- 代码如下:
- #绘制2维饼图
- x=read.delim("C:/Users/a/Desktop/sample.txt",header=FALSE) #读入文本数据
- names(x)=c("word","count") #加表头
- x=transform(x, pct=round(x$count/sum(x$count)*100)) #数据框增加百分比列
- y=x[order(x[,2],decreasing=T),]#排序z=head(y,n=10)#抽取前10行
- percent <- paste(z$pct,"%",sep="") #add % to labels
- lbls <- paste(z$word,percent,sep="\n") #换行
- pie(z$pct,labels=lbls,col=rainbow(length(lbls)),main="Pie Chart of Word")
3D饼图
沿用前面的数据,绘制R语言绘制3D饼图的代码如下:
- #3D饼图
- library("plotrix")lp=pie3D(z$pct,radius=0.8,height=0.1,labels=lbls,explode=0.1,main="3D pie DEMO")
- #调整标签位置(效果不太好)
- lp[1] <- 0.05
- lp[3] <- 3.2
- pie3D(z$pct,radius=0.8,height=0.1,labels=lbls,labelpos=lp,explode=0.1,main="3D pie DEMO")