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：

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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,

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"l" for lines,

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"b" for both,

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

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"o" for both ‘overplotted’,

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

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"s" for stair steps,

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

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"n" for no plotting.

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

更多参见

help(plot)

R之折线图

原文：http://snv.iteye.com/blog/2175365