---
# System prepended metadata

title: 'PlasmaPy Proton Meeting | Monday 2020 November 23 at 09:00 PT / 12:00 ET'
tags: [' proton radiography', diagnostics, ' particle tracker', ' minutes']

---

---
tags: diagnostics, proton radiography, particle tracker, minutes
---

# PlasmaPy Proton Meeting | Monday 2020 November 23 at 09:00 PT / 12:00 ET

[![hackmd-github-sync-badge](https://hackmd.io/yNnj7vvsQsaR7qSQTYZ85w/badge)](https://hackmd.io/yNnj7vvsQsaR7qSQTYZ85w)

### Video Conference Information
* Instant messaging: [Matrix](https://element.im/app/#/room/#plasmapy:openastronomy.org) and [Gitter](https://gitter.im/PlasmaPy/Lobby)
* [GitHub Minutes Repository](https://github.com/PlasmaPy/plasmapy-meeting-notes)
    * [Proton Sub-directory](https://github.com/PlasmaPy/plasmapy-meeting-notes/tree/master/proton_2020-present)
* [PlasmaPy on GitHub](https://github.com/PlasmaPy/plasmapy) ([pull requests](https://github.com/PlasmaPy/plasmapy/pulls), [issues](https://github.com/PlasmaPy/plasmapy/issues))
* [PlasmaPy Enhancement Proposals on GitHub](https://github.com/PlasmaPy/PlasmaPy-PLEPs)
* [PlasmaPy Google Calendar](https://calendar.google.com/calendar?cid=bzVsb3ZkcW0zaWxsam00ZTlrMDd2cmw5bWdAZ3JvdXAuY2FsZW5kYXIuZ29vZ2xlLmNvbQ)
* GitHub Project: [Line Integrated Diagnostics/Proton Radiography](https://github.com/PlasmaPy/PlasmaPy/projects/21)

## Attendees

1. Erik
2. Dominik

## Action Items

1. [Dominik] in PR 953 give reference to Boris pusher blog and then open issue about making our own notebook
2. [Domink] will ask `xarray` & Astropy about status of unit support...will AstorPy units come in
3. [Erik] communicate to Peter that we should not worry about wranngling units and only add the unit type to `xarray`'s `attrs` field

## Agenda (please feel free to edit or add items)

1. Introductions
2. GitHub Project: [Line Integrated Diagnostics/Proton Radiography](https://github.com/PlasmaPy/PlasmaPy/projects/21)
3. ...
4. ...
5. Issues
    1. ...
    2. ...
6. Pull requests in progress 
    1. [PR #909](https://github.com/PlasmaPy/PlasmaPy/pull/909): Fields & Grids
    2. [PR #953](https://github.com/PlasmaPy/PlasmaPy/pull/953): ParticleTracker refactor: Bring in particle_integrators.py

## Minutes

* PR 953: ParticleTracker
    * first implementation of `numba`
    * the Boris pusher became its own function (instead of a class method)
    * mayber create a notebook describing the Boris pusher method
    * a blog explaing the pusher: https://www.particleincell.com/2011/vxb-rotation/
    * current plan...link the blog and open *Good First* issue for contributing a notebook

* `xarray`'s & irregular girds
    * might be able to use something like `MultiIndex` to setup an irregular coordinate
    * http://xarray.pydata.org/en/stabl/indexing.html&usg=AOvVaw1UhlFDK9JA3Ve6DD-kY8DX

* `xarray`'s & units
    *  `xarray` is working on units with `pint` https://github.com/pydata/xarray/issues/3594
    * https://pint-xarray.readthedocs.io/en/stable/
    * for now we should not try to handle units, but store the array's unit type in the `attrs` of the `xarray`


