[英]R ggiraph - no plot when running .R file
How do I get the graph when executing a .R file? 执行.R文件时如何获取图形? The file (
test.r
) looks like this: 文件(
test.r
)如下所示:
library(ggplot2)
library(ggiraph)
gg <- ggplot(data = mtcars, aes(x = mpg, y = wt, color = factor(cyl)))
gg1 <- gg + geom_point_interactive(aes(tooltip = gear), size = 5)
ggiraph(code = print(gg1))
I am running it with this command: 我正在使用以下命令运行它:
R < test.R --no-save
But nothing happens. 但是什么也没发生。 If I just run R from the command line and enter the code line-by-line Firefox opens and shows a really nice graph with the wanted mouse-over label showing.
如果我只是从命令行运行R并输入代码,则Firefox将打开并显示一个非常漂亮的图形,其中显示了所需的鼠标悬停标签。
R version 3.2.3 (2015-12-10)
x86_64-pc-linux-gnu
R
generates a temporary .html file and then spawns a gvfs-open
process to view that file (which in turn opens Firefox). R
生成一个临时的.html文件,然后生成一个gvfs-open
进程来查看该文件(依次打开Firefox)。 When you are running your script from the command line, R
exits and cleans up its temporary files before Firefox process has a chance to fully load. 当您从命令行运行脚本时,
R
退出并清理其临时文件,然后Firefox进程才有机会完全加载。 You can see this in effect by doing 您可以通过执行以下操作看到效果
$ R -q --interactive < test.R
> library(ggplot2)
> library(ggiraph)
> gg <- ggplot(data = mtcars, aes(x = mpg, y = wt, color = factor(cyl)))
> gg1 <- gg + geom_point_interactive(aes(tooltip = gear), size = 5)
> ggiraph(code = print(gg1))
Save workspace image? [y/n/c]:
gvfs-open: /tmp/RtmpPxtiZi/viewhtml3814550ff070/index.html: error opening location:
Error when getting information for file '/tmp/RtmpPxtiZi/viewhtml3814550ff070/index.html': No such file or directory
A simple fix is to add Sys.sleep(5)
at the end of your script. 一个简单的解决方法是在脚本末尾添加
Sys.sleep(5)
。 This pauses R
for a few seconds, allowing gvfs-open
process to finish opening your temporary file in a browser window, before R
exits and cleans up after itself. 这会暂停
R
几秒钟,从而允许gvfs-open
进程在浏览器窗口中完成打开临时文件的操作,然后R
退出并自行清除。
Note that R
will still remove the temporary index.html
file when it exits after Sys.sleep()
, but Firefox will already have a cache in memory. 请注意,
R
在Sys.sleep()
之后退出时仍会删除临时index.html
文件,但是Firefox在内存中已经具有缓存。
EDIT: An alternative solution is to explicitly write out your interactive plot to an .html file that persists after R
exits. 编辑:一种替代解决方案是将交互式绘图明确写出为.html文件,该文件在
R
退出后仍然存在。 You can do this by storing the result of ggiraph
to a variable and then passing that to htmlwidgets::saveWidget
: 您可以通过将
ggiraph
的结果存储到变量中,然后将其传递给htmlwidgets::saveWidget
:
myplot <- ggiraph(code = print(gg1))
htmlwidgets::saveWidget( myplot, "test.html" )
browseURL( "test.html" )
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