but for my own curiosity, what was the density threshold you ran with versus the density threshold of the plot you're trying to reproduce? And have you run with identical density thresholds, to see if that alone fixes it? That parameter is already tunable.
I actually haven't gotten the plot yet that Brian made due to my HaloProfiler problem (which I'm about to start working on). I have got his list of haloes reproduced. The plot I made earlier was with a threshold=160.0, and Brian ran at 80.0. He also ran with a lower minimum group size in regroup (2 versus 20), which is something that is currently hard coded in yt-hop. So the lower threshold and the lower minimum group size is what I needed.
The other one that I think could be of relevance is the saddle joining parameter, which is passed as "-dsaddle" to regroup in the standard Eisenstein distribution. If you look in hop_regroup.c, though, you can see that it's been hard-coded by "GLB." Since I got the code from the enzo/anyl distribution, not from the Eisenstein distribution, I think we can safely say that's Greg. :)
It would be nice to make that a parameter then.
So in summary, I see what you're saying. I'd then add at minimum, the minimum group size, and -dsaddle.
_______________________________________________________ firstname.lastname@example.org o__ Stephen Skory http://physics.ucsd.edu/%7Esskory/ _.>/ _Graduate Student ________________________________(_)_\(_)_______________