How to reverse legend (labels and color) so high value starts downstairs?

Question

whats the best way to invert the legend label order so the 7 is down and the 1 is upstairs?

Answer 1

Your code is quite strange, with false instead of FALSE and incorrectly placed guide_legend. The correct usage is (@Harpal gives a hint on that):

ggplot(data.frame(x=1:4, y=4:1, col=factor(1:4)), aes(x=x, y=y, col=col)) + 
  geom_point(size=10)
ggplot(data.frame(x=1:4, y=4:1, col=factor(1:4)), aes(x=x, y=y, col=col)) + 
  geom_point(size=10) + guides(colour = guide_legend(reverse=T))