用ggvis编织RMarkdown到Word

Question

当我尝试将带有ggvis图的RMarkdown文档编织到Word时，我从Rstudio收到以下消息。

Error: Functions that produce HTML output found in document targeting docx output.
Please change the output type of this document to HTML.
Execution halted

是否存在一个优雅的解决方案（没有太多努力）来实现这一点，可能使用export_png和vg2png？

Answer 1

以下是一个例子：

```{r setup, include=FALSE}
library(dplyr)
library(ggvis)
```

The following table looks fine...
As long as I don't include this plot below

```{r, echo=FALSE, include=FALSE}
p <- pressure %>%
  ggvis(x = ~temperature, y = ~pressure) %>%
  layer_bars()
export_png(p, file = "hoge.png")
```

![](hoge.png)

如果你经常使用它，你可以定义钩子。

Answer 2

1. 首先转到Node JS Download page

2. 安装node.js后，在终端运行中：

   npm install vega