1 | from asap import rcParams, print_log, print_log_dec |
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2 | from asap import selector, scantable |
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3 | import matplotlib.axes |
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4 | from matplotlib.font_manager import FontProperties |
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5 | from matplotlib.text import Text |
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6 | |
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7 | import re |
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8 | |
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9 | class asapplotter: |
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10 | """ |
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11 | The ASAP plotter. |
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12 | By default the plotter is set up to plot polarisations |
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13 | 'colour stacked' and scantables across panels. |
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14 | Note: |
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15 | Currenly it only plots 'spectra' not Tsys or |
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16 | other variables. |
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17 | """ |
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18 | def __init__(self, visible=None , **kwargs): |
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19 | self._visible = rcParams['plotter.gui'] |
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20 | if visible is not None: |
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21 | self._visible = visible |
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22 | self._plotter = self._newplotter(**kwargs) |
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23 | |
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24 | self._panelling = None |
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25 | self._stacking = None |
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26 | self.set_panelling() |
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27 | self.set_stacking() |
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28 | self._rows = None |
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29 | self._cols = None |
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30 | self._autoplot = False |
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31 | self._minmaxx = None |
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32 | self._minmaxy = None |
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33 | self._datamask = None |
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34 | self._data = None |
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35 | self._lmap = None |
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36 | self._title = None |
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37 | self._ordinate = None |
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38 | self._abcissa = None |
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39 | self._abcunit = None |
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40 | self._usermask = [] |
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41 | self._maskselection = None |
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42 | self._selection = selector() |
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43 | self._hist = rcParams['plotter.histogram'] |
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44 | self._fp = FontProperties() |
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45 | |
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46 | def _translate(self, instr): |
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47 | keys = "s b i p t".split() |
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48 | if isinstance(instr, str): |
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49 | for key in keys: |
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50 | if instr.lower().startswith(key): |
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51 | return key |
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52 | return None |
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53 | |
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54 | def _newplotter(self, **kwargs): |
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55 | if self._visible: |
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56 | from asap.asaplotgui import asaplotgui as asaplot |
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57 | else: |
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58 | from asap.asaplot import asaplot |
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59 | return asaplot(**kwargs) |
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60 | |
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61 | @print_log_dec |
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62 | def plot(self, scan=None): |
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63 | """ |
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64 | Plot a scantable. |
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65 | Parameters: |
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66 | scan: a scantable |
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67 | Note: |
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68 | If a scantable was specified in a previous call |
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69 | to plot, no argument has to be given to 'replot' |
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70 | NO checking is done that the abcissas of the scantable |
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71 | are consistent e.g. all 'channel' or all 'velocity' etc. |
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72 | """ |
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73 | if self._plotter.is_dead: |
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74 | self._plotter = self._newplotter() |
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75 | self._plotter.hold() |
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76 | self._plotter.clear() |
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77 | from asap import scantable |
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78 | if not self._data and not scan: |
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79 | msg = "Input is not a scantable" |
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80 | if rcParams['verbose']: |
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81 | print msg |
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82 | return |
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83 | raise TypeError(msg) |
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84 | if isinstance(scan, scantable): |
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85 | if self._data is not None: |
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86 | if scan != self._data: |
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87 | self._data = scan |
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88 | # reset |
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89 | self._reset() |
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90 | else: |
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91 | self._data = scan |
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92 | self._reset() |
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93 | # ranges become invalid when unit changes |
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94 | if self._abcunit and self._abcunit != self._data.get_unit(): |
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95 | self._minmaxx = None |
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96 | self._minmaxy = None |
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97 | self._abcunit = self._data.get_unit() |
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98 | self._datamask = None |
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99 | self._plot(self._data) |
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100 | if self._minmaxy is not None: |
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101 | self._plotter.set_limits(ylim=self._minmaxy) |
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102 | self._plotter.release() |
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103 | self._plotter.tidy() |
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104 | self._plotter.show(hardrefresh=False) |
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105 | return |
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106 | |
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107 | def gca(self): |
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108 | return self._plotter.figure.gca() |
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109 | |
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110 | def refresh(self): |
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111 | """Do a soft refresh""" |
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112 | self._plotter.figure.show() |
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113 | |
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114 | def create_mask(self, nwin=1, panel=0, color=None): |
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115 | """ |
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116 | Interactively define a mask.It retruns a mask that is equivalent to |
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117 | the one created manually with scantable.create_mask. |
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118 | Parameters: |
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119 | nwin: The number of mask windows to create interactively |
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120 | default is 1. |
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121 | panel: Which panel to use for mask selection. This is useful |
