library("plotrix")
weighted.hist(x=df$feature,w=df$weight,breaks=seq(1,100,length.out=11),freq=F,col=rainbow(11))
#weighted.hist函数参数x为绘制直方图对象，w为权重
library("plotrix")
weighted.hist(x=df$feature,w=df$weight,breaks=seq(1,100,length.out=11),freq=F,col=rainbow(11))
#weighted.hist函数参数x为绘制直方图对象，w为权重
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