1 | """ |
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2 | This software was developed by the University of Tennessee as part of the |
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3 | Distributed Data Analysis of Neutron Scattering Experiments (DANSE) |
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4 | project funded by the US National Science Foundation. |
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5 | |
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6 | See the license text in license.txt |
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7 | |
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8 | copyright 2008, University of Tennessee |
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9 | """ |
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10 | |
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11 | |
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12 | import wx |
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13 | import sys |
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14 | import pylab, time |
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15 | |
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16 | import danse.common.plottools |
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17 | from danse.common.plottools.PlotPanel import PlotPanel |
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18 | from danse.common.plottools.plottables import Graph,Data1D,Theory1D,Data1D |
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19 | from sans.guicomm.events import EVT_NEW_PLOT |
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20 | from sans.guicomm.events import StatusEvent ,NewPlotEvent,SlicerEvent,ErrorDataEvent |
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21 | from sans.guiframe.utils import PanelMenu |
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22 | |
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23 | from binder import BindArtist |
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24 | |
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25 | |
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26 | DEFAULT_QMAX = 0.05 |
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27 | DEFAULT_QSTEP = 0.001 |
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28 | DEFAULT_BEAM = 0.005 |
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29 | BIN_WIDTH =1 |
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30 | |
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31 | |
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32 | class ModelPanel1D(PlotPanel): |
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33 | """ |
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34 | Plot panel for use with the GUI manager |
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35 | """ |
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36 | |
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37 | ## Internal name for the AUI manager |
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38 | window_name = "plotpanel" |
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39 | ## Title to appear on top of the window |
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40 | window_caption = "Plot Panel" |
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41 | ## Flag to tell the GUI manager that this panel is not |
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42 | # tied to any perspective |
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43 | ALWAYS_ON = True |
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44 | ## Group ID |
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45 | group_id = None |
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46 | |
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47 | def __init__(self, parent, id = -1, color = None,\ |
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48 | dpi = None, style = wx.NO_FULL_REPAINT_ON_RESIZE, **kwargs): |
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49 | """ |
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50 | Initialize the panel |
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51 | """ |
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52 | PlotPanel.__init__(self, parent, id = id, style = style, **kwargs) |
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53 | |
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54 | ## Reference to the parent window |
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55 | self.parent = parent |
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56 | ## Plottables |
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57 | self.plots = {} |
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58 | ## save errors dy for each data plotted |
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59 | self.err_dy={} |
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60 | ## flag to determine if the hide or show context menu item should |
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61 | ## be displayed |
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62 | self.errors_hide=0 |
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63 | ## Unique ID (from gui_manager) |
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64 | self.uid = None |
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65 | ## Action IDs for internal call-backs |
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66 | self.action_ids = {} |
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67 | ## Graph |
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68 | self.graph = Graph() |
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69 | self.graph.xaxis("\\rm{Q}", 'A^{-1}') |
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70 | self.graph.yaxis("\\rm{Intensity} ","cm^{-1}") |
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71 | self.graph.render(self) |
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72 | |
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73 | |
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74 | def _reset(self): |
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75 | """ |
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76 | Resets internal data and graph |
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77 | """ |
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78 | self.graph.reset() |
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79 | self.plots = {} |
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80 | self.action_ids = {} |
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81 | |
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82 | |
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83 | def _onEVT_1DREPLOT(self, event): |
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84 | """ |
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85 | Data is ready to be displayed |
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86 | @param event: data event |
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87 | """ |
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88 | |
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89 | #TODO: Check for existence of plot attribute |
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90 | # Check whether this is a replot. If we ask for a replot |
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91 | # and the plottable no longer exists, ignore the event. |
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92 | if hasattr(event, "update") and event.update==True \ |
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93 | and event.plot.name not in self.plots.keys(): |
