source:sans/Dev/trunk/NCNR_User_Procedures/SANS/Analysis/Models/DAB_model_v40.ipf@379

Last change on this file since 379 was 379, checked in by srkline, 15 years ago

Removed Angstrom symbol (Mac code) and replaced it with simply a capital "A" so strange symbols won't appear anymore on Win.

File size: 4.1 KB
Line
1#pragma rtGlobals=1             // Use modern global access method.
2#pragma IgorVersion = 6.0
3
4////////////////////////////////////////////////////
5//      C. Glinka, 11-22-98
6////////////////
7
8
9                                                                //Debye-Anderson-Brumberger
10
11
12Proc PlotDAB_Model(num,qmin,qmax)
13        Variable num=512, qmin=.001, qmax=.7
14        Prompt num "Enter number of data points for model: "
15        Prompt qmin "Enter minimum q-value (A^1) for model: "
16         Prompt qmax "Enter maximum q-value (A^1) for model: "
17//
18        Make/O/D/n=(num) xwave_DAB, ywave_DAB
19        xwave_DAB =  alog(log(qmin) + x*((log(qmax)-log(qmin))/num))
20        Make/O/D coef_DAB = {10.0, 40, 1.0}
21        make/o/t parameters_DAB = {"Scale Factor, A ", "Correlation Length (A)", "Incoherent Bgd (cm-1)"}
22        Edit parameters_DAB, coef_DAB
23        Variable/G root:g_DAB
24        g_DAB  := DAB_Model(coef_DAB, ywave_DAB, xwave_DAB)
25//      ywave_DAB  := DAB_Model(coef_DAB, xwave_DAB)
26        Display ywave_DAB vs xwave_DAB
27        ModifyGraph marker=29, msize=2, mode=4
28        ModifyGraph log(left)=1
29        Label bottom "q (A\\S-1\\M) "
30        Label left "Debye-Anderson-Brumberger Model (cm\\S-1\\M)"
31        AutoPositionWindow/M=1/R=\$(WinName(0,1)) \$WinName(0,2)
32
34End
35
36////////////////////////////////////////////////////
37// - sets up a dependency to a wrapper, not the actual SmearedModelFunction
38Proc PlotSmearedDAB_Model(str)
39        String str
40        Prompt str,"Pick the data folder containing the resolution you want",popup,getAList(4)
41
42        // if any of the resolution waves are missing => abort
43        if(ResolutionWavesMissingDF(str))               //updated to NOT use global strings (in GaussUtils)
44                Abort
45        endif
46
47        SetDataFolder \$("root:"+str)
48
49        // Setup parameter table for model function
50        Make/O/D smear_coef_DAB = {10.0, 40, 1.0}                                       //model  coef values to match unsmeared model above
51        make/o/t smear_parameters_DAB = {"Scale Factor, A ", "Correlation Length (A)", "Incoherent Bgd (cm-1)"}// parameter names
52        Edit smear_parameters_DAB,smear_coef_DAB                                        //display parameters in a table
53
54        // output smeared intensity wave, dimensions are identical to experimental QSIG values
55        // make extra copy of experimental q-values for easy plotting
56        Duplicate/O \$(str+"_q") smeared_DAB,smeared_qvals                               //
57        SetScale d,0,0,"1/cm",smeared_DAB                                                       //
58
59        Variable/G gs_DAB=0
60        gs_DAB := fSmearedDAB_Model(smear_coef_DAB,smeared_DAB,smeared_qvals)   //this wrapper fills the STRUCT
61
62        Display smeared_DAB vs smeared_qvals                                                                    //
63        ModifyGraph log=1,marker=29,msize=2,mode=4
64        Label bottom "q (A\\S-1\\M)"
65        Label left "Debye-Anderson-Brumberger Model (cm\\S-1\\M)"
66        AutoPositionWindow/M=1/R=\$(WinName(0,1)) \$WinName(0,2)
67
68        SetDataFolder root:
70End
71
72//AAO version
73Function DAB_model(cw,yw,xw) : FitFunc
74        Wave cw,yw,xw
75
76#if exists("DAB_modelX")
77        yw = DAB_modelX(cw,xw)
78#else
79        yw = fDAB_model(cw,xw)
80#endif
81        return(0)
82End
83
84Function fDAB_model(w,x) : FitFunc
85        Wave w
86        Variable x
87//       Input (fitting) variables are:
88        //[0] scale factor
89        //[1] correlation range
90        //[2] incoherent background
91//      give them nice names
92        Variable Izero, range, incoh
93        Izero = w[0]
94        range = w[1]
95        incoh = w[2]
96//      local variables
97        Variable inten, qval
98//      x is the q-value for the calculation
99        qval = x
100//      do the calculation and return the function value
101
102        inten = Izero/(1 + (qval*range)^2)^2 + incoh
103        Return (inten)
104End
105/////////////////////////////////////////////////////////////////////////////////
106
107// this is all there is to the smeared calculation!
108Function SmearedDAB_Model(s) :FitFunc
109        Struct ResSmearAAOStruct &s
110
111////the name of your unsmeared model is the first argument
112        Smear_Model_20(DAB_Model,s.coefW,s.xW,s.yW,s.resW)
113
114        return(0)
115End
116
117//wrapper to calculate the smeared model as an AAO-Struct
118// fills the struct and calls the ususal function with the STRUCT parameter
119//
120// used only for the dependency, not for fitting
121//
122Function fSmearedDAB_Model(coefW,yW,xW)
123        Wave coefW,yW,xW
124
125        String str = getWavesDataFolder(yW,0)
126        String DF="root:"+str+":"
127
128        WAVE resW = \$(DF+str+"_res")
129
130        STRUCT ResSmearAAOStruct fs
131        WAVE fs.coefW = coefW
132        WAVE fs.yW = yW
133        WAVE fs.xW = xW
134        WAVE fs.resW = resW
135
136        Variable err
137        err = SmearedDAB_Model(fs)
138
139        return (0)
140End
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