function dx = stops(p1, p2, gradient)

x1 = inverseLinearGraph(p1, gradient);
x2 = inverseLinearGraph(p2, gradient);

%x1 = inverseOurExp(p1, gradient);
%x2 = inverseOurExp(p2, gradient);




%x1 = invExposureDensity(p1);
%x2 = invExposureDensity(p2);


dx = x2 - x1;
