在RStudio中创建好的kable输出-CreatinggoodkableoutputinRStudio

I've got a data frame that looks like this:

我有一个如下所示的数据框：

er.frame <- structure(c(0.475, 0.525, 0.45, 0.475, 0.45, 0.55, 0.425, 0.5, 
0.5, 0.4, 0.45, 0.375, 0.55, 0.425, 0.5, 0.475, 0.4, 0.45, 0.375, 
0.55, 0.425), .Dim = c(7L, 3L), .Dimnames = list(NULL, c("CSP.LDA.error.rate", 
"CSP.SWLDA.error.rate", "CSP.SVM.error.rate")))

kable(er.frame)

|  CSP.LDA.error.rate|  CSP.SWLDA.error.rate|  CSP.SVM.error.rate|
|-------------------:|---------------------:|-------------------:|
|               0.475|                 0.500|               0.500|
|               0.525|                 0.500|               0.475|
|               0.450|                 0.400|               0.400|
|               0.475|                 0.450|               0.450|
|               0.450|                 0.375|               0.375|
|               0.550|                 0.550|               0.550|
|               0.425|                 0.425|               0.425|

I'd like to have that kable output be processed by knitr and make a nice table in the HTML report. Following the documentation in ?kable, I made this snippet:

我想让knitr处理那个kable输出，并在HTML报告中创建一个漂亮的表。根据？kable中的文档，我制作了以下片段：

``` {r snippet}
opts_chunk$set(results='asis')
kable(er.frame)
```

My HTML report, though, as generated by RStudio, is just the echoed console output (or nothing at all, if I add the option output=FALSE):

但是，我的HTML报告由RStudio生成，只是回显的控制台输出（或者根本没有，如果我添加选项output = FALSE）：

## |  CSP.LDA.error.rate|  CSP.SWLDA.error.rate|  CSP.SVM.error.rate|
## |-------------------:|---------------------:|-------------------:|
## |               0.425|                 0.400|               0.400|
## |               0.425|                 0.475|               0.500|
## |               0.400|                 0.400|               0.400|
## |               0.425|                 0.425|               0.425|
## |               0.425|                 0.325|               0.275|
## |               0.350|                 0.375|               0.375|
## |               0.450|                 0.425|               0.425|

The above is also what appears in the generated Markdown file with accompanying ``` delimiters, and it looks just fine if I remove the delimiters and the hashes.

上面的内容也出现在生成的Markdown文件中，附带```分隔符，如果删除分隔符和哈希值，它看起来很好。

How do I properly output using kable? This question's accepted answer hints at it, but doesn't go as far as the documentation.

如何使用kable正确输出？这个问题被接受的答案暗示了它，但没有达到文档的范围。

Incidentally, I'm running R 2.15.1, knitr 1.5.15.

顺便说一下，我正在运行R 2.15.1，knitr 1.5.15。

1 个解决方案

```{r, results = 'asis'}
kable(er.frame)
```