1 | """ |
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2 | ASAP plotting class based on matplotlib. |
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3 | """ |
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4 | |
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5 | from asap.asaplotbase import * |
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6 | import Tkinter as Tk |
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7 | import matplotlib |
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8 | from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, \ |
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9 | FigureManagerTkAgg |
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10 | # Force use of the newfangled toolbar. |
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11 | matplotlib.rcParams['toolbar'] = 'toolbar2' |
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12 | |
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13 | class asaplotgui(asaplotbase): |
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14 | """ |
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15 | ASAP plotting class based on matplotlib. |
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16 | """ |
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17 | |
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18 | def __init__(self, rows=1, cols=0, title='', size=None, buffering=False): |
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19 | """ |
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20 | Create a new instance of the ASAPlot plotting class. |
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21 | |
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22 | If rows < 1 then a separate call to set_panels() is required to define |
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23 | the panel layout; refer to the doctext for set_panels(). |
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24 | """ |
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25 | v = vars() |
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26 | del v['self'] |
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27 | |
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28 | asaplotbase.__init__(self, **v) |
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29 | self.window = Tk.Tk() |
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30 | def dest_callback(): |
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31 | self.is_dead = True |
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32 | self.window.destroy() |
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33 | |
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34 | self.window.protocol("WM_DELETE_WINDOW", dest_callback) |
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35 | self.canvas = FigureCanvasTkAgg(self.figure, master=self.window) |
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36 | self.canvas.get_tk_widget().pack(side=Tk.TOP, fill=Tk.BOTH, expand=1) |
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37 | # Simply instantiating this is enough to get a working toolbar. |
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38 | self.figmgr = FigureManagerTkAgg(self.canvas, 1, self.window) |
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39 | self.window.wm_title('ASAP Plotter - Tk') |
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40 | |
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41 | self.events = {'button_press':None, |
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42 | 'button_release':None, |
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43 | 'motion_notify':None} |
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44 | |
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45 | matplotlib.rcParams["interactive"] = True |
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46 | #self.buffering = buffering |
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47 | |
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48 | self.canvas.show() |
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49 | |
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50 | def map(self): |
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51 | """ |
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52 | Reveal the ASAPlot graphics window and bring it to the top of the |
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53 | window stack. |
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54 | """ |
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55 | self.window.wm_deiconify() |
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56 | self.window.lift() |
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57 | |
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58 | def position(self): |
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59 | """ |
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60 | Use the mouse to get a position from a graph. |
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61 | """ |
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62 | |
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63 | def position_disable(event): |
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64 | self.register('button_press', None) |
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65 | print '%.4f, %.4f' % (event.xdata, event.ydata) |
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66 | |
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67 | print 'Press any mouse button...' |
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68 | self.register('button_press', position_disable) |
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69 | |
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70 | |
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71 | def quit(self): |
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72 | """ |
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73 | Destroy the ASAPlot graphics window. |
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74 | """ |
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75 | self.window.destroy() |
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76 | |
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77 | |
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78 | def region(self): |
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79 | """ |
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80 | Use the mouse to get a rectangular region from a plot. |
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81 | |
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82 | The return value is [x0, y0, x1, y1] in world coordinates. |
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83 | """ |
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84 | |
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85 | def region_start(event): |
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86 | height = self.canvas.figure.bbox.height() |
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87 | self.rect = {'fig': None, 'height': height, |
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88 | 'x': event.x, 'y': height - event.y, |
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89 | 'world': [event.xdata, event.ydata, |
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90 | event.xdata, event.ydata]} |
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91 | self.register('button_press', None) |
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92 | self.register('motion_notify', region_draw) |
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93 | self.register('button_release', region_disable) |
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94 | |
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95 | def region_draw(event): |
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96 | self.canvas._tkcanvas.delete(self.rect['fig']) |
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97 | self.rect['fig'] = self.canvas._tkcanvas.create_rectangle( |
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98 | self.rect['x'], self.rect['y'], |
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99 | event.x, self.rect['height'] - event.y) |
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100 | |
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101 | def region_disable(event): |