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122 | if different IFs are spread over panels (default 0) |
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123 | """ |
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124 | if self._data is None: |
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125 | return [] |
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126 | outmask = [] |
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127 | self._plotter.subplot(panel) |
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128 | xmin, xmax = self._plotter.axes.get_xlim() |
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129 | marg = 0.05*(xmax-xmin) |
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130 | self._plotter.axes.set_xlim(xmin-marg, xmax+marg) |
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131 | self.refresh() |
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132 | |
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133 | def cleanup(lines=False, texts=False, refresh=False): |
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134 | if lines: |
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135 | del self._plotter.axes.lines[-1] |
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136 | if texts: |
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137 | del self._plotter.axes.texts[-1] |
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138 | if refresh: |
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139 | self.refresh() |
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140 | |
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141 | for w in xrange(nwin): |
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142 | wpos = [] |
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143 | self.text(0.05,1.0, "Add start boundary", |
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144 | coords="relative", fontsize=10) |
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145 | point = self._plotter.get_point() |
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146 | cleanup(texts=True) |
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147 | if point is None: |
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148 | continue |
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149 | wpos.append(point[0]) |
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150 | self.axvline(wpos[0], color=color) |
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151 | self.text(0.05,1.0, "Add end boundary", coords="relative", fontsize=10) |
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152 | point = self._plotter.get_point() |
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153 | cleanup(texts=True, lines=True) |
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154 | if point is None: |
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155 | self.refresh() |
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156 | continue |
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157 | wpos.append(point[0]) |
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158 | self.axvspan(wpos[0], wpos[1], alpha=0.1, |
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159 | edgecolor=color, facecolor=color) |
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160 | ymin, ymax = self._plotter.axes.get_ylim() |
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161 | outmask.append(wpos) |
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162 | |
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163 | self._plotter.axes.set_xlim(xmin, xmax) |
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164 | self.refresh() |
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165 | if len(outmask) > 0: |
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166 | return self._data.create_mask(*outmask) |
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167 | return [] |
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168 | |
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169 | # forwards to matplotlib axes |
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170 | def text(self, *args, **kwargs): |
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171 | if kwargs.has_key("interactive"): |
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172 | if kwargs.pop("interactive"): |
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173 | pos = self._plotter.get_point() |
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174 | args = tuple(pos)+args |
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175 | self._axes_callback("text", *args, **kwargs) |
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176 | |
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177 | text.__doc__ = matplotlib.axes.Axes.text.__doc__ |
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178 | |
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179 | def arrow(self, *args, **kwargs): |
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180 | if kwargs.has_key("interactive"): |
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181 | if kwargs.pop("interactive"): |
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182 | pos = self._plotter.get_region() |
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183 | dpos = (pos[0][0], pos[0][1], |
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184 | pos[1][0]-pos[0][0], |
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185 | pos[1][1] - pos[0][1]) |
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186 | args = dpos + args |
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187 | self._axes_callback("arrow", *args, **kwargs) |
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188 | |
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189 | arrow.__doc__ = matplotlib.axes.Axes.arrow.__doc__ |
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190 | |
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191 | def annotate(self, text, xy=None, xytext=None, **kwargs): |
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192 | if kwargs.has_key("interactive"): |
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193 | if kwargs.pop("interactive"): |
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194 | xy = self._plotter.get_point() |
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195 | xytext = self._plotter.get_point() |
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196 | if not kwargs.has_key("arrowprops"): |
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197 | kwargs["arrowprops"] = dict(arrowstyle="->") |
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198 | self._axes_callback("annotate", text, xy, xytext, **kwargs) |
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199 | |
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200 | annotate.__doc__ = matplotlib.axes.Axes.annotate.__doc__ |
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201 | |
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202 | def axvline(self, *args, **kwargs): |
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203 | if kwargs.has_key("interactive"): |
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204 | if kwargs.pop("interactive"): |
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205 | pos = self._plotter.get_point() |
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206 | args = (pos[0],)+args |
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207 | self._axes_callback("axvline", *args, **kwargs) |
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208 | |
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209 | axvline.__doc__ = matplotlib.axes.Axes.axvline.__doc__ |
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210 | |
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211 | def axhline(self, *args, **kwargs): |
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212 | if kwargs.has_key("interactive"): |
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213 | if kwargs.pop("interactive"): |
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214 | pos = self._plotter.get_point() |
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215 | args = (pos[1],)+args |
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216 | self._axes_callback("axhline", *args, **kwargs) |
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217 | |
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218 | axhline.__doc__ = matplotlib.axes.Axes.axhline.__doc__ |
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219 | |
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220 | def axvspan(self, *args, **kwargs): |
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221 | if kwargs.has_key("interactive"): |
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222 | if kwargs.pop("interactive"): |
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223 | pos = self._plotter.get_region() |
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224 | dpos = (pos[0][0], pos[1][0]) |
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225 | args = dpos + args |
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226 | self._axes_callback("axvspan", *args, **kwargs) |
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227 | # hack to preventy mpl from redrawing the patch |
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228 | # it seem to convert the patch into lines on every draw. |
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229 | # This doesn't happen in a test script??? |
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230 | #del self._plotter.axes.patches[-1] |
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231 | |
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232 | axvspan.__doc__ = matplotlib.axes.Axes.axvspan.__doc__ |
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233 | |
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234 | def axhspan(self, *args, **kwargs): |
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235 | if kwargs.has_key("interactive"): |
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236 | if kwargs.pop("interactive"): |
