"no dynamic range"

When running pesummary on a simple example where only 4 parameters are sampled over, I get the classic no dynamic range error. I believe this is because corner is being called where some parameters are just a single repeated value.

I see that in some places you are jittering to avoid this. An alternative is to add

default_kwargs['range'] = default_kwargs.get('range', [1] * len(corner_parameters))

Which ensures the corner plots generate and just show a single spike.

Of course its up to you how to solve it, but currently I can't get pesummary to run on non-full-PE examples without that.