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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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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9 | class LinearFit(wx.Dialog): |
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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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12 | wx.Dialog.__init__(self, parent, id, title, size=(500, 300)) |
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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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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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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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28 | self.tcA = wx.TextCtrl(panel, -1,style=wx.SIMPLE_BORDER) |
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29 | self.tcErrA = wx.TextCtrl(panel, -1,style=wx.SIMPLE_BORDER) |
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30 | self.tcB = wx.TextCtrl(panel, -1,style=wx.SIMPLE_BORDER) |
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31 | self.tcErrB = wx.TextCtrl(panel, -1,style=wx.SIMPLE_BORDER) |
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32 | self.tcChi = wx.TextCtrl(panel, -1,style=wx.SIMPLE_BORDER) |
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33 | self.tcXmin = wx.TextCtrl(panel,-1,style=wx.SIMPLE_BORDER) |
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34 | self.tcXmax = wx.TextCtrl(panel,-1,style=wx.SIMPLE_BORDER) |
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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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40 | sizer.Add(wx.StaticText(panel, -1, 'y = Ax +B'),(iy, ix)) |
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41 | ix = 1 |
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42 | iy += 2 |
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43 | sizer.Add(wx.StaticText(panel, -1, 'Param A'),(iy, ix)) |
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44 | ix += 1 |
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45 | sizer.Add(self.tcA, (iy, ix)) |
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46 | ix += 1 |
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47 | sizer.Add(wx.StaticText(panel, -1, '+/-'),(iy, ix)) |
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48 | ix += 1 |
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49 | sizer.Add(self.tcErrA, (iy, ix)) |
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50 | iy += 1 |
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51 | ix = 1 |
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52 | sizer.Add(wx.StaticText(panel, -1, 'Param B'),(iy, ix)) |
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53 | ix += 1 |
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54 | sizer.Add(self.tcB, (iy, ix)) |
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55 | ix += 1 |
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56 | sizer.Add(wx.StaticText(panel, -1, '+/-'),(iy, ix)) |
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57 | ix += 1 |
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58 | sizer.Add(self.tcErrB, (iy, ix)) |
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59 | iy += 1 |
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60 | ix = 1 |
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61 | sizer.Add(wx.StaticText(panel, -1, 'Chi ^{2}'),(iy, ix)) |
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62 | ix += 1 |
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63 | sizer.Add(self.tcChi, (iy, ix)) |
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64 | iy += 1 |
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65 | ix = 1 |
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66 | sizer.Add(wx.StaticText(panel, -1, 'Xmin'),(iy, ix)) |
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67 | ix += 2 |
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68 | sizer.Add(wx.StaticText(panel, -1, 'Xmax'),(iy, ix)) |
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69 | iy += 1 |
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70 | ix = 1 |
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71 | sizer.Add(self.tcXmin, (iy, ix)) |
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72 | ix += 2 |
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73 | sizer.Add(self.tcXmax, (iy, ix)) |
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74 | iy += 1 |
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75 | ix = 1 |
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76 | sizer.Add(self.btFit, (iy, ix)) |
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77 | self.btFit.Bind(wx.EVT_BUTTON, self._onFit) |
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78 | ix += 2 |
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79 | sizer.Add(btClose, (iy, ix)) |
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80 | |
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81 | panel.SetSizer(sizer) |
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82 | self.SetSizer(vbox) |
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83 | self.Centre() |
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84 | # Receives the type of model for the fitting |
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85 | from LineModel import LineModel |
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86 | self.model = LineModel() |
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87 | # new data for the fit |
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88 | self.file_data1 = Theory1D(x=[], y=[], dy=None) |
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89 | self.file_data1.name = "y= exp(A + bx**2)" |
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90 | |
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91 | def _onFit(self ,event): |
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92 | |
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93 | print "we are on fit" |
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94 | temp =[] |
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95 | tempdx =[] |
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96 | tempdy =[] |
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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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99 | x= self.plottable.x |
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100 | if x: |
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101 | if xmin !=None and xmax != None: |
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102 | for j in range(len(x)): |
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103 | if x[j]>xmin and x[j]<xmax: |
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104 | temp.append(self.model.run(x[j])) |
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105 | tempdx.append(math.sqrt(x[j])) |
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106 | for y_i in temp: |
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107 | tempdy.append(math.sqrt(y_i)) |
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108 | else: |
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109 | # x has a default value in case the user doesn't load data |
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110 | for x_i in x: |
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111 | temp.append(self.model.run(x_i)) |
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112 | tempdx.append(math.sqrt(x_i)) |
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113 | for y_i in temp: |
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114 | tempdy.append(math.sqrt(y_i)) |
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115 | self.tcXmin.SetValue(str(min(self.plottable.x))) |
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116 | self.tcXmax.SetValue(str(max(self.plottable.x))) |
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117 | xmin = self._checkVal(self.tcXmin.GetValue()) |
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118 | xmax = self._checkVal(self.tcXmax.GetValue()) |
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119 | |
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120 | self.file_data1.x =x |
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121 | self.file_data1.y =temp |
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122 | self.file_data1.dx=tempdx |
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123 | self.file_data1.dy=tempdy |
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124 | |
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125 | |
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126 | # Display the fittings values |
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127 | default_A = self.model.getParam('A') |
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128 | default_B = self.model.getParam('B') |
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129 | cstA = fittings.Parameter(self.model, 'A', default_A) |
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130 | cstB = fittings.Parameter(self.model, 'B', default_B) |
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131 | chisqr, out, cov = fittings.sansfit(self.model, |
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132 | [cstA, cstB], self.plottable.x, |
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133 | self.plottable.y, self.plottable.dy,xmin,xmax) |
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134 | # Create new data plottable with result |
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135 | |
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136 | self.file_data1.y = [] |
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137 | for x_i in self.file_data1.x: |
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138 | self.file_data1.y.append(self.model.run(x_i)) |
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139 | |
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140 | self.push_data(self.file_data1) |
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141 | |
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142 | self._onsetValues(str(out[0]),str(out[1]),\ |
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143 | str(math.sqrt(cov[0][0])),str(math.sqrt(cov[1][1])),str(chisqr)) |
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144 | |
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145 | def _onsetValues(self,cstA,cstB,errA,errB,Chi): |
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146 | |
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147 | self.tcA.SetValue(cstA) |
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148 | self.tcB.SetValue(cstB) |
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149 | self.tcErrA.SetValue(cstB) |
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150 | self.tcErrB.SetValue(cstA) |
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151 | self.tcChi.SetValue(Chi) |
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152 | |
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153 | def _returnPlottable(self): |
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154 | return self.file_data1 |
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155 | |
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156 | def _checkVal(self,value): |
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157 | """ |
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158 | Ensure that fields parameter contains a value |
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159 | before sending to fit in Plotter1D |
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160 | """ |
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161 | try: |
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162 | param = float(value) |
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163 | except: |
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164 | param = None |
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165 | return param |
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166 | if __name__ == "__main__": |
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167 | app = wx.App() |
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168 | dialog=LinearFit(None, -1, 'Fitting') |
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169 | dialog.ShowModal() |
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170 | app.MainLoop() |
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171 | |
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172 | |
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