Hello!

I want my y axis in this plot to range from 0 to 1 and use as break points
0, 0.1, 0.2 up to 1.
Why is my code below not working?

Thank you!

  library(ggplot2)
  test<-data.frame(a=1:4,b=c(0.12,0.5,0.6,0.4))

  ggplot(test, aes(x=a, y=b))+geom_line()+
    scale_x_continuous(breaks=1:4)+
    scale_y_continuous(breaks=seq(0,1,by=0.1))

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