问题描述
我想运行R脚本并使用png()
保存图. Unix服务器不支持X11,并且出现以下错误消息:
I want to run R scripts and save the plots using png()
. X11 is not supported on the Unix servers and I get the following error message:
Error in X11(paste("png::", filename, sep = ""), g$width, g$height, pointsize, :
unable to start device PNG
Calls: png
In addition: Warning message:
In png("test.png", width = 900, height = 400) :
unable to open connection to X11 display ''
Execution halted
设置环境变量
Sys.setenv("DISPLAY"=":0.0")
或
Sys.setenv("DISPLAY"=":0")
R脚本中的
不能解决问题.
in the R scripts didn't solve the problem.
此代码示例产生上面的错误:
This code example produces the error above:
library(ggplot2)
library(grid)
# Some data
df = data.frame(x = c(1.2,5,3,5.3,2,9,4,6,8,0), y = c(1.5,6,2.5,5.1,2.3,8.7,4.1,6,8,0))
# Base plot
p <- ggplot(df, aes(x,y)) + geom_point() +
scale_x_continuous(limits = c(0, 8), expand = c(0,0)) +
scale_y_continuous(limits = c(0, 8), expand = c(0,0)) +
geom_smooth(method="lm", se=FALSE, formula=y~x, aes(colour="2"), show_guide=TRUE, fill=NA, size=1.2) +
geom_vline(xintercept = 3) + geom_vline(xintercept = 7) +
opts(plot.margin = unit(c(1,1,4,1), "lines"))
# Create the text Grobs
Text1 = textGrob("Part 1")
Text2 = textGrob("Part 2")
Text3 = textGrob("Part 3")
# Add the annotations
# Segment 1
p1 = p +
annotation_custom(grob = linesGrob(), xmin = 0, xmax = 0, ymin =
-1, ymax = -.75) +
annotation_custom(grob = linesGrob(), xmin = 0, xmax = 3, ymin =
-1, ymax = -1) +
annotation_custom(grob = linesGrob(), xmin = 3, xmax = 3, ymin =
-1, ymax = -.75) +
annotation_custom(grob = Text1, xmin = 0, xmax = 3, ymin = -1.25,
ymax = -1.25)
# Segment 2
p1 = p1 +
annotation_custom(grob = linesGrob(), xmin = 3, xmax = 7, ymin =
-1, ymax = -1) +
annotation_custom(grob = linesGrob(), xmin = 7, xmax = 7, ymin =
-1, ymax = -.75) +
annotation_custom(grob = Text2, xmin = 3, xmax = 7, ymin = -1.25,
ymax = -1.25)
# Segment 3
p1 = p1 +
annotation_custom(grob = linesGrob(), xmin = 7, xmax = 8, ymin =
-1, ymax = -1) +
annotation_custom(grob = linesGrob(), xmin = 8, xmax = 8, ymin =
-1, ymax = -.75) +
annotation_custom(grob = Text3, xmin = 7, xmax = 8, ymin = -1.25,
ymax = -1.25)
png("test.png", width=900, height=400)
# Code to override clipping
gt <- ggplot_gtable(ggplot_build(p1))
gt$layout$clip[gt$layout$name=="panel"] <- "off"
grid.draw(gt)
dev.off()
capabilities()
的结果是:
jpeg png tiff tcltk X11 aqua http/ftp sockets
FALSE FALSE FALSE TRUE FALSE FALSE TRUE TRUE
libxml fifo cledit iconv NLS profmem cairo
TRUE TRUE FALSE TRUE TRUE FALSE FALSE
我正在通过Sun Grid Engine运行脚本.
I am running the scripts via a sun grid engine.
推荐答案
我之前回答过一次-不能创建一个期望X11肯定会忘记它的程序,但是您可以使用虚拟帧缓冲区来假装" X11存在.
I answered this once before -- can cannot make a program which expects X11 to certainly forget about it, but you can use the virtual framebuffer to 'pretend' X11 is present.
因此请参见此较旧的SO问题以获取详细信息和示例.
So see this older SO question for details and an example.
这篇关于如何在没有X11的服务器上运行R脚本的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!