R画图，设画布大小，做点图，标注三步走

老板要用R做个multidimensonal scaling的plot图，四个主要人种，三个非主流人类化石

 

par(mar=c(5,4,8,10)+0.1,xpd=TRUE)
plot(m$C1,m$C2,pch=16,col=k,main="MDS",xlab="Dim1",ylab="Dim2")
legend("bottomright",inset=c(-0.45,0),c("Denisovan","Neandertal","Papuan","YRI","CEU","JPT","CHB"),pch=16,col=c("orange","green","blue","black","pink","red","yellow"))

par、plot、legend的命令应该依次使用

par中的mar是单位为文本行的边界，c(5,4,8,10)依次是：底，左，上，右（+0.1不知道什么意思）,xpd意思是能在图以外的地方画legend

 

plot中xlab是横轴标注，k是c(rep("black",90))，意思是用黑色标注90个人

 

legend中bottomright是右下角,inset是配套bottomright的坐标，后面紧跟是标注等