Hi,
I'm involved in a bioinformatics project at my university, and we're doing a
comparison paper between some methods of classification of 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 function that does this? Or I have to redo the tests using
another kind of measuring? If someone could help me, I'll be very grateful.
Regina Beretta Mazaro.
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