CodeCampIV_Planning_WorkingGroups_SasmodelsMinutes

Autogenerated parts of the model

• #332{.closed .ticket} [PAK-9] fix cos(theta) issue on angular dispersion
• [PAK-9] mixture models/product models
• [PAK-8] tied parameters
• #363{.closed .ticket} [PAK-7] linearize for loop to avoid OpenCL problems when model runs too long
• [PAK-5] vector parameters
• [PAK-0] magnetism on each of the sld parameters
• [MG-?] autogenerate figures for docs from demo parameters (or maybe default)
• [PAK?-7] need an easy way to reparameterize an existing model
• [PAK?-?] can't currently reference other models from within one model
• #492{.closed .ticket} reparameterize orientation

Existing models

• [various] #364{.closed .ticket} , #377{.closed .ticket} , #439{.closed .ticket} , #410{.closed .ticket} , #288{.closed .ticket} , #347{.closed .ticket} , #472{.closed .ticket} , #484{.closed .ticket} fix problems with specific models (see tickets)
• [various] clean up model code (e.g., use J1c, sinc, etc.)
• #509{.closed .ticket} [WP] move from NR J1 (higher precision---current is 1e-9;licensing issues) l
• #19{.closed .ticket} [steve, richard?] check docs

Integration

• slowly evolve the sasview model api
• #505{.closed .ticket} Thoroughly test sasview with new sasmodels (e.g., is sas.models. SubComponent needed/supported)
• #348{.closed .ticket} [MG] preserve parameter order using ordered dict, with removing sort in GUI
• #506{.closed .ticket} introspect to find available models
• redo interface to resolution within sasview GUI so that it doesn't recalc q every time
• show min max in gui

GUI aspects

• show components separately for product and sum models
• weighted sum of several models (mixture models) to avoid e.g., p1_p2_radius
• can we do mixture models "on the fly"
• #504{.closed .ticket} generate new model.py file from GUI
• #411{.closed .ticket} no stop button for constrained fits
• #473{.new .ticket}

Bumps improvements

• #270{.closed .ticket} check bumps error bars
• #456{.closed .ticket} better handling of bumps plots
• integer parameters not fit properly

Parameter enhancements

• display ER and VR when available
• access to effective radius in constraints
• don't use automatic constraint to set effective radius in product model
• allow model to define the derived parameters (possibly polydisperse)
• allow parameters not part of existing models for use in constraints (e.g., by having a zero model with k parameters)

Fitting Enhancements

• deweighting SAXS fits
• downsampling SAXS data
• assign cost to structure in the residuals
• mask of middle part of data (e. g., spurions)