search for: classisfication

...f nc-RNA. I've been encharged of ploting the ROC curves' graphs. But I'm new on working with R and I'm having some difficulty with the prediction-class. I don't get where the values of ROCR.simple$predictions, for example, came from ($labels I understand that represents the real classisfication of that item). And I just have the values for true positive, false positive, true negative and false positive, obtained from the methods tests. So, I can't plot a graph with my own values. How can I convert these values that I have into $predictions-type needed to run ROCR? Is there any functio...