embed rChart in Markdown

问题

I am trying to embed a NVD3 chart in a Markdown document. I am on a Ubuntu64 system with RStudio 0.98.932, R 3.1.0, rCharts 0.4.2, the browser is Chrome.

The instructions/code from this link:

 ```{r}

library(rCharts)
library(knitr)
opts_chunk$set(comment = NA, results = "asis", comment = NA, tidy = F)

hair_eye_male = subset(as.data.frame(HairEyeColor), Sex == "Male")
n1 <- nPlot(Freq ~ Hair, group = 'Eye', 
  data = hair_eye_male, type = 'multiBarChart'
)
n1$set(width = 600)
# n1$show('iframesrc', cdn = TRUE)  # option 1
# n1$show('inline', include_assets = TRUE, cdn = TRUE)  # option 2
```

Neither of the options [n1$show] work, I just get code in a browser. Is there another way of including NVD3 documents in Markdown?

回答1:

This code is working for me. I am using ubuntu64 and same config you mentioned.

```{r, echo=FALSE,results='asis',comment=NA}
library(rCharts)
hair_eye_male <- subset(as.data.frame(HairEyeColor), Sex == "Male")
n1 <- nPlot(Freq ~ Hair, group = "Eye", data = hair_eye_male, type = "multiBarChart")
n1$show('iframesrc',cdn=TRUE)
```

Note : you must write results='asis' and comment = NA in chunk options and not use opts_chunk$set as you have in your code block and what you pasted to copy.com.

回答2:

To get rCharts to work with knit2html, you will need to use the print method with the argument include_assets = TRUE. This is because knitr will not add the js and css assets required by an rCharts plot automatically. Here is a minimal working example.

## MorrisJS with Knit2HTML

```{r results = 'asis', comment = NA}
require(rCharts)
data(economics, package = 'ggplot2')
econ <- transform(economics, date = as.character(date))
m1 <- mPlot(x = 'date', y = c('psavert', 'uempmed'), type = 'Line',
  data = econ)
m1$set(pointSize = 0, lineWidth = 1)
m1$print('chart2', include_assets = TRUE)
```

Note that you need to use m1$print('chart2', include_assets = TRUE, cdn = TRUE) if you intend to publish your chart on RPubs, for otherwise the JS and CSS assets will be served from your local library.

Source:Knitr HTML in R Markdown

来源：https://stackoverflow.com/questions/24611845/embed-rchart-in-markdown

标签

rcharts

nvd3.js