[6cfe703] | 1 | #!/usr/bin/python |
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| 2 | |
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| 3 | # fitDialog.py |
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| 4 | |
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| 5 | import wx |
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[e40b651] | 6 | from PlotPanel import PlotPanel |
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| 7 | from plottables import Theory1D |
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| 8 | import math,pylab,fittings |
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[6cfe703] | 9 | class LinearFit(wx.Dialog): |
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[e40b651] | 10 | #def __init__(self, parent, id, title): |
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| 11 | def __init__(self, parent, plottable, push_data, id, title): |
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[1bde57a] | 12 | wx.Dialog.__init__(self, parent, id, title, size=(550, 300)) |
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[6cfe703] | 13 | """ |
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| 14 | for the fit window |
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| 15 | """ |
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| 16 | self.parent = parent |
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[e40b651] | 17 | #dialog panel self call function to plot the fitting function |
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| 18 | self.push_data = push_data |
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| 19 | #dialog self plottable |
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| 20 | self.plottable = plottable |
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| 21 | |
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| 22 | #Dialog interface |
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[6cfe703] | 23 | panel = wx.Panel(self, -1, style=wx.SIMPLE_BORDER) |
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| 24 | vbox = wx.BoxSizer(wx.VERTICAL) |
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| 25 | sizer = wx.GridBagSizer(5,0) |
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| 26 | vbox.Add(panel, 1, wx.EXPAND | wx.ALL) |
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| 27 | |
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[f63f5ff] | 28 | self.tcA = wx.TextCtrl(panel, -1,size=(120,20),style=wx.SIMPLE_BORDER) |
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| 29 | self.tcErrA = wx.TextCtrl(panel, -1,size=(120,20),style=wx.SIMPLE_BORDER) |
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| 30 | self.tcB = wx.TextCtrl(panel, -1,size=(120,20),style=wx.SIMPLE_BORDER) |
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| 31 | self.tcErrB = wx.TextCtrl(panel, -1,size=(120,20),style=wx.SIMPLE_BORDER) |
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| 32 | self.tcChi = wx.TextCtrl(panel, -1,size=(120,20),style=wx.SIMPLE_BORDER) |
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[d490a02] | 33 | self.tcXmin = wx.TextCtrl(panel,-1,size=(120,20),style=wx.SIMPLE_BORDER) |
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| 34 | self.tcXmax = wx.TextCtrl(panel,-1,size=(120,20),style=wx.SIMPLE_BORDER) |
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[6cfe703] | 35 | self.btFit =wx.Button(panel,-1,'Fit' ) |
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| 36 | btClose =wx.Button(panel, wx.ID_CANCEL,'Close' ) |
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| 37 | |
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| 38 | ix = 1 |
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| 39 | iy = 1 |
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[1bde57a] | 40 | |
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[6cfe703] | 41 | sizer.Add(wx.StaticText(panel, -1, 'y = Ax +B'),(iy, ix)) |
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| 42 | ix = 1 |
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| 43 | iy += 2 |
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[1bde57a] | 44 | |
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[6cfe703] | 45 | sizer.Add(wx.StaticText(panel, -1, 'Param A'),(iy, ix)) |
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| 46 | ix += 1 |
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| 47 | sizer.Add(self.tcA, (iy, ix)) |
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| 48 | ix += 1 |
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| 49 | sizer.Add(wx.StaticText(panel, -1, '+/-'),(iy, ix)) |
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| 50 | ix += 1 |
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| 51 | sizer.Add(self.tcErrA, (iy, ix)) |
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| 52 | iy += 1 |
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| 53 | ix = 1 |
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| 54 | sizer.Add(wx.StaticText(panel, -1, 'Param B'),(iy, ix)) |
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| 55 | ix += 1 |
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| 56 | sizer.Add(self.tcB, (iy, ix)) |
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| 57 | ix += 1 |
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[e40b651] | 58 | sizer.Add(wx.StaticText(panel, -1, '+/-'),(iy, ix)) |
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[6cfe703] | 59 | ix += 1 |
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| 60 | sizer.Add(self.tcErrB, (iy, ix)) |
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| 61 | iy += 1 |
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| 62 | ix = 1 |
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| 63 | sizer.Add(wx.StaticText(panel, -1, 'Chi ^{2}'),(iy, ix)) |
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| 64 | ix += 1 |
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| 65 | sizer.Add(self.tcChi, (iy, ix)) |
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| 66 | iy += 1 |
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| 67 | ix = 1 |
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| 68 | sizer.Add(wx.StaticText(panel, -1, 'Xmin'),(iy, ix)) |
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| 69 | ix += 2 |
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| 70 | sizer.Add(wx.StaticText(panel, -1, 'Xmax'),(iy, ix)) |
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| 71 | iy += 1 |
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| 72 | ix = 1 |
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| 73 | sizer.Add(self.tcXmin, (iy, ix)) |
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| 74 | ix += 2 |
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| 75 | sizer.Add(self.tcXmax, (iy, ix)) |
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| 76 | iy += 1 |
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| 77 | ix = 1 |
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| 78 | sizer.Add(self.btFit, (iy, ix)) |
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[e40b651] | 79 | self.btFit.Bind(wx.EVT_BUTTON, self._onFit) |
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[6cfe703] | 80 | ix += 2 |
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| 81 | sizer.Add(btClose, (iy, ix)) |
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| 82 | |
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| 83 | panel.SetSizer(sizer) |
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| 84 | self.SetSizer(vbox) |
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| 85 | self.Centre() |
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[e40b651] | 86 | # Receives the type of model for the fitting |
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| 87 | from LineModel import LineModel |
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| 88 | self.model = LineModel() |
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| 89 | # new data for the fit |
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| 90 | self.file_data1 = Theory1D(x=[], y=[], dy=None) |
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[5789654] | 91 | self.file_data1.name = "Fit" |
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[e40b651] | 92 | |
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[6cfe703] | 93 | def _onFit(self ,event): |
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[e40b651] | 94 | |
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| 95 | print "we are on fit" |
