12/01/31 10:47:16.46
>>369
こんな感じじゃないの
i <- (1:360)/360*2*pi
cntr <- c(0.1,0.3)
v <- c(94,78,78,97)
arc <- cut(1:360,c(0,round(cumsum(v)*360/sum(v)),Inf))
plot(cos(i),sin(i),type="n",asp=1,axes=FALSE,xlab="",ylab="")
l <- levels(arc)
cols <- c("deepskyblue","dodgerblue1","dodgerblue3","brown1")
lbs <- c("50代\n94人","40代\n78人","30代\n78人","10～20代\n97人")
cexs <- c(1.5,1.5,1.5,3)
for (j in 1:4){
k <- c(i[arc==l[j]],max(i[arc==l[j]])+1/360*2*pi)
polygon(c(cntr[1],cos(k)),c(cntr[2],sin(k)),
col=cols[j])
text(mean(cos(k))/1.5,mean(sin(k))/1.5,lbs[j],cex=cexs[j])
}