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R之折线图

需求:

用R语言画折线图

实现:

xiao <- read.table("d:/final.txt",header=T,sep=",") data<-xiao[order(-xiao[,2]),] Precision<-data[,1] Recall<-data[,2] plot(Recall,Precision,type="o",main="PR图",col="blue",frame.plot=TRUE)

对应的数据文件参见附件

显示图如下:

R之折线图 参数说明:

plot(x, y, type,main,col,frame.plot...)

x:x的数据列

y:y的数据列

type包括如下:

"p" for points,

"l" for lines,

"b" for both,

"c" for the lines part alone of "b",

"o" for both ‘overplotted’,

"h" for ‘histogram’ like (or ‘high-density’) vertical lines,

"s" for stair steps,

"S" for other steps, see ‘Details’ below,

"n" for no plotting.

main:an overall title for the plot: see title.

更多参见

help(plot)

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