Better contour smoothing?
The 2D contours use scipy.ndimage.gaussian_filter()
for smoothing (https://gitlab.com/hepcedar/contur/-/blob/main/contur/plot/contur_plot.py#L782). This is however quite aggressive in smoothing away sensitivity at the border of the contours and can therefore significantly influence the position of the contours. Maybe a smoothing/interpolation should be used that tends to shift the contour position less?