Adjust X/Y lim in a multiple line-chart

[cereghetti]

Hi there. I have a multiple plotline based for each group, but every plot has a different X/Y limit, so if I plot all of them, I would have to adjust that based on each plot's max value.
This is an example of what I say:

df<-mpg
###Increase Audi Values 
df[which(grepl("audi",mpg$manufacturer)),9]<- df[which(grepl("audi",mpg$manufacturer)),9]*1000

#My plot
ggplot(df, aes(x = cty, y = hwy, colour = manufacturer)) +
  geom_point() +
  facet_wrap( ~ manufacturer)+
  geom_smooth(method = "lm") + 
  theme_minimal()

[nirgrahamuk]

Hello,
documentation for facet_wrap shows it has a scales param

?facet_wrap

i.e.

 facet_wrap( ~ manufacturer,scales="free")