R语言pROC包绘制ROC曲线
> head(mtcars)
Mazda RX4 21.0 6 160 110 3.90 2.620 16.46 0 1 4 4
Mazda RX4 Wag 21.0 6 160 110 3.90 2.875 17.02 0 1 4 4
Datsun 710 22.8 4 108 93 3.85 2.320 18.61 1 1 4 1
Hornet 4 Drive 21.4 6 258 110 3.08 3.215 19.44 1 0 3 1
Hornet Sportabout 18.7 8 360 175 3.15 3.440 17.02 0 0 3 2
Valiant 18.1 6 225 105 2.76 3.460 20.22 1 0 3 1
> library(pROC)
> plot.roc(vs~wt,mtcars,col=”1″)->r1
> lines.roc(vs~mpg,mtcars,col=’2′)->r2
> roc(vs~wt,mtcars)->r1
> roc(vs~mpg,mtcars)->r2
> roc.test(r1,r2)
data: r1 and r2
D = -1.7035, boot.n = 2000, boot.stratified = 1, p-value = 0.08848
alternative hypothesis: true difference in AUC is not equal to 0
sample estimates:
AUC of roc1 AUC of roc2
>
转载请注明:数据分析 » R语言pROC包绘制ROC曲线_r语言绘制roc曲线