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94 | return |
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95 | |
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96 | if hasattr(event, "reset"): |
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97 | self._reset() |
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98 | |
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99 | is_new = True |
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100 | if event.plot.name in self.plots.keys(): |
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101 | # Check whether the class of plottable changed |
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102 | if not event.plot.__class__==self.plots[event.plot.name].__class__: |
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103 | #overwrite a plottable using the same name |
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104 | self.graph.delete(self.plots[event.plot.name]) |
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105 | else: |
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106 | # plottable is already draw on the panel |
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107 | is_new = False |
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108 | |
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109 | if is_new: |
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110 | # a new plottable overwrites a plotted one using the same id |
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111 | for plottable in self.plots.itervalues(): |
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112 | if hasattr(event.plot,"id"): |
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113 | if event.plot.id==plottable.id : |
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114 | self.graph.delete(plottable) |
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115 | |
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116 | self.plots[event.plot.name] = event.plot |
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117 | self.graph.add(self.plots[event.plot.name]) |
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118 | else: |
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119 | #replot the graph |
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120 | self.plots[event.plot.name].x = event.plot.x |
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121 | self.plots[event.plot.name].y = event.plot.y |
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122 | self.plots[event.plot.name].dy = event.plot.dy |
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123 | if hasattr(event.plot, 'dx') and hasattr(self.plots[event.plot.name], 'dx'): |
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124 | self.plots[event.plot.name].dx = event.plot.dx |
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125 | |
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126 | #TODO: Should re-factor this |
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127 | ## for all added plot the option to hide error show be displayed first |
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128 | self.errors_hide = 0 |
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129 | ## Set axis labels |
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130 | self.graph.xaxis(event.plot._xaxis, event.plot._xunit) |
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131 | self.graph.yaxis(event.plot._yaxis, event.plot._yunit) |
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132 | ## Set the view scale for all plots |
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133 | self._onEVT_FUNC_PROPERTY() |
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134 | ## render the graph |
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135 | self.graph.render(self) |
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136 | self.subplot.figure.canvas.draw_idle() |
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137 | |
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138 | |
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139 | def onLeftDown(self,event): |
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140 | """ |
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141 | left button down and ready to drag |
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142 | Display the position of the mouse on the statusbar |
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143 | """ |
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144 | PlotPanel.onLeftDown(self, event) |
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145 | ax = event.inaxes |
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146 | if ax != None: |
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147 | position = "x: %8.3g y: %8.3g" % (event.xdata, event.ydata) |
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148 | wx.PostEvent(self.parent, StatusEvent(status=position)) |
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149 | |
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150 | |
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151 | def _onRemove(self, event): |
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152 | """ |
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153 | Remove a plottable from the graph and render the graph |
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154 | @param event: Menu event |
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155 | """ |
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156 | ## Check if there is a selected graph to remove |
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157 | if not self.graph.selected_plottable == None: |
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158 | self.graph.delete(self.plots[self.graph.selected_plottable]) |
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159 | del self.plots[self.graph.selected_plottable] |
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160 | self.graph.render(self) |
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161 | self.subplot.figure.canvas.draw_idle() |
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162 | |
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163 | |
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164 | def onContextMenu(self, event): |
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165 | """ |
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166 | 1D plot context menu |
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167 | @param event: wx context event |
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168 | """ |
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169 | slicerpop = PanelMenu() |
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170 | slicerpop.set_plots(self.plots) |
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171 | slicerpop.set_graph(self.graph) |
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172 | |
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173 | # Various plot options |
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174 | id = wx.NewId() |
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175 | slicerpop.Append(id,'&Save image', 'Save image as PNG') |
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176 | wx.EVT_MENU(self, id, self.onSaveImage) |
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177 | |
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178 | id = wx.NewId() |
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179 | slicerpop.Append(id,'&Print image', 'Print image ') |
