---
# System prepended metadata

title: DIALS core meeting 2023-03-23
tags: [core meeting]

---

---
name: DIALS core meeting 2023-03-23
tags: core meeting
---

# DIALS core meeting 2023-03-23

## Previous Actions

- [ ] `std::string` support for messagepack. This is used in XFEL module, should try to fix. [`dials/dials#1858`](https://github.com/dials/dials/issues/1858).
    - [X] Is using pickle until this is fixed, so probably good to do
    - [X] AB Added to codecamp list. Might get to this!
    - [X] Looking at this week. Removing seems acceptable and probably the easiest solution
    - [ ] **ND Action**: PR to remove from dials code
- [ ] **ND** Investigate getting `psana` tests running on the DIALS xfel-regression testing
- [ ] Dropping Data Blocks ([#504](https://github.com/cctbx/dxtbx/pull/504))
    - [x] **Action**: DGW WIP migrating data to dials-data
    - [ ] Still failures in DIALS test data
        - [ ] **ND**: Look at DIALS failures and work out what needs to be migrated
- [x] ~~**Aaron action**: Look at [`dxtbx#610`](https://github.com/cctbx/dxtbx/pull/610)~~
- [x] ~~**JBE action:** Look at "Slicing a reflection table drops the identifier map" [`dials#2276`](https://github.com/dials/dials/issues/2276)~~


## Agenda

### dials.cosym applies an incompatible reindexing operator

https://github.com/dials/dials/issues/2320

- Graeme has asked Richard to have a look

### Moving flex tables from dials to dxtbx

https://github.com/dials/dials/pull/2113

- Comments on deprecation instead of direct removal
- **Action**: Solve deprecation issue and merge conflicts, discuss next time.

### Code camp idea?

- Aaron suggests - a few days, couple of hours a day, work on outstanding smaller issues?
- Virtual DIALS code-camp
- Split into sessions:
    - Planning
    - Coding
    - Closeout
- Graeme suggests linking to potential serial workshop being talked about at Cornell/CHESS for ~end of July
    - Initial plans for Week of 17th July, unconfirmed



### AOB?

### NX Writer!
- Aaron been working on: [nxmx_writer.py](https://github.com/cctbx/dxtbx/blob/nxmx_writer/src/dxtbx/format/nxmx_writer.py)
- Converts from any dxtbx format to NXMX HDF5
- Supports appending
- Does not (yet!) support Scan/Gonio
- Flumpy!
- Code camp for the axis??
- **Action: Schedule session to work/finish off**



### Next meeting

Thursday, April 6th, 4pm (BST), 8am (PDT)
