how to plot ROC curve ,given False positive rate and true positive rate

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Nithya SIvasamy
Nithya SIvasamy 2016-10-1
编辑： Walter Roberson 2016-10-5
TPR=[0.245 0.355 0.678 0.99 1]
FPR=[0.444 0.678 0.789 0.88 1]
plotroc(TPR,FPR)
when i use use plotroc,the graph displayed is in straight line manner. How to get a graph in a curved manner

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回答（1 个）

Steven Van Vaerenbergh
The first and second argument for plotroc are the targets and outputs which you used to calculate FPR and TPR.
You can plot the ROC by using plot:
plot(TPR,FPR);
or by using plotroc on the original targets and outputs:
plotroc(targets,outputs);

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