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180 | wx.EVT_MENU(self, id, self.onPrint) |
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181 | |
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182 | id = wx.NewId() |
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183 | slicerpop.Append(id,'&Print Preview', 'image preview for print') |
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184 | wx.EVT_MENU(self, id, self.onPrinterPreview) |
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185 | |
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186 | slicerpop.AppendSeparator() |
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187 | item_list = self.parent.get_context_menu(self.graph) |
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188 | |
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189 | if (not item_list==None) and (not len(item_list)==0): |
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190 | for item in item_list: |
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191 | try: |
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192 | id = wx.NewId() |
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193 | slicerpop.Append(id, item[0], item[1]) |
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194 | wx.EVT_MENU(self, id, item[2]) |
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195 | except: |
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196 | wx.PostEvent(self.parent, StatusEvent(status=\ |
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197 | "ModelPanel1D.onContextMenu: bad menu item %s"%sys.exc_value)) |
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198 | pass |
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199 | slicerpop.AppendSeparator() |
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200 | |
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201 | if self.graph.selected_plottable in self.plots: |
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202 | plot = self.plots[self.graph.selected_plottable] |
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203 | id = wx.NewId() |
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204 | name = plot.name |
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205 | |
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206 | slicerpop.Append(id, "&Save points" ) |
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207 | self.action_ids[str(id)] = plot |
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208 | wx.EVT_MENU(self, id, self._onSave) |
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209 | #wx.EVT_MENU(self, id, self._onSaveXML) |
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210 | |
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211 | id = wx.NewId() |
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212 | slicerpop.Append(id, "Remove %s curve" % name) |
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213 | self.action_ids[str(id)] = plot |
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214 | wx.EVT_MENU(self, id, self._onRemove) |
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215 | slicerpop.AppendSeparator() |
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216 | # Option to hide |
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217 | #TODO: implement functionality to hide a plottable (legend click) |
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218 | |
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219 | if self.graph.selected_plottable in self.plots: |
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220 | if self.plots[self.graph.selected_plottable].name in self.err_dy.iterkeys()\ |
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221 | and self.errors_hide==1: |
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222 | |
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223 | id = wx.NewId() |
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224 | slicerpop.Append(id, '&Show errors to data') |
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225 | wx.EVT_MENU(self, id, self._on_add_errors) |
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226 | |
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227 | elif self.plots[self.graph.selected_plottable].__class__.__name__=="Data1D"\ |
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228 | and self.errors_hide==0: |
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229 | |
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230 | id = wx.NewId() |
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231 | slicerpop.Append(id, '&Hide Error bars') |
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232 | wx.EVT_MENU(self, id, self._on_remove_errors) |
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233 | |
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234 | id = wx.NewId() |
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235 | slicerpop.Append(id, '&Linear fit') |
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236 | wx.EVT_MENU(self, id, self.onFitting) |
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237 | |
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238 | slicerpop.AppendSeparator() |
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239 | |
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240 | id = wx.NewId() |
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241 | slicerpop.Append(id, '&Change scale') |
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242 | wx.EVT_MENU(self, id, self._onProperties) |
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243 | |
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244 | id = wx.NewId() |
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245 | slicerpop.Append(id, '&Reset Graph') |
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246 | wx.EVT_MENU(self, id, self.onResetGraph) |
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247 | |
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248 | pos = event.GetPosition() |
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249 | pos = self.ScreenToClient(pos) |
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250 | self.PopupMenu(slicerpop, pos) |
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251 | |
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252 | |
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253 | def _on_remove_errors(self, evt): |
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254 | """ |
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255 | Save name and dy of data in dictionary self.err_dy |
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256 | Create a new data1D with the same x, y |
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257 | vector and dy with zeros. |
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258 | post self.err_dy as event (ErrorDataEvent) for any object |
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259 | which wants to reconstruct the initial data. |
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260 | @param evt: Menu event |
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261 | """ |
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262 | if not self.graph.selected_plottable == None: |
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263 | ## store existing dy |
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264 | name =self.plots[self.graph.selected_plottable].name |
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265 | dy = self.plots[self.graph.selected_plottable].dy |
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266 | self.err_dy[name]= dy |
