我现在用的是knitr包有R降价创建HTML报告。 我有一些麻烦，当使用“+”让我的代码在不同的行。
例如，
```{r}
ggplot2(mydata, aes(x, y)) +
geom_point()
```
将返回以下的HTML文档
ggplot2(mydata, aes(x, y)) + geom_point()
通常，这是好的，但问题出现了，一旦我开始添加额外的线，我想保持独立，使代码更容易理解。 运行以下：
```{r}
ggplot2(mydata, aes(x, y)) +
geom_point() +
geom_line() +
opts(panel.background = theme_rect(fill = "lightsteelblue2"),
panel.border = theme_rect(col = "grey"),
panel.grid.major = theme_line(col = "grey90"),
axis.ticks = theme_blank(),
axis.text.x = theme_text (size = 14, vjust = 0),
axis.text.y = theme_text (size = 14, hjust = 1.3))
```
将导致所有的代码现身在一行，使其更难如下：
ggplot2(mydata, aes(x, y)) + geom_point() + geom_line() + opts(panel.background = theme_rect(fill = "lightsteelblue2"), panel.border = theme_rect(col = "grey"), panel.grid.major = theme_line(col = "grey90"), axis.ticks = theme_blank(), axis.text.x = theme_text (size = 14, vjust = 0), axis.text.y = theme_text (size = 14, hjust = 1.3))
在解决任何帮助，这将不胜感激！
尝试块选项tidy = FALSE ：
```{r tidy=FALSE}
ggplot2(mydata, aes(x, y)) +
geom_point() +
geom_line() +
opts(panel.background = theme_rect(fill = "lightsteelblue2"),
panel.border = theme_rect(col = "grey"),
panel.grid.major = theme_line(col = "grey90"),
axis.ticks = theme_blank(),
axis.text.x = theme_text (size = 14, vjust = 0),
axis.text.y = theme_text (size = 14, hjust = 1.3))
```
我发现改变块的假的“整洁”设置的一种方法是增加中间命令评论 。 这似乎使加工非整齐整个块，从而尊重换行符你有（或没有）在你的代码。 不幸的是，这并不加在具体位置的换行符（特定行）。
实施例：下面的原始文本复制到一个RMD文件和过程与knitr。
整理（即默认）
输入
```{r eval=FALSE}
# Line comments do not seem to change tidiness.
list(
sublist=list(
suba=10, subb=20 ),
a=1,
b=2 ) # End of line comment does not seem to change tidiness.
list(
sublist=list(
suba=10, subb=20 ),
a=1,
b=2 )
```
产量
# Line comments do not seem to change tidiness.
list(sublist = list(suba = 10, subb = 20), a = 1, b = 2) # End of line comment does not seem to change tidiness.
list(sublist = list(suba = 10, subb = 20), a = 1, b = 2)
Untidied
输入
```{r eval=FALSE}
list(
sublist=list(
suba=10, subb=20 ),
a=1, # Mid-command comment seems to "untidy" the chunk.
b=2 )
list(
sublist=list(
suba=10, subb=20 ),
a=1,
b=2 )
```
产量
list(
sublist=list(
suba=10, subb=20 ),
a=1, # Mid-command comment seems to "untidy" the chunk.
b=2 )
list(
sublist=list(
suba=10, subb=20 ),
a=1,
b=2 )
