| 1 | hm.selectStore("xrayfluo.his") |
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| 2 | histoGamDet = hm.load1D(1) |
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| 3 | |
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| 4 | # prepare to fit the histo h1 |
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| 5 | # creating a vector from a histogram |
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| 6 | v1=vm.from1D(histoGamDet) |
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| 7 | |
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| 8 | vm.list() |
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| 9 | |
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| 10 | # create a new fitter: |
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| 11 | fit=Fitter() |
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| 12 | # perform fit using the histogram |
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| 13 | fit.setData(v1) |
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| 14 | v1.toAscii("EnergyDep.dat") |
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| 15 | # set the model to "gaussian" |
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| 16 | fit.setModel("G") |
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| 17 | # define (and init) parameters for fit function |
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| 18 | fit.setParameter("amp" ,653.) |
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| 19 | amp = fit.fitParameter ("amp") |
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| 20 | amp.setStart(653.) |
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| 21 | amp.setStep(1.) |
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| 22 | amp.setBounds(500.,700.) |
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| 23 | # ... for these the order is relevant |
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| 24 | fit.setParameter("mean" ,1.72) |
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| 25 | mean = fit.fitParameter ("mean") |
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| 26 | mean.setStart(1.72) |
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| 27 | mean.setStep(0.01) |
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| 28 | mean.setBounds(1.62,1.82) |
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| 29 | |
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| 30 | # ... as there is no "intelligent parsing" possible :-( |
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| 31 | fit.setParameter("sigma",.1) |
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| 32 | sigma = fit.fitParameter ("sigma") |
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| 33 | sigma.setStart(0.1) |
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| 34 | sigma.setStep(0.005) |
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| 35 | sigma.setBounds(0.01,0.3) |
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| 36 | # perform fit using the histogram |
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| 37 | fit.chiSquareFit() |
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| 38 | fit.printResult() |
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| 39 | # get vector wiht fitted function for overlay |
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| 40 | |
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| 41 | vfit=fit.fittedVector(vm) |
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| 42 | |
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| 43 | # comment this if you want to have a look at the resource file for NAG |
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| 44 | shell("rm -f e04ucc.r") |
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| 45 | |
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| 46 | #pl.zoneOption("mirrorAxis","yes") |
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| 47 | pl.xAxisOption("title","energy release in the detector") |
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| 48 | pl.yAxisOption("label","counts") |
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| 49 | # set error bars (full version) |
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| 50 | #pl.dataOption("Representation","Error") |
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| 51 | # plot data with overlayed fit-result |
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| 52 | pl.textStyle("fontsize","10.") |
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| 53 | pl.dataStyle("linecolor", "green") |
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| 54 | pl.dataOption("legend","fit") |
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| 55 | #pl.dataStyle("lineshape","dashdot") |
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| 56 | pl.plot(vfit) |
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| 57 | |
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| 58 | wait() |
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| 59 | pl.psPrint("fitEnegyDep.ps") |
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| 60 | pl.reset() |
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| 61 | |
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| 62 | pl.textStyle("fontsize","10.") |
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| 63 | pl.dataStyle("linecolor", "red") |
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| 64 | pl.dataOption("legend","energyDeposit") |
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| 65 | pl.plot(v1) |
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| 66 | wait() |
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| 67 | |
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| 68 | pl.dataStyle("linecolor", "green") |
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| 69 | pl.dataOption("legend","fit") |
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| 70 | pl.dataStyle("lineshape","dashdot") |
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| 71 | pl.overlay(vfit) |
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| 72 | |
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| 73 | pl.psPrint("fitEnegyOverl.ps") |
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| 74 | pl.reset() |
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| 75 | del fit |
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| 76 | |
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| 77 | |
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