How can I force ggplot to show more levels on the legend?

Question

I\'m trying to create a complex ggplot plot but some things don\'t work as expected.

I have extracted the problematic part, the creation of points and its associated

Answer 1

If you set the limits to encompass the breaks you'll be able to alter the legend. Current most of the breaks are outside the default limits of the scale.

ggplot() + 
    geom_point(data = nodos,
               aes(x = ord, y = event, size = NP), color="black", shape = 16) +
    scale_size_continuous(name = "Prop.",
                          breaks = bb,
                          limits = c(.05, .4),
                          labels = ll,
                          range = c(0, 6) )