Can colors and shape be changed on a combined line and point plot while maintaining one legend per graph?

I believe @thunk has it right, but there's some more problems with your code. (1) You specify fill but then you don't use any geoms that take a fill . (2) You set the default aesthetics in the first ggplot then you needlessly reset them in your geom s.

(3) You want the shapes to change, but you never specify a shape aesthetic.

I think that what you want to do can be achieved by adding the following line to your graph creation.

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