[R] ggplot2 - legend for fill coulours

[hadley wickham]

>  However, it looks this works only when the data are in the sequence
>  of the levels in the factor defining the fill colours. When the
>  sequence is different, the legend gets "scrambled", in that the order
>  of the colours does not match the labels.

You can fix this by explicitly specifying the breaks to use in the
identity scale:

 + scale_fill_identity(labels=levels(plotdata2$group),
breaks=levels(plotdata2$group))

That way there's no confusion about how the values and their labels match up.

Regards,

Hadley

-- 
http://had.co.nz/