小编Lan*_*ank的帖子

请帮我在R金字塔图中添加平滑线条(图中所示的粗黑线),如附图所示.感谢您的帮助.该图显示了根据年龄和性别的人口分布.

xy.pop<-c(3.2,3.5,3.6,3.6,3.5,3.5,3.9,3.7,3.9,3.5,3.2,2.8,2.2,1.8,1.5,1.3,0.7,0.4)
xx.pop<-c(3.2,3.4,3.5,3.5,3.5,3.7,4,3.8,3.9,3.6,3.2,2.5,2,1.7,1.5,1.3,1,0.8)
agelabels<-c("0-4","5-9","10-14","15-19","20-24","25-29","30-34",
         "35-39","40-44","45-49","50-54","55-59","60-64","65-69","70-74",
         "75-79","80-44","85+")
mcol<-color.gradient(c(0,0,0.5,1),c(0,0,0.5,1),c(1,1,0.5,1),18)
fcol<-color.gradient(c(1,1,0.5,1),c(0.5,0.5,0.5,1),c(0.5,0.5,0.5,1),18)
par(mar=pyramid.plot(xy.pop,xx.pop,labels=agelabels,main="Australian population pyramid 2002",lxcol=mcol,rxcol=fcol,))