manually add a legend to the Map

[Ava Olsen]

Hi everyone,

I created a Midwest map and wanted to add a little right triangles
representing clinics to the map by the code below

Midwest + geom_point(data=clinics, aes(x=lon, y=lat, group=group), size =
2, show.legend = F)

I wanted to manually create a legend to show that a little red triangle
representing clinics.

Tried to reconstruct the data by adding variables like shape = 24 to the
'clinics' dataset and run the code like this

hosp + geom_point(data=clinics, aes(x=lon, y=lat, group=group,
shape=shape), size = 2, show.legend = T)

but get an error message saying 'Error: Continuous value supplied to
discrete scale '

Any help will be appreciated! thanks, Ava
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