Changes between Version 11 and Version 12 of IdeasNewGui


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Timestamp:
Nov 22, 2016 5:03:31 AM (7 years ago)
Author:
richardh
Comment:

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  • IdeasNewGui

    v11 v12  
    1313Even better, with a single version of each S(Q), radius_effective could always appear, with a three state selector - fitting, fixed or constrained.  
    1414 
    15 * Such a three state selector would be useful to turn constraints on & off without having to edit the constraints tab. Note the current constraints were originally envisaged as operating between two FitPage tabs rather than within a single FitPage tab, which as a general feature would have consequences for polydispersity integrations.  
     15* Such a three state selector would be useful to turn constraints on & off without having to edit the constraints tab. Note the current constraints were originally envisaged as operating between two "Fit Page" tabs rather than within a single "Fit Page" tab, which as a general feature would have consequences for polydispersity integrations.  
    1616 
    17 * Constraints within a single FitPage tab become particularly usful if there is a way to rapdily introduce an extra parameter.  
     17* Constraints within a single "Fit Page" tab become particularly usful if there is a way to rapdily introduce an extra parameter.  
    1818e.g. I want a new parameter R_ratio =(radius_core + thick_shell)/radius_core but don't want to write a re-parametrised model to fit, or more likely fix, the value of R_ratio. We may decide that in sasview the only good way to do this is actually to have to write a new model..... (sigh). 
    1919 
    20 * Introduce a system in the models to flag an issue if too many scale parameters being asked to adjust simultaneously. e.g. FitOneOf(rescale, volfraction, sld_core.AND.sld_shell.AND.sld_solvent ) This is not completely foolproof as it fails if say sld_shell = sld_solvent. In theory the least squares ought to be able to spot perfect correlations then complain also. 
     20* Introduce a system in the models to flag an issue if too many scale parameters being asked to adjust simultaneously. e.g. "Fit One Of(rescale, volfraction, sld_core.AND.sld_shell.AND.sld_solvent )" This is not completely foolproof as it fails if say sld_shell = sld_solvent. In theory the least squares ought to be able to spot perfect correlations then complain also. 
    2121 
    2222'''Plotting'''