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267 | ## Create a new dy for a new plottable |
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268 | import numpy |
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269 | dy= numpy.zeros(len(self.plots[self.graph.selected_plottable].y)) |
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270 | new_plot = Data1D(self.plots[self.graph.selected_plottable].x, |
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271 | self.plots[self.graph.selected_plottable].y, |
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272 | dy=dy) |
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273 | new_plot.interactive = True |
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274 | self.errors_hide = 1 |
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275 | new_plot.name = self.plots[self.graph.selected_plottable].name |
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276 | if hasattr(self.plots[self.graph.selected_plottable], "group_id"): |
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277 | new_plot.group_id = self.plots[self.graph.selected_plottable].group_id |
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278 | new_plot.id = self.plots[self.graph.selected_plottable].id |
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279 | else: |
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280 | new_plot.group_id = str(time.time()) |
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281 | new_plot.id = str(time.time()) |
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282 | label, unit = self.plots[self.graph.selected_plottable].get_xaxis() |
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283 | new_plot.xaxis(label, unit) |
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284 | label, unit = self.plots[self.graph.selected_plottable].get_yaxis() |
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285 | new_plot.yaxis(label, unit) |
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286 | ## save the color of the selected plottable before it is deleted |
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287 | color=self.graph.plottables[self.plots[self.graph.selected_plottable]] |
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288 | self.graph.delete(self.plots[self.graph.selected_plottable]) |
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289 | ## add newly created plottable to the graph with the save color |
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290 | self.graph.add(new_plot,color) |
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291 | ## transforming the view of the new data into the same of the previous data |
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292 | self._onEVT_FUNC_PROPERTY() |
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293 | ## save the plot |
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294 | self.plots[self.graph.selected_plottable]=new_plot |
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295 | ## Render the graph |
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296 | self.graph.render(self) |
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297 | self.subplot.figure.canvas.draw_idle() |
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298 | |
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299 | event = ErrorDataEvent(err_dy=self.err_dy) |
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300 | wx.PostEvent(self.parent, event) |
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301 | |
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302 | |
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303 | def _on_add_errors(self, evt): |
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304 | """ |
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305 | create a new data1D witht the errors saved in self.err_dy |
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306 | to show errors of the plot. |
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307 | Compute reasonable errors for a data set without |
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308 | errors and transorm the plottable to a Data1D |
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309 | @param evt: Menu event |
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310 | """ |
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311 | import math |
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312 | import numpy |
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313 | import time |
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314 | |
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315 | if not self.graph.selected_plottable == None: |
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316 | ##Reset the flag to display the hide option on the context menu |
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317 | self.errors_hide = 0 |
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318 | ## restore dy |
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319 | length = len(self.plots[self.graph.selected_plottable].x) |
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320 | dy = numpy.zeros(length) |
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321 | selected_plot= self.plots[self.graph.selected_plottable] |
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322 | try: |
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323 | dy = self.err_dy[selected_plot.name] |
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324 | except: |
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325 | for i in range(length): |
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326 | dy[i] = math.sqrt(self.plots[self.graph.selected_plottable].y[i]) |
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327 | ## Create a new plottable data1D |
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328 | new_plot = Data1D(self.plots[self.graph.selected_plottable].x, |
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329 | self.plots[self.graph.selected_plottable].y, |
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330 | dy=dy) |
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331 | new_plot.interactive = True |
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332 | |
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333 | new_plot.name = self.plots[self.graph.selected_plottable].name |
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334 | if hasattr(self.plots[self.graph.selected_plottable], "group_id"): |
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335 | new_plot.group_id = self.plots[self.graph.selected_plottable].group_id |
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336 | new_plot.id = self.plots[self.graph.selected_plottable].id |
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337 | else: |
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338 | new_plot.group_id = str(time.time()) |
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339 | new_plot.id = str(time.time()) |
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340 | |
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341 | label, unit = self.plots[self.graph.selected_plottable].get_xaxis() |
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342 | new_plot.xaxis(label, unit) |
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343 | label, unit = self.plots[self.graph.selected_plottable].get_yaxis() |
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344 | new_plot.yaxis(label, unit) |
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345 | ## save the color of the selected plottable before it is deleted |
