For plots like this, I’m finding I have to provide axis ranges, so
contour(0:0.005:1,0:0.005:1,mypdf) # for the OP case, with logit-normal sec. @benelsen
contour(-5:0.05:5,-5:0.05:5,(x,y)->Distributions.pdf(d,[x,y])) # for a typical MvNormal
1 Like