
plot_list = list() 
for (i in 1:3) { 
  p = ggplot(iris, aes_string(x=var_list[[i]][1], y=var_list[[i]][2])) + 
    geom_point(size=3, aes(colour=Species)) 
  plot_list[[i]] = p 
} 
# Save plots to tiff. Makes a separate file for each plot. 
for (i in 1:3) { 
  file_name = paste("iris_plot_", i, ".tiff", sep="") 
  tiff(file_name) 
  print(plot_list[[i]]) 
  dev.off() 
} 
 
# Another option: create pdf where each page is a separate plot. 
pdf("plots.pdf") 
for (i in 1:3) { 
  print(plot_list[[i]]) 
} 
dev.off() 

p <- c(paste0('p',1:1000))

for (i in 1:1000) {
  assign(p[i],ggplot(dat,aes(x=x,y=y))
}