qt5 user level, changes to model tab (Trac #1116)

[RichardHeenan]

Consider adding "+" symbol drop downs with details for S(Q) radius & volume parameters, analogous to those for polydisperse radii.

Migrated from http://trac.sasview.org/ticket/1116

{
    "status": "assigned",
    "changetime": "2018-09-09T08:00:06",
    "_ts": "2018-09-09 08:00:06.919320+00:00",
    "description": "Consider adding \"+\" symbol drop downs with details for S(Q) radius & volume parameters, analogous to those for polydisperse radii.",
    "reporter": "richardh",
    "cc": "",
    "resolution": "",
    "workpackage": "Beta Approximation Project",
    "time": "2018-07-01T21:10:57",
    "component": "SasView",
    "summary": "qt5 user level, changes to model tab",
    "priority": "major",
    "keywords": "",
    "milestone": "SasView 5.0.0",
    "owner": "tcbennun",
    "type": "enhancement"
}

[sasview-bot]

Trac update at 2018/07/24 14:34:38:

• tcbennun commented:

Following today's conf call I'll focus on this approach.

• tcbennun changed owner from "" to "tcbennun"
• tcbennun changed status from "new" to "assigned"

[sasview-bot]

Trac update at 2018/07/24 14:34:51: tcbennun changed milestone from "SasView Next Release +1" to "SasView 5.0.0"

[sasview-bot]

Trac update at 2018/07/24 15:07:48: tcbennun commented:

opened JIRA issue:

---

'''SASVIEW-967'''
'''tcbennun, 24 Jul 2018 16:05'''

As part of the greater beta approximation project, the following features shall be implemented in the Model tab of fit pages:

• In the parameter table, the S(Q) parameters radius_effective and volfraction shall have sub-items that allow user choice between generation from P(Q) model, or free/fitting.
• An option to enable the beta approximation for the current model shall be added.

These changes are compatible only with product models, i.e. a simple P(Q)*S(Q) model. The GUI additions here should leave room for the future support of mixture models with one or more products, i.e. (P_1(Q) + ...)*S_1(Q) + (P_i(Q) + ...)*S_2(Q) + ...

In product models, the flag for enabling beta approximation will manifest as a model parameter with possible values of 0 or 1.

[sasview-bot]

Trac update at 2018/08/02 16:08:46:

• tcbennun changed attachment from "" to "functional_constraint_enabled.png"
• tcbennun commented:

Example of enabled functional constraint in QT GUI, as child row of the parameter

[sasview-bot]

Trac update at 2018/08/02 16:09:03:

• tcbennun changed attachment from "" to "functional_constraint_disabled.png"
• tcbennun commented:

Example of disabled functional constraint in QT GUI, as child row of the parameter

[sasview-bot]

Trac update at 2018/08/02 16:12:12: tcbennun commented:

In ESS_GUI_beta_approx, added demonstration of what it may look like to choose between constraining effective_radius (for example) and letting it be a fittable parameter.

When constrained (I call it a 'functional constraint') to the value of some_func:

[[Image(functional_constraint_enabled.png)]]

And when it is fittable/free:

[[Image(functional_constraint_disabled.png)]]

Selecting a function to use as a constraint changes the row visually, and removes user-input values. It could enable the 'Value' column to show the calculated parameter, too.

[sasview-bot]

Trac update at 2018/08/09 10:27:19:

• tcbennun changed attachment from "" to "calculation_mode.png"
• tcbennun commented:

Setting of product calculation mode in QT GUI.

[sasview-bot]

Trac update at 2018/08/09 10:28:03: tcbennun commented:

A product calculation mode combo box has been added; it controls the beta_mode parameter injected into product models (only in the beta_approx sasmodels branch).

[[Image(calculation_mode.png)]]

The possible options are taken from the limits field of the beta_mode parameter.

[sasview-bot]

Trac update at 2018/08/09 10:28:27: tcbennun commented:

Note: the model is re-calculated immediately upon selection of a calculation mode.

[sasview-bot]

Trac update at 2018/08/20 08:54:19: tcbennun commented:

After correspondence with Paul Kienzle, it looks appropriate to treat beta_mode as a normal model parameter, but one that has fixed choices and is not fittable. Such a parameter will be displayed in the GUI in the parameter table, but with a combo-box for selection. This approach allows for further addition of such fixed parameters; also, in the case of complicated mixture models where more than one product model is a constituent, the separate beta_mode parameters will be clear.

[sasview-bot]

Trac update at 2018/08/21 12:42:28: tcbennun changed attachment from "" to "beta_mode_parameter.png"

[sasview-bot]

Trac update at 2018/08/21 12:44:35: tcbennun commented:

The beta mode parameter is now part of the parameter table (its location in the table is not yet fixed). It is a non-fittable (therefore non-checkable) parameter:

[[Image(beta_mode_parameter.png)]]

The possible options are PS or P(1+beta*(S-1)); these correspond internally to 0 or 1 (to turn beta mode off or on). It is perfectly easy to rename the parameter or add further options without breaking the GUI because it is treated generically.

[sasview-bot]

Trac update at 2018/09/09 08:00:06: tcbennun commented:

The features detailed above in my previous comments are now merged into ESS_GUI.

Additionally, ESS_GUI_iss1052 has functionality for effective radius options, see #888.

Volume options will go down a similar route.