[R] calculate AUC and plot ROC in R

[Frank E Harrell Jr]

He, Yulei wrote:
> Hi, there:
> 
>  
> 
> Could someone tell me a simple function of plot ROC curve and calculate
> AUC in R? My setting is very simple, a column of the true binary
> response and another column of predicted probabilities.
> 
>  
> 
> Thanks!
> 
>  
> 
> Yulei

ROC area is easy.  See these functions in the Hmisc package: somers2, 
rcorr.cens.  What action will you take upon seeing the whole ROC curve?

Frank

-- 
Frank E Harrell Jr   Professor and Chair           School of Medicine
                      Department of Biostatistics   Vanderbilt University