R语言-绘制双坐标图直方图与折线的结合方式

par(mar = c(5, 5, 3, 4)+0.1) #似乎是设置图片位置
bar<-barplot(gu[1:22,6],xlim=c(0.5,26),ylim=c(0,200000),ylab="交易量",
col="blue",col.axis="blue",col.lab="blue")

mtext(c(1:22),side=1,line=1,at=bar,cex=0.8,col="black")
mtext("time",side =1,line=3,col="black")
par(new=T)
plot(bar,gu[1:22,2],axes=F,xlim=c(0.5,26),ylim=c(17,23),xlab="",ylab="",
col="green",type="o")

#ylim设置不好的话就会看不见折线

axis(4,col="red",col.ticks="red",col.axis="red")
mtext("价格",side=4,line=3,col="red")
par(new=T)
plot(bar,gu[1:22,5],axes=F,xlim=c(0.5,26),ylim=c(17,23),xlab="",ylab="",
col="red",type="o")
legend("top",c('开盘价','收盘价'),col=3:2,lty=1)

> dose = c(20, 30, 40, 50, 60)
> drugA= c(16, 20, 27, 40, 60)
> drugB= c(15, 18, 25, 31, 40)
> plot(dose, drugA, type = "b")

> library(Hmisc)

> plot(dose,drugB,type="b",pch=3,lty=3,col="blue",ylim=c(0,max(drugB)*1.1),
+ xlab="x",ylab="y",main="Example")
> minor.tick(nx=5,ny=2,tick.ratio=0.5)#添加次要刻度线