How to place xtable object to the left side of page

问题

Question: How to place xtable object to the left side of page or how to disable centering globally.

I'm struggling to figure out how to place xtable object on the left side. I have got a *.Rmd file and all this goes to the relevant r chunk.

require(xtable)
df <- data.frame(x=seq(1,10,1),y=rnorm(10))

Xtab <- xtable(df, digits=0, caption="\\textbf{MINIMAL/IDEAL}",  
               floating=FALSE, latex.environments = c("left"))
print(Xtab, size = "small", include.colnames=FALSE)

I have included the following after reading various sources (print.xtable; xtable manual etc.)

1) floating=FALSE 2) latex.environments = c("left")

I have searched SO and used some of the hints but all failed.

回答1:

It seems to make quite a difference whether you pass a parameter to xtable() or to print(xtable()). The following chunk creates a table according to your data that is aligned at the left of the page in the pdf file.

```{r, results='asis',echo=FALSE}
library(xtable)
df <- data.frame(x=seq(1, 10, 1),y = rnorm(10))
print(xtable(df,digits=0, caption="\\textbf{MINIMAL/IDEAL}"), include.colnames=FALSE, size = "small", comment=FALSE, latex.environments="flushleft")
```

However, as you can see, the caption remains at the center of the page.

来源：https://stackoverflow.com/questions/31896916/how-to-place-xtable-object-to-the-left-side-of-page