Bubble Map: Map Selection

#1

Hey everyone,
I am new to Plotly and need some help! I am trying to make a bubble map of baltimore md. But I can’t figure out how to get a roadmap of baltimore maryland instead of a map of the usa.

I think this is the section of code that needs to be edited:

g<-list(
scope=‘usa’,
projection=list(type=‘albers usa’),
showland=TRUE,
landcolor=toRGB(“gray85”),
subunitwidth=1,
countrywidth=1,
subunitcolor=toRGB(“white”),
countrycolor=toRGB(“white”)
)

Help would be very much appreciated!