[R] Choosing the number of colour breaks in ggplot2

[Karl Ove Hufthammer]

Fredag 13. juli 2007 skreiv hadley wickham:

> There's no official way to do it, but you can "hack" the colour
> gradient scale to do what you want:
>
> # Create a modified scale
> gr <- scale_fill_gradient2()$clone()
> gr$breaks <- function(.) seq(-100, 100, by=10)

Thank you so much. It works perfectly.

-- 
Karl Ove Hufthammer