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

The are some papers on the topic (google for "roc surfaces"), but no R packages for multi-class ROC analysis. I personally have some doubts about the practical value of these approaches in the case of more than two classes, but others may disagree. Kind regards, Tobias On Thu, Feb 21, 2008 at

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

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

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

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