[R] How to calculate the AUC in R

["Dubas, João Paulo"]

Quoting Frank E Harrell Jr:

> Dubas, João Paulo wrote:
>
>> Quoting Frank E Harrell Jr:
>>
>> Do you know any book where I can get more information about the subject?
>>
>> Thanks for the help
>> João Paulo Dubas.
>
>
> No, other than an algebra or calculus book where numerical integration 
> is discussion.

Thanks to all listers that helped me in this question.
The function AUC on the ROC package can be used for the analysis of of
the relationship sensitivity x sensibility of a test, I couldn't adjust
that function to my purpose.