从 Rscript 以交互方式运行 R [英] Run R interactively from Rscript

问题描述

我正在尝试从 Rscript 启动一个闪亮的应用程序或交互式 .Rmd 文档.然而，我得到的只是一条消息

I'm trying to start a shiny app or an interactive .Rmd document from an Rscript. However, all I get is a message

正在收听 http://127.0.0.1:...

我相信这是因为 R 以交互模式运行(另一个发布关于这个).我如何编写正确的 Rscript 以便以下任一方法都可以工作?

I believe this is because R is running in interactive mode (another post about this). How can I write the proper Rscript so that either of the following would work?

#!/usr/bin/Rscript

## This
library(shiny)
runApp(appDir = "../app")

## Or this
## rmarkdown::run("Main.Rmd")

推荐答案

如果我正确理解您的问题，我能够通过 littler，我用它代替 Rscript 来编写围绕 R 的脚本任务.我正在运行 CentOS 7，并基于您的代码问题看起来你在一个类 Unix 的机器上，所以 安装 littler 应该不是问题.为了最小的可重复性，我使用了 RStudio 提供的默认闪亮应用程序和基于闪亮的 Rmarkdown 模板，将它们保存为 testapp(项目/应用程序目录名称)和 testRMD.rmd， 分别.然后，我有以下脚本:

If I understand your question correctly, I was able to achieve this with littler, which I use in lieu of Rscript for scripting tasks that revolve around R. I'm running CentOS 7, and based on the code in your question it looks like you are on a Unix-like machine, so installing littler should not be an issue. For minimal reproducibility, I used the default shiny application and shiny-based Rmarkdown templates provided by RStudio, saving them as testapp (the project / application directory name) and testRMD.rmd, respectively. Then, I have the following scripts:

testapp.r

#!/usr/bin/env r

shiny::runApp(
  "~/tmp/delete/testapp",
  port = 7088, 
  launch.browser = TRUE,
  host = "127.0.0.1")

<小时>

testRMD.r

#!/usr/bin/env r

rmarkdown::run(
  file = "testRMD.rmd",
  dir = "~/tmp/delete",
  shiny_args = list(
    port = 7088,
    launch.browser = TRUE,
    host = "127.0.0.1"))

<小时>

为这些文件设置权限，以便它们可以执行 -

---

Set the permissions for these files so they can be executed -

[nathan@nrussell R]$ chmod +x testapp.r testRMD.r

(chmod +u ... 应该足够了，但无论如何...)，你应该准备好从你的终端等运行它们......

(chmod +u ... should suffice, but regardless...), and you should be all set to run them from your terminal, etc...

[nathan@nrussell R]$ ./testapp.r
Loading required package: shiny

Listening on http://127.0.0.1:7088

[nathan@nrussell R]$ ./testRMD.r
Loading required package: shiny

Listening on http://127.0.0.1:7088

我省略了 Rmd 文件的一些额外命令行输出，但我确信如果需要，这可以很容易地被抑制.无论如何，这似乎工作正常 - 闪亮的应用程序和 Rmarkdown 应用程序都是交互式的，就像从 RStudio 启动时一样 - 但如果您有其他想法，请澄清.

There is some additional command line output for the Rmd file that I omitted, but I'm sure this could be suppressed easily if desired. Anyhow, this seems to be working properly - both the shiny application and Rmarkdown application are interactive, just as when launched from RStudio - but if you had something else in mind please clarify.

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