How to draw dual axes in ggplot2？-CodePudding

I am a novice. I am trying to draw a two-coordinate line chart in which the abscissa represents D, the left ordinate represents R, and the right ordinate represents M and A. My data set and code are below, and I want to control the left vertical axis The range of coordinates is (0.9-1.0), and the right is (0.1-0.5), how can I do this?

data<-data.frame(R=c(0.9649789,0.9700804,0.9632690,0.9523244,0.9339738),
             M=c(0.2465927,0.2263204,0.2520991,0.2982259,0.3614747),
             A=c(0.1427684,0.1428706,0.1642165,0.1937662,0.2353444),
             D=c(20,15,10,5,2))

p2<-ggplot(data,
           aes(x = D,y=R)) 
     geom_line(color="#6FB585") 
     geom_point(size=3,color="#6FB585") 
     scale_y_continuous(name = 'R',
                 sec.axis = sec_axis(~.*0.25, name = 'M and A')) 
     geom_line(aes(y=M,x=D), color="#E8BF80") 
     geom_point(aes(y=M, x=D),size=3,color="#E8BF80") 
     geom_line(aes(y=A,x=D), color="#A8BF85") 
     geom_point(aes(y=A, x=D),size=3,color="#A8BF85")

CodePudding user response：

This might be something to start with:

ggplot(data,
           aes(x = D,y=R)) 
    geom_line(color="#6FB585") 
    geom_point(size=3,color="#6FB585") 
    scale_y_continuous(name = 'R',
                       sec.axis = sec_axis(~(.-0.875)/0.25, name = 'M and A')) 
    geom_line(aes(y = M*0.25 0.875, x= D), color="#E8BF80")  
    geom_point(aes(y=M*0.25 0.875, x=D),size=3,color="#E8BF80") 
    geom_line(aes(y=A*0.25 0.875,x=D), color="#A8BF85") 
    geom_point(aes(y=A*0.25 0.875 , x=D),size=3,color="#A8BF85")