provide reader for canSAS 2d (hdf5) format (Trac #237)

[sasview-bot]

Migrated from http://trac.sasview.org/ticket/237

{
    "status": "closed",
    "changetime": "2016-08-05T17:29:08",
    "_ts": "2016-08-05 17:29:08.560286+00:00",
    "description": "",
    "reporter": "Tobias Richter",
    "cc": "",
    "resolution": "fixed",
    "workpackage": "SasView Framework Enhancements",
    "time": "2014-04-04T16:42:11",
    "component": "SasView",
    "summary": "provide reader for canSAS 2d (hdf5) format",
    "priority": "critical",
    "keywords": "",
    "milestone": "SasView 4.0.0",
    "owner": "krzywon",
    "type": "enhancement"
}

[butlerpd]

Trac update at 2015/01/30 02:24:02: butler changed workpackage from "" to "SasView Framework Enhancements"

[ajj]

Trac update at 2016/02/28 11:16:36:

• ajj changed milestone from "SasView Next Release +1" to "SasView 4.0.0"
• ajj changed owner from "" to "krzywon"
• ajj changed priority from "major" to "critical"
• ajj changed status from "new" to "assigned"

[sasview-bot]

Trac update at 2016/03/08 20:48:04: krzywon commented:

A file specification and sample data set would be useful for this. Could someone upload or link to either/both prior to CodeCamp IV?

[smk78]

Trac update at 2016/03/09 15:28:45: smk78 commented:

See http://cansas-org.github.io/canSAS2012/

[smk78]

Trac update at 2016/03/09 15:31:25: smk78 commented:

I don't know what the current status of NXcansas is. PeteJ and Tobias are probably best-placed to comment, though Andrew may know?

However, is any application actually generating files in this format at present? I'm not aware of any that are.

[ajj]

Trac update at 2016/03/11 21:02:19: ajj commented:

Example datasets here:

https://github.com/canSAS-org/canSAS2012/tree/master/examples/contributions

Use the ones at the top level there - they are converted NG3 magnetic field series

NXCansas is basically done but I struggle with the nexus repo. Tobias is going to send round something later this month.

[sasview-bot]

Trac update at 2016/06/20 17:44:17: krzywon commented:

I have a reader that can load both 1D and 2D data sets, but only if they are in independent 'SASentry's. All SASdata objects are lumped into a single Data1D or Data2D object. I am already working on allowing for both 1D and 2D data within the same SASentry and should have that ready prior to the final 4.0 release.

[smk78]

Trac update at 2016/06/20 17:56:32: smk78 commented:

The 'version 0' hdf cansas file I circulated the other month provoked quite a lot of discussion in the Data Format WG and generated several tweaks to the output. These are currently being worked into Mantid. I'll put out a revised file for testing when available.

[smk78]

Trac update at 2016/07/11 12:31:59: smk78 commented:

The CanSAS Data Format Working Group has now 'approved' the latest version of the NXcanSAS hdf format. Examples of 1D and 2D files have been posted to https://github.com/canSAS-org/NXcanSAS_examples/tree/master/Mantid. They are the *_v3.h5 files. We should now support this format in !SasView.

[sasview-bot]

Trac update at 2016/07/13 17:38:30: krzywon commented:

My latest push can read in the v3 files in 1D and 2D format. I kept a few vestiges for the previous version to be sure there is backward compatibility with any existing data sets floating around.

[smk78]

Trac update at 2016/07/22 15:04:27: smk78 commented:

Seems to work. Am closing the ticket.

[smk78]

Trac update at 2016/07/22 15:04:35:

• smk78 changed resolution from "" to "fixed"
• smk78 changed status from "assigned" to "closed"

[sasview-bot]

Trac update at 2016/07/22 16:40:47:

• krzywon commented:

I'm glad to hear the reader works! I'm reopening this ticket as a reminder to myself to write unit tests.

• krzywon changed resolution from "fixed" to ""
• krzywon changed status from "closed" to "reopened"

[sasview-bot]

Trac update at 2016/08/05 12:11:49:

• krzywon commented:

I refactored the Cansas HDF5 reader to allow any number of SASdata with a single SASentry and and number of SASentry within a single data file. Each SASdata object becomes its own Data1D/2D object and the reader allows for 1D and 2D data within the same SASentry.

I added two unit tests that can load in a data set with a single SASdata in a single SASentry and another that loads multiple of each.

• krzywon changed resolution from "" to "fixed"
• krzywon changed status from "reopened" to "closed"

[smk78]

Trac update at 2016/08/05 17:06:16: smk78 commented:

Will you be doing the same for Cansas 1D XML files with multiple SASentry and SASdata?

[sasview-bot]

Trac update at 2016/08/05 17:29:08: krzywon commented:

I'm working on it right now.