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| 96 | temp =[] |
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| 97 | xmin = self._checkVal(self.tcXmin.GetValue()) |
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| 98 | xmax = self._checkVal(self.tcXmax.GetValue()) |
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[5789654] | 99 | |
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| 100 | #store the values of View in x,y, dx,dy |
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| 101 | x,y,dx,dy=self.plottable.returnValuesOfView() |
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| 102 | |
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[f63f5ff] | 103 | if x != []: |
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[e40b651] | 104 | if xmin !=None and xmax != None: |
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| 105 | for j in range(len(x)): |
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| 106 | if x[j]>xmin and x[j]<xmax: |
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| 107 | temp.append(self.model.run(x[j])) |
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[5789654] | 108 | |
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[e40b651] | 109 | for y_i in temp: |
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| 110 | tempdy.append(math.sqrt(y_i)) |
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| 111 | else: |
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| 112 | # x has a default value in case the user doesn't load data |
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| 113 | for x_i in x: |
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| 114 | temp.append(self.model.run(x_i)) |
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[5789654] | 115 | |
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[f63f5ff] | 116 | self.tcXmin.SetValue(str(min(x))) |
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| 117 | self.tcXmax.SetValue(str(max(x))) |
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[e40b651] | 118 | xmin = self._checkVal(self.tcXmin.GetValue()) |
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| 119 | xmax = self._checkVal(self.tcXmax.GetValue()) |
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| 120 | |
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| 121 | self.file_data1.x =x |
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| 122 | self.file_data1.y =temp |
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[5789654] | 123 | |
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[061775ff] | 124 | self.file_data1.dx=None |
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| 125 | self.file_data1.dy=None |
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[5789654] | 126 | self.file_data1.reset_view() |
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[e40b651] | 127 | |
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| 128 | # Display the fittings values |
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| 129 | default_A = self.model.getParam('A') |
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| 130 | default_B = self.model.getParam('B') |
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| 131 | cstA = fittings.Parameter(self.model, 'A', default_A) |
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| 132 | cstB = fittings.Parameter(self.model, 'B', default_B) |
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| 133 | chisqr, out, cov = fittings.sansfit(self.model, |
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[5789654] | 134 | [cstA, cstB],x, y,dy,min(x),max(x)) |
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[e40b651] | 135 | |
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[5789654] | 136 | |
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| 137 | #Check that cov and out are iterable before displaying them |
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[f63f5ff] | 138 | if cov ==None: |
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| 139 | errA =str(0.0) |
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| 140 | errB =str(0.0) |
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| 141 | else: |
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| 142 | errA= str(math.sqrt(cov[0][0])) |
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| 143 | errB= str(math.sqrt(cov[1][1])) |
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| 144 | if out==None: |
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| 145 | cstA=str(0.0) |
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| 146 | cstB=str(0.0) |
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| 147 | else: |
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| 148 | cstA=str(out[0]) |
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| 149 | cstB=str(out[1]) |
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[5789654] | 150 | |
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| 151 | self.model.setParam('A', float(cstA)) |
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| 152 | self.model.setParam('B', float(cstB)) |
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| 153 | # Create new data plottable with result |
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| 154 | self.file_data1.y = [] |
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| 155 | |
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| 156 | for x_i in x: |
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| 157 | self.file_data1.y.append(self.model.run(x_i)) |
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| 158 | #Send the data to display to the PlotPanel |
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| 159 | self.file_data1.reset_view() |
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| 160 | self.push_data(self.file_data1) |
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| 161 | # Display the fitting value on the Fit Dialog |
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[f63f5ff] | 162 | self._onsetValues(cstA, cstB, errA,errB,str(chisqr)) |
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[e40b651] | 163 | |
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[6cfe703] | 164 | def _onsetValues(self,cstA,cstB,errA,errB,Chi): |
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| 165 | |
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| 166 | self.tcA.SetValue(cstA) |
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| 167 | self.tcB.SetValue(cstB) |
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[f63f5ff] | 168 | self.tcErrA.SetValue(errA) |
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| 169 | self.tcErrB.SetValue(errB) |
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[6cfe703] | 170 | self.tcChi.SetValue(Chi) |
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[e40b651] | 171 | |
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| 172 | def _returnPlottable(self): |
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| 173 | return self.file_data1 |
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| 174 | |
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[6cfe703] | 175 | def _checkVal(self,value): |
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| 176 | """ |
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| 177 | Ensure that fields parameter contains a value |
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| 178 | before sending to fit in Plotter1D |
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| 179 | """ |
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| 180 | try: |
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| 181 | param = float(value) |
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| 182 | except: |
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| 183 | param = None |
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| 184 | return param |
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| 185 | if __name__ == "__main__": |
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| 186 | app = wx.App() |
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| 187 | dialog=LinearFit(None, -1, 'Fitting') |
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| 188 | dialog.ShowModal() |
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| 189 | app.MainLoop() |
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| 190 | |
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| 191 | |
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