在命令行上使用参数运行RMarkdown [英] Run RMarkdown with arguments on the command line
问题描述
我正在尝试从命令行终端运行Rmarkdown文件( myfile.Rmd
).该文件需要带一个参数才能起作用.我们可以以这个简单的文件为例:
I'm trying to run a Rmarkdown file (myfile.Rmd
) from the command line terminal. This file needs to take an argument to work. We can use this simple file as an example:
---
title: "Simple example"
output:
pdf_document: default
---
```{r read_arg, include=FALSE}
args = commandArgs(TRUE)
VAR = args[1]
```
```{r show_var}
VAR
```
因此,首先,是否可以像读取Rscripts一样通过读取参数来运行Rmarkdown文件?我的意思是,不是按照此问题中所述读取输入文件.
So, first of all, is it possible to run a Rmarkdown file by reading arguments as done for Rscripts? I mean, not by reading input files as described in this question.
如果是,该怎么办?我希望该作品此处曾经运行过Rmarkdown文件对我有用,但这不是因为参数.我正在尝试运行类似的内容:
If so, how can it be done? I hope that the piece of work here used to run a Rmarkdown file worked for me, but it doesn't because of the argument. I'm trying to run something like:
Rscript -e "rmarkdown::render('myfile.Rmd myarg')"
编辑:但它出现以下错误:
But it gives the following error:
tools :: file_path_as_absolute(input)中的错误:文件'myfile.Rmd_myarg'不存在调用:-> setwd->目录名->Además:警告消息:1:在normalizePath(path,winslash = winslash,mustWork = mustWork)中:path [1] ="myfile.Rmd myarg":不存在任何导演2:在normalizePath(path,winslash = winslash,mustWork = mustWork)中:path [1] ="myfile.Rmd_myarg":不存在任何导演跨界大叶蜂
Error in tools::file_path_as_absolute(input) : file 'myfile.Rmd_myarg' does not exist Calls: -> setwd -> dirname -> Además: Warning messages: 1: In normalizePath(path, winslash = winslash, mustWork = mustWork) : path[1]="myfile.Rmd myarg": No existe el fichero o el directorio 2: In normalizePath(path, winslash = winslash, mustWork = mustWork) : path[1]="myfile.Rmd_myarg": No existe el fichero o el directorio Ejecución interrumpida
有什么想法吗?谢谢!
推荐答案
添加 myarg
对象作为参数是一种方法:
Adding the myarg
object as a parameter is the way to go:
Rscript -e"rmarkdown :: render('example.Rmd',params = list(args = myarg))"
然后将参数添加到您的 Rmd
文件中:
And then add the parameter to your Rmd
file:
---
title: "Simple example"
output:
pdf_document: default
params:
args: myarg
---
此处有关参数化报告的文档: https://rmarkdown.rstudio.com/developer_parameterized_reports.html
Documentation on parameterized reports here: https://rmarkdown.rstudio.com/developer_parameterized_reports.html
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