[英]Using knitr markdown in RStudio calling two different versions of R (2.15.3 and 3.0.2)
I would like to be able to create a Knitr Markdown document calling different versions of R (2.15.3 and 3.0.2) from within R studio.Is this possible? 我希望能够创建一个Knitr Markdown文档,从R studio中调用不同版本的R(2.15.3和3.0.2)。这可能吗? The reason for this is that some packages that have been discontinued may only work in an older version of R 原因是一些已经停产的软件包可能只适用于旧版本的R
For example: 例如:
Title
========================================================
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I would like to run a package from
R version 2.15.3 (2013-03-01) -- "Security Blanket"
here:
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```{r}
summary(cars)
```
embed plots:
```{r fig.width=7, fig.height=6}
plot(cars)
```
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I would like to run a package from
R version 3.0.2 (2013-09-25) -- "Frisbee Sailing"
here:
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``{r}
summary(cars)
```
embed plots:
```{r fig.width=7, fig.height=6}
plot(cars)
I added my output here as too large for the comment box Rscript,exe is in: C:\\Program Files\\R\\R-2.15.3\\bin 我在这里添加了输出,因为注释框Rscript太大了,exe在:C:\\ Program Files \\ R \\ R-2.15.3 \\ bin
```{r,engine='Rscript', engine.path='C/Program Files/R/R-2.15.3/bin/Rscript'} version ```{r,engine ='Rscript',engine.path ='C / Program Files / R / R-2.15.3 / bin / Rscript'}版本
``` ```
on running KNIT HTML I get the following error 在运行KNIT HTML时出现以下错误
Error in system(cmd, intern = TRUE) : '"C/Program Files/R/R-2.15.3/bin/Rscript"' not found 系统错误(cmd,intern = TRUE):'“C / Program Files / R / R-2.15.3 / bin / Rscript”'未找到
Use engine
tag: 使用engine
标签:
```{r,engine='Rscript', engine.path='PATH_TO/R/R-3.0.2/bin/Rscript'}
version
```
```{r,engine='Rscript', engine.path='PATH_TO/R/R-2.15.3/bin/Rscript'}
version
```
EDIT add a picture of the knitr preview: 编辑添加knitr预览图片:
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