[R] how to create ROC curve for 2 dimensional classifiers

[Richard Pearson]

I'm not aware of any packages for doing such plots. Conceptually, 
presumably a ROC curve for a 2d classifier would be a 3d chart, with 
x-axis being FPR for 1st classifier, z-axis being FPR for 2nd classifier 
and y-axis being TPR. You would get a "ROC surface" rather than a ROC 
curve. Does that make sense?

Regards

Richard.


Waverley wrote:
> Hi,
>
> I understand for 1 d classifiers, you can use ROCR package.
>
> Is there a package you can plot ROC curve for 2d classifiers?  One of
> my colleagues asked me about this.  I have been quite puzzled,
> conceptually, how you can do the ROC curve for 2d classifiers.  Can
> someone share his/her knowledge or experience?
>
> Thanks in advance.
>
>