Dear all,



I have a probability of presence of distribution of a species of interest

(varying from 0 to 1 in continuous form) and I have a set of points

where I know that species really occurs. But I don´t have points of absence.



So, for each true presence I know the estimated presence.

I would like to know how can I compute AUC, taking account these

Available data.



Best wishes,



Miltinho autronauta

brazil

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