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346 | color=self.graph.plottables[self.plots[self.graph.selected_plottable]] |
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347 | self.graph.delete(self.plots[self.graph.selected_plottable]) |
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348 | ## add newly created plottable to the graph with the save color |
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349 | self.graph.add(new_plot, color) |
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350 | ## transforming the view of the new data into the same of the previous data |
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351 | self._onEVT_FUNC_PROPERTY() |
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352 | ## save the plot |
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353 | self.plots[self.graph.selected_plottable]=new_plot |
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354 | ## render the graph with its new content |
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355 | self.graph.render(self) |
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356 | self.subplot.figure.canvas.draw_idle() |
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357 | |
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358 | |
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359 | def _onSaveXML(self, path): |
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360 | """ |
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361 | Save 1D Data to XML file |
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362 | @param evt: Menu event |
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363 | """ |
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364 | if not path == None: |
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365 | out = open(path, 'w') |
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366 | from DataLoader.readers import cansas_reader |
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367 | reader = cansas_reader.Reader() |
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368 | datainfo= self.plots[self.graph.selected_plottable].info |
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369 | reader.write( path, datainfo) |
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370 | return |
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371 | |
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372 | |
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373 | def _onsaveTXT(self, path): |
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374 | """ |
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375 | Save file as txt |
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376 | """ |
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377 | data = self.plots[self.graph.selected_plottable] |
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378 | |
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379 | if not path == None: |
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380 | out = open(path, 'w') |
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381 | has_errors = True |
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382 | if data.dy==None or data.dy==[]: |
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383 | has_errors = False |
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384 | |
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385 | # Sanity check |
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386 | if has_errors: |
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387 | try: |
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388 | if len(data.y) != len(data.dy): |
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389 | |
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390 | has_errors = False |
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391 | except: |
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392 | has_errors = False |
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393 | |
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394 | if has_errors: |
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395 | out.write("<X> <Y> <dY>\n") |
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396 | else: |
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397 | out.write("<X> <Y>\n") |
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398 | |
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399 | for i in range(len(data.x)): |
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400 | if has_errors: |
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401 | out.write("%g %g %g\n" % (data.x[i], |
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402 | data.y[i], |
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403 | data.dy[i])) |
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404 | else: |
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405 | out.write("%g %g\n" % (data.x[i], |
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406 | data.y[i])) |
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407 | |
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408 | out.close() |
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409 | |
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410 | |
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411 | def _onSave(self, evt): |
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412 | """ |
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413 | Save a data set to a text file |
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414 | @param evt: Menu event |
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415 | """ |
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416 | import os |
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417 | id = str(evt.GetId()) |
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418 | if id in self.action_ids: |
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419 | |
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420 | path = None |
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421 | wildcard = "Text files (*.txt)|*.txt|"\ |
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422 | "CanSAS 1D files(*.xml)|*.xml" |
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423 | |
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424 | dlg = wx.FileDialog(self, "Choose a file", os.getcwd(), "",wildcard , wx.SAVE) |
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425 | |
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426 | if dlg.ShowModal() == wx.ID_OK: |
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427 | path = dlg.GetPath() |
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428 | mypath = os.path.basename(path) |
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429 | if os.path.splitext(mypath)[1].lower() ==".txt": |
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430 | self._onsaveTXT(path) |
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431 | if os.path.splitext(mypath)[1].lower() ==".xml": |
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432 | self._onSaveXML(path) |
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433 | |
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434 | dlg.Destroy() |
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435 | |
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436 | |
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437 | |
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438 | |
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439 | |
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440 | |
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