Britton,

How would I install Rockstar for yt to use? Your webpage mentions
install-script.sh, but my from-source installation lacks it:

~/ART/yt >ls
appveyor.yml  CONTRIBUTING.rst  MANIFEST.in  setup.cfg    yt.egg-info
benchmarks    COPYING.txt       nose.cfg     setupext.py
build         CREDITS           __pycache__  setup.py
CITATION      doc               README.md    tests
clean.sh      docker            scripts      yt

I downloaded it as the help recommends, but then the script tries to
download and install yet another yt installation.

I need to use my clone, since I made some changes to it that I haven't
yet submitted in a pull request.





On 10/5/2018 12:23 PM, Britton Smith wrote:
> Hi Nick,
>
> Ok, good luck. It should be noted that the version of Rockstar that runs
> with yt is not the latest version of Rockstar, known as
> Rockstar-Galaxies. yt's Rockstar does not support multi-mass
> simulations. You may also find different i/o performance between the two
> versions, so it's worth experimenting, if both options are available.
>
> Britton
>
> On Fri, Oct 5, 2018 at 10:10 AM Nick Gnedin <gnedin@fnal.gov
> <mailto:gnedin@fnal.gov>> wrote:
>
>
>     Britton,
>
>     Thank you very much, I will try Rockstar first.
>
>     n
>
>
>     On 10/5/2018 7:06 PM, Britton Smith wrote:
>      > HI Nick,
>      >
>      > Sadly, yt's FoF and HOP finders don't output member particle
>     information
>      > for the halos, so it might not be possible to use those catalogs
>     to make
>      > merger trees. ytree's merger-tree creation works with FoF catalogs
>      > generated by the inline Gadget halo finder, for which yt supports
>      > extracting member particle information. If you're looking to make
>      > merger-trees, the best route currently is probably
>      > Rockstar/consistent-trees, the outputs of which can be loaded by
>     ytree.
>      >
>      > It is probably a week's worth of work to fix up yt's HOP/FoF
>     finders to
>      > output particle information and then to add support for loading that
>      > into yt.
>      >
>      > Britton
>      >
>      > On Fri, Oct 5, 2018 at 6:07 AM Nick Gnedin <gnedin@fnal.gov
>     <mailto:gnedin@fnal.gov>
>      > <mailto:gnedin@fnal.gov <mailto:gnedin@fnal.gov>>> wrote:
>      >
>      >
>      >     Folks,
>      >
>      >     I am confused about how to compute merger trees with yt.
>     Documentation
>      >   
>       (https://yt-project.org/doc/analyzing/analysis_modules/halo_merger_tree.html?highlight=merger%20tree <https://urldefense.proofpoint.com/v2/url?u=https-3A__yt-2Dproject.org_doc_analyzing_analysis-5Fmodules_halo-5Fmerger-5Ftree.html-3Fhighlight-3Dmerger-2520tree&d=DwMFaQ&c=gRgGjJ3BkIsb5y6s49QqsA&r=7jSLZBQB_2gqGQ3elA922w&m=ln3f04sr7kK9aACk-8EcI3uMd-86E1rnTd5rJ2BW5bg&s=JJEEm3ckzl6tozYzLjLZC1jZ2haYyYXfmwlk8jQHsFQ&e=>
>      >   
>       <https://urldefense.proofpoint.com/v2/url?u=https-3A__yt-2Dproject.org_doc_analyzing_analysis-5Fmodules_halo-5Fmerger-5Ftree.html-3Fhighlight-3Dmerger-2520tree&d=DwMFaQ&c=gRgGjJ3BkIsb5y6s49QqsA&r=7jSLZBQB_2gqGQ3elA922w&m=zeRRll5QvyPrOQIZHiEPcx7nJk84AGxCHVY_xIV4OZ8&s=JcesVppFFSFwh2Hj4CdmDhGC6m2PJwj6igNfcC-vblA&e=>)
>      >
>      >     refers to ytree package, but that package documentation seems to
>      >     indicate that only FoF or Subfind halo catalogs can be
>     converted into a
>      >     merger tree, while the halo finder in yt is HOP.
>      >
>      >     I have run HOP for several snapshots from a simulation. What
>     would you
>      >     recommend to use to make a merger tree from such a data set?
>      >
>      >     Thank you,
>      >
>      >     Nick Gnedin
>      >
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