Align two data.frames next to each other with knitr?

Question

I\'m new to knitr (and also quite new to R), so this might be a dumb question...

I have two data.frames, which both have two columns, but different numbers of rows.

Answer 1

Would you settle for "an image" of data.frames? Clearly my solution is crude, feel free to fiddle with the details (spacing between data.frames, for example).

Two data.frames, side by side
========================================================

```{r}
library(gridExtra)
x <- data.frame(a = runif(5), b = runif(5))
y <- data.frame(a = runif(7), b = runif(7))

grid.arrange(tableGrob(x), tableGrob(y), ncol = 2)
```