wch/ggplot2 — pull request #3 by kohske (2012-06-27 03:55:34+00:00)
Title: fix a bug with multiple guides.

Now it works.
I suggest wrapper functions of `gtable` may have consistent interface for setting the name of table and setting the name of children.

e.g., `gtable_row` should be

```{r}
guides <- gtable_col(name = "guide-box",
names = paste("guide-", seq(n), sep = ""),
grobs = lapply(ggrobs, gtable_gTree),
width = max(widths), heights = heights)
```