linearized models need to account for resolution smearing (Trac #592)

[butlerpd]

Currently resolution smearing is not accounted for and thus heavily smeared data, such as USANS slit smeared data give totally wrong answers, particularly for I0 which is several orders of magnitude wrong. however even pinhole resolution at medium q can slightly alter the value of Rg.

Also suggest taking the opportunity to ditch lineModel.py and fitting.py in favor of using linear regression, perhaps from bumps, directly in fitDialog. Also could clean up what looks like dead code?

Migrated from http://trac.sasview.org/ticket/592

{
    "status": "new",
    "changetime": "2017-10-23T12:50:34",
    "_ts": "2017-10-23 12:50:34.322564+00:00",
    "description": "Currently resolution smearing is not accounted for and thus heavily smeared data, such as USANS slit smeared data give totally wrong answers, particularly for I0 which is several orders of magnitude wrong. however even pinhole resolution at medium q can slightly alter the value of Rg.\n\nAlso suggest taking the opportunity to ditch lineModel.py and fitting.py in favor of using linear regression, perhaps from bumps, directly in fitDialog.  Also could clean up what looks like dead code?\n\n",
    "reporter": "butler",
    "cc": "",
    "resolution": "",
    "workpackage": "Plotting/Graphing Enhancements",
    "time": "2016-07-11T03:50:24",
    "component": "SasView",
    "summary": "linearized models need to account for resolution smearing",
    "priority": "major",
    "keywords": "",
    "milestone": "SasView 5.0.0",
    "owner": "",
    "type": "enhancement"
}

[butlerpd]

Trac update at 2017/10/23 12:50:34: butler changed milestone from "SasView Next Release +1" to "SasView 5.0.0"