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Highlight labelled points

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hadley 2016-08-17 11:25:00 -05:00
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communicate-plots.Rmd
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@ -109,9 +109,12 @@ That helps a bit, but if you look closely in the top-left hand corner, you'll no
```{r}
ggplot(mpg, aes(displ, hwy)) +
geom_point(aes(colour = class)) +
geom_point(size = 3, shape = 1, data = best_in_class) +
ggrepel::geom_label_repel(aes(label = model), data = best_in_class)
```
Note the other handy technique here: I added a second layer of large, hollow points to highligh the points that I've labelled.
You can sometimes use the same idea to replace the legend with labels placed directly on the plot. It's not wonderful for this plot, but it isn't too bad. (`theme(legend.position = "none")` turns the legend off --- we'll talk about it more shortly).
```{r}