[SciPy-user] Getting coordinates of a level (contour) curve

Hi, I have a fixed bivariate gaussian density function, and I want to compute the coordinates (x(l), y(l)) of a given level curve, where l is the parameter of the curve. I can easily plot the level x curve with matplotlib, using function 'contour', but I have no idea about how to get its coordinates (something like an (N,2) array specifying the coordinates of N points along the curve). With fsolve I can find one of such points, but its is not enough :) Thanks in advance for your help, Best Mico