1 | import copy |
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2 | import numpy |
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3 | import pylab |
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4 | |
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5 | from PyQt4 import QtGui |
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6 | |
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7 | DEFAULT_CMAP = pylab.cm.jet |
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8 | from mpl_toolkits.mplot3d import Axes3D |
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9 | |
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10 | import sas.qtgui.PlotUtilities as PlotUtilities |
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11 | from sas.qtgui.PlotterBase import PlotterBase |
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12 | from sas.sasgui.guiframe.dataFitting import Data2D |
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13 | |
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14 | # Minimum value of Z for which we will present data. |
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15 | MIN_Z=-32 |
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16 | |
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17 | class Plotter2DWidget(PlotterBase): |
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18 | """ |
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19 | 2D Plot widget for use with a QDialog |
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20 | """ |
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21 | def __init__(self, parent=None, manager=None, quickplot=False, dimension=2): |
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22 | self.dimension = dimension |
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23 | super(Plotter2DWidget, self).__init__(parent, manager=manager, quickplot=quickplot) |
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24 | |
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25 | @property |
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26 | def data(self): |
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27 | return self._data |
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28 | |
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29 | @data.setter |
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30 | def data(self, data=None): |
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31 | """ data setter """ |
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32 | self._data = data |
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33 | self.qx_data = data.qx_data |
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34 | self.qy_data = data.qy_data |
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35 | self.xmin = data.xmin |
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36 | self.xmax = data.xmax |
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37 | self.ymin = data.ymin |
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38 | self.ymax = data.ymax |
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39 | self.zmin = data.zmin |
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40 | self.zmax = data.zmax |
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41 | self.label = data.name |
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42 | self.xLabel = "%s(%s)"%(data._xaxis, data._xunit) |
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43 | self.yLabel = "%s(%s)"%(data._yaxis, data._yunit) |
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44 | self.title(title=data.title) |
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45 | |
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46 | def plot(self, data=None, marker=None, linestyle=None): |
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47 | """ |
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48 | Plot 2D self._data |
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49 | """ |
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50 | # Assing data |
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51 | if isinstance(data, Data2D): |
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52 | self.data = data |
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53 | |
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54 | assert(self._data) |
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55 | |
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56 | # Toggle the scale |
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57 | zmin_2D_temp = self.zmin |
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58 | zmax_2D_temp = self.zmax |
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59 | # self.scale predefined in the baseclass |
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60 | if self.scale == 'log_{10}': |
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61 | self.scale = 'linear' |
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62 | if not self.zmin is None: |
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63 | zmin_2D_temp = numpy.power(10, self.zmin) |
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64 | if not self.zmax is None: |
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65 | zmax_2D_temp = numpy.power(10, self.zmax) |
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66 | else: |
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67 | self.scale = 'log_{10}' |
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68 | if not self.zmin is None: |
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69 | # min log value: no log(negative) |
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70 | if self.zmin <= 0: |
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71 | zmin_2D_temp = MIN_Z |
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72 | else: |
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73 | zmin_2D_temp = numpy.log10(self.zmin) |
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74 | if not self.zmax is None: |
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75 | zmax_2D_temp = numpy.log10(self.zmax) |
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76 | |
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77 | # Prepare and show the plot |
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78 | self.showPlot(data=self.data.data, |
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79 | qx_data=self.qx_data, |
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80 | qy_data=self.qy_data, |
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81 | xmin=self.xmin, |
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82 | xmax=self.xmax, |
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83 | ymin=self.ymin, ymax=self.ymax, |
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84 | cmap=self.cmap, zmin=zmin_2D_temp, |
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85 | zmax=zmax_2D_temp) |
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86 | |
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87 | def contextMenu(self): |
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88 | """ |
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89 | Define common context menu and associated actions for the MPL widget |
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90 | """ |
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91 | self.defaultContextMenu() |
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92 | |
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93 | def contextMenuQuickPlot(self): |
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94 | """ |
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95 | Define context menu and associated actions for the quickplot MPL widget |
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96 | """ |
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97 | self.defaultContextMenu() |
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98 | |
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99 | if self.dimension == 2: |
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100 | self.actionToggleGrid = self.contextMenu.addAction("Toggle Grid On/Off") |
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101 | self.contextMenu.addSeparator() |
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102 | self.actionChangeScale = self.contextMenu.addAction("Toggle Linear/Log Scale") |
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103 | |
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104 | # Define the callbacks |
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105 | self.actionChangeScale.triggered.connect(self.onToggleScale) |
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106 | if self.dimension == 2: |
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107 | self.actionToggleGrid.triggered.connect(self.onGridToggle) |
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108 | |
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109 | def onToggleScale(self, event): |
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110 | """ |
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111 | Toggle axis and replot image |
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112 | """ |
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113 | self.plot() |
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114 | |