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102 | self.register('motion_notify', None) |
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103 | self.register('button_release', None) |
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104 | |
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105 | self.canvas._tkcanvas.delete(self.rect['fig']) |
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106 | |
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107 | self.rect['world'][2:4] = [event.xdata, event.ydata] |
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108 | print '(%.2f, %.2f) (%.2f, %.2f)' % (self.rect['world'][0], |
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109 | self.rect['world'][1], self.rect['world'][2], |
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110 | self.rect['world'][3]) |
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111 | |
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112 | self.register('button_press', region_start) |
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113 | |
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114 | # This has to be modified to block and return the result (currently |
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115 | # printed by region_disable) when that becomes possible in matplotlib. |
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116 | |
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117 | return [0.0, 0.0, 0.0, 0.0] |
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118 | |
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119 | |
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120 | def register(self, type=None, func=None): |
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121 | """ |
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122 | Register, reregister, or deregister events of type 'button_press', |
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123 | 'button_release', or 'motion_notify'. |
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124 | |
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125 | The specified callback function should have the following signature: |
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126 | |
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127 | def func(event) |
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128 | |
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129 | where event is an MplEvent instance containing the following data: |
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130 | |
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131 | name # Event name. |
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132 | canvas # FigureCanvas instance generating the event. |
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133 | x = None # x position - pixels from left of canvas. |
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134 | y = None # y position - pixels from bottom of canvas. |
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135 | button = None # Button pressed: None, 1, 2, 3. |
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136 | key = None # Key pressed: None, chr(range(255)), shift, |
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137 | win, or control |
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138 | inaxes = None # Axes instance if cursor within axes. |
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139 | xdata = None # x world coordinate. |
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140 | ydata = None # y world coordinate. |
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141 | |
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142 | For example: |
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143 | |
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144 | def mouse_move(event): |
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145 | print event.xdata, event.ydata |
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146 | |
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147 | a = asaplot() |
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148 | a.register('motion_notify', mouse_move) |
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149 | |
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150 | If func is None, the event is deregistered. |
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151 | |
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152 | Note that in TkAgg keyboard button presses don't generate an event. |
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153 | """ |
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154 | |
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155 | if not self.events.has_key(type): return |
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156 | |
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157 | if func is None: |
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158 | if self.events[type] is not None: |
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159 | # It's not clear that this does anything. |
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160 | self.canvas.mpl_disconnect(self.events[type]) |
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161 | self.events[type] = None |
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162 | |
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163 | # It seems to be necessary to return events to the toolbar. |
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164 | if type == 'motion_notify': |
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165 | self.canvas.mpl_connect(type + '_event', |
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166 | self.figmgr.toolbar.mouse_move) |
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167 | elif type == 'button_press': |
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168 | self.canvas.mpl_connect(type + '_event', |
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169 | self.figmgr.toolbar.press) |
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170 | elif type == 'button_release': |
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171 | self.canvas.mpl_connect(type + '_event', |
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172 | self.figmgr.toolbar.release) |
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173 | |
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174 | else: |
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175 | self.events[type] = self.canvas.mpl_connect(type + '_event', func) |
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176 | |
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177 | |
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178 | def show(self, hardrefresh=True): |
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179 | """ |
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180 | Show graphics dependent on the current buffering state. |
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181 | """ |
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182 | if not self.buffering: |
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183 | if hardrefresh: |
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184 | asaplotbase.show(self) |
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185 | self.window.wm_deiconify() |
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186 | self.canvas.show() |
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187 | |
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188 | def terminate(self): |
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189 | """ |
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190 | Clear the figure. |
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191 | """ |
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192 | self.window.destroy() |
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193 | |
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194 | def unmap(self): |
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195 | """ |
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196 | Hide the ASAPlot graphics window. |
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197 | """ |
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198 | self.window.wm_withdraw() |
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