graph - Python yard-plot ROC curve generation incorrect -


i'm trying graph results of binary classifier roc curve (hit rate vs false alarm rate) using yard-plot. problem graph not reflect data.

the command call is:

c:\python26\scripts\yard-plot.exe -o e:\images\classifiers\roc_curve.png e:\images\classifiers\rocdata.txt

the input data "rocdata.txt": 

output  grayhistogramequalization   nopreprocessing -1  0.853186    0.822022 -1  0.430748    0.422438 -1  0.178670    0.065789 -1  0.016620    0.010388 -1  0.000693    0.000693 -1  0.000000    0.000000 +1  0.993750    0.998750 +1  0.941875    0.950625 +1  0.840625    0.874375 +1  0.748750    0.787500 +1  0.670000    0.663750 +1  0.647500    0.657500

each column tab separated.

the current output "roc_curve.png": http://imgur.com/2pf2ujv

anyone know causing this? thanks.


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