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115 | def showPlot(self, data, qx_data, qy_data, xmin, xmax, ymin, ymax, |
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116 | zmin, zmax, color=0, symbol=0, markersize=0, |
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117 | label='data2D', cmap=DEFAULT_CMAP): |
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118 | """ |
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119 | Render and show the current data |
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120 | """ |
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121 | self.qx_data = qx_data |
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122 | self.qy_data = qy_data |
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123 | self.xmin = xmin |
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124 | self.xmax = xmax |
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125 | self.ymin = ymin |
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126 | self.ymax = ymax |
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127 | self.zmin = zmin |
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128 | self.zmax = zmax |
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129 | # If we don't have any data, skip. |
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130 | if data is None: |
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131 | return |
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132 | if data.ndim == 1: |
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133 | output = PlotUtilities.build_matrix(data, self.qx_data, self.qy_data) |
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134 | else: |
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135 | output = copy.deepcopy(data) |
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136 | |
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137 | zmin_temp = self.zmin |
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138 | # check scale |
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139 | if self.scale == 'log_{10}': |
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140 | try: |
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141 | if self.zmin <= 0 and len(output[output > 0]) > 0: |
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142 | zmin_temp = self.zmin_2D |
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143 | output[output > 0] = numpy.log10(output[output > 0]) |
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144 | elif self.zmin <= 0: |
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145 | zmin_temp = self.zmin |
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146 | output[output > 0] = numpy.zeros(len(output)) |
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147 | output[output <= 0] = MIN_Z |
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148 | else: |
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149 | zmin_temp = self.zmin |
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150 | output[output > 0] = numpy.log10(output[output > 0]) |
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151 | except: |
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152 | #Too many problems in 2D plot with scale |
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153 | output[output > 0] = numpy.log10(output[output > 0]) |
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154 | pass |
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155 | |
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156 | self.cmap = cmap |
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157 | if self.dimension != 3: |
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158 | #Re-adjust colorbar |
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159 | self.figure.subplots_adjust(left=0.2, right=.8, bottom=.2) |
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160 | |
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161 | im = self.ax.imshow(output, interpolation='nearest', |
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162 | origin='lower', |
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163 | vmin=zmin_temp, vmax=self.zmax, |
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164 | cmap=self.cmap, |
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165 | extent=(self.xmin, self.xmax, |
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166 | self.ymin, self.ymax)) |
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167 | |
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168 | cbax = self.figure.add_axes([0.84, 0.2, 0.02, 0.7]) |
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169 | |
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170 | # Current labels for axes |
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171 | self.ax.set_ylabel(self.y_label) |
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172 | self.ax.set_xlabel(self.x_label) |
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173 | |
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174 | # Title only for regular charts |
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175 | if not self.quickplot: |
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176 | self.ax.set_title(label=self._title) |
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177 | |
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178 | if cbax is None: |
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179 | ax.set_frame_on(False) |
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180 | cb = self.figure.colorbar(im, shrink=0.8, aspect=20) |
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181 | else: |
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182 | cb = self.figure.colorbar(im, cax=cbax) |
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183 | |
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184 | cb.update_bruteforce(im) |
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185 | cb.set_label('$' + self.scale + '$') |
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186 | |
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187 | else: |
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188 | # clear the previous 2D from memory |
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189 | self.figure.clear() |
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190 | |
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191 | self.figure.subplots_adjust(left=0.1, right=.8, bottom=.1) |
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192 | |
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193 | X = self._data.x_bins[0:-1] |
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194 | Y = self._data.y_bins[0:-1] |
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195 | X, Y = numpy.meshgrid(X, Y) |
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196 | |
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197 | ax = Axes3D(self.figure) |
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198 | #cbax = self.figure.add_axes([0.84, 0.1, 0.02, 0.8]) |
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199 | |
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200 | # Disable rotation for large sets. |
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201 | # TODO: Define "large" for a dataset |
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202 | SET_TOO_LARGE = 500 |
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203 | if len(X) > SET_TOO_LARGE: |
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204 | ax.disable_mouse_rotation() |
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205 | |
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206 | self.figure.canvas.resizing = False |
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207 | im = ax.plot_surface(X, Y, output, rstride=1, cstride=1, cmap=cmap, |
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208 | linewidth=0, antialiased=False) |
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209 | self.ax.set_axis_off() |
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210 | |
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211 | if self.dimension != 3: |
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212 | self.figure.canvas.draw_idle() |
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213 | else: |
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214 | self.figure.canvas.draw() |
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215 | |
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216 | class Plotter2D(QtGui.QDialog, Plotter2DWidget): |
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217 | def __init__(self, parent=None, quickplot=False, dimension=2): |
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218 | |
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219 | QtGui.QDialog.__init__(self) |
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220 | Plotter2DWidget.__init__(self, manager=parent, quickplot=quickplot, dimension=dimension) |
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221 | icon = QtGui.QIcon() |
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222 | icon.addPixmap(QtGui.QPixmap(":/res/ball.ico"), QtGui.QIcon.Normal, QtGui.QIcon.Off) |
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223 | self.setWindowIcon(icon) |
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