using formulae

hey...

m trying to implement fuzzy c-means and wanna show ROC curve. Now ROC curve is plotted with detection rate and false alarm rate of the dataset, both these are not attributes of the datset but are calculated using formulae.

I want 2 know can i get both these parameters calculated automatically if i give the formula..

if yes plz tel how..

thanx and regards.

If you want to access the code, this is part of the KNIME SDK and can be downloaded from our update site.