[yt-dev] yt Particle Plots & openPMD Frontend

[John Zuhone]

The latest development version of yt now has “unit systems”:

http://yt-project.org/docs/dev/analyzing/units/unit_systems.html <http://yt-project.org/docs/dev/analyzing/units/unit_systems.html>

But Nathan is correct—this doesn’t affect the Tesla unit per se—it should be fine. If we could get a script and a more specific error that you are seeing, that would help. 

> On May 24, 2016, at 12:30 PM, Huebl, Axel <a.huebl at hzdr.de> wrote:
> 
> Hi yt-devs,
> 
> I am forwarding this conversation to the public list to keep it open for
> others to join in and to build up a record that might help others.
> 
> Our new student Fabian updated our frontend and implemented particle
> readers. Unfortunately some details of the particle "fields" still cause
> some bumps that we can not get our head around.
> 
> We are now able to read fields and particles, even chunk-wise, and can
> work with the data we read in python scripts via the all_data() method.
> 
> Nevertheless, using the particle scatter plots such as yt.ParticlePlot
> seems not to work. We have some problems with unions / the "all" group
> and the fact that we have several particle species (e.g., "hot
> electrons", "cold electrons", "helium ions", "nitrogen ions", etc.)
> 
> Also since the last rebase: did someone recently change the unit system
> in yt? T for "Tesla" seems not to be understood any more. Is there a
> changelog somewhere available? Do we have to describe our data in cgs / mks?
> 
> Would someone be interested for a quick heads up via e.g., skype /
> web-rtc so we can ask specific questions?
> 
> Fabian is around on Tuesdays and Fridays, something like early CA time,
> and late GER time usually works great (e.g., 9pm-PDT / 6pm-CEST).
> 
> Our current branch HEAD can be found here (->yt->frontends->openPMD):
>  https://bitbucket.org/C0nsultant/openpmd/src?at=yt
> 
> And an example script is attached.
> 
> 
> Thanks a lot!
> Axel
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