Getdist produces nice contour plots. I need to plot/add some curves in a 2D contour plot of two parameters. But I could not find any such option in the documentation of getdistplotter. I am able to ...

for closed vertex cone, the "added noise vertical red lines" in front of the cone in 3D plot disappeared. it is a correct 3D graph. Expected outcome. for open vertex cone, the 3D graph front surface ...