I would like to plot following contour plots representing two dimensional cumulative distributon functions (CDF) given the data coordinates (blue solid dots).
A CDF in 2 or more dimensions is not unique (Lopes et al. The two-dimensional Kolmogorov-Smirnov test) that's why there are 4 alternative plots (and probably some more). I assume this task is in theory straightforward but time consuming, there might be something out there.
Any pointers would be very welcome. M