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237 | pos = self._plotter.get_region() |
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238 | dpos = (pos[0][1], pos[1][1]) |
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239 | args = dpos + args |
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240 | |
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241 | self._axes_callback("axhspan", *args, **kwargs) |
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242 | # hack to preventy mpl from redrawing the patch |
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243 | # it seem to convert the patch into lines on every draw. |
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244 | # This doesn't happen in a test script??? |
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245 | #del self._plotter.axes.patches[-1] |
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246 | |
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247 | axhspan.__doc__ = matplotlib.axes.Axes.axhspan.__doc__ |
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248 | |
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249 | def _axes_callback(self, axesfunc, *args, **kwargs): |
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250 | panel = 0 |
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251 | if kwargs.has_key("panel"): |
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252 | panel = kwargs.pop("panel") |
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253 | coords = None |
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254 | if kwargs.has_key("coords"): |
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255 | coords = kwargs.pop("coords") |
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256 | if coords.lower() == 'world': |
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257 | kwargs["transform"] = self._plotter.axes.transData |
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258 | elif coords.lower() == 'relative': |
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259 | kwargs["transform"] = self._plotter.axes.transAxes |
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260 | self._plotter.subplot(panel) |
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261 | self._plotter.axes.set_autoscale_on(False) |
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262 | getattr(self._plotter.axes, axesfunc)(*args, **kwargs) |
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263 | self._plotter.show(False) |
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264 | self._plotter.axes.set_autoscale_on(True) |
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265 | # end matplotlib.axes fowarding functions |
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266 | |
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267 | |
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268 | def set_mode(self, stacking=None, panelling=None): |
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269 | """ |
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270 | Set the plots look and feel, i.e. what you want to see on the plot. |
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271 | Parameters: |
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272 | stacking: tell the plotter which variable to plot |
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273 | as line colour overlays (default 'pol') |
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274 | panelling: tell the plotter which variable to plot |
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275 | across multiple panels (default 'scan' |
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276 | Note: |
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277 | Valid modes are: |
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278 | 'beam' 'Beam' 'b': Beams |
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279 | 'if' 'IF' 'i': IFs |
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280 | 'pol' 'Pol' 'p': Polarisations |
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281 | 'scan' 'Scan' 's': Scans |
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282 | 'time' 'Time' 't': Times |
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283 | """ |
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284 | msg = "Invalid mode" |
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285 | if not self.set_panelling(panelling) or \ |
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286 | not self.set_stacking(stacking): |
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287 | if rcParams['verbose']: |
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288 | print msg |
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289 | return |
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290 | else: |
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291 | raise TypeError(msg) |
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292 | if self._data: self.plot(self._data) |
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293 | return |
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294 | |
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295 | def set_panelling(self, what=None): |
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296 | mode = what |
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297 | if mode is None: |
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298 | mode = rcParams['plotter.panelling'] |
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299 | md = self._translate(mode) |
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300 | if md: |
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301 | self._panelling = md |
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302 | self._title = None |
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303 | return True |
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304 | return False |
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305 | |
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306 | def set_layout(self,rows=None,cols=None): |
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307 | """ |
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308 | Set the multi-panel layout, i.e. how many rows and columns plots |
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309 | are visible. |
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310 | Parameters: |
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311 | rows: The number of rows of plots |
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312 | cols: The number of columns of plots |
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313 | Note: |
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314 | If no argument is given, the potter reverts to its auto-plot |
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315 | behaviour. |
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316 | """ |
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317 | self._rows = rows |
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318 | self._cols = cols |
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319 | if self._data: self.plot(self._data) |
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320 | return |
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321 | |
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322 | def set_stacking(self, what=None): |
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323 | mode = what |
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324 | if mode is None: |
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325 | mode = rcParams['plotter.stacking'] |
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326 | md = self._translate(mode) |
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327 | if md: |
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328 | self._stacking = md |
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329 | self._lmap = None |
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330 | return True |
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331 | return False |
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332 | |
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333 | def set_range(self,xstart=None,xend=None,ystart=None,yend=None): |
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334 | """ |
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335 | Set the range of interest on the abcissa of the plot |
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336 | Parameters: |
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337 | [x,y]start,[x,y]end: The start and end points of the 'zoom' window |
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338 | Note: |
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339 | These become non-sensical when the unit changes. |
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340 | use plotter.set_range() without parameters to reset |
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341 | |
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342 | """ |
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343 | if xstart is None and xend is None: |
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344 | self._minmaxx = None |
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345 | else: |
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346 | self._minmaxx = [xstart,xend] |
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347 | if ystart is None and yend is None: |
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348 | self._minmaxy = None |
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349 | else: |
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350 | self._minmaxy = [ystart,yend] |
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351 | if self._data: self.plot(self._data) |
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352 | return |
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353 | |
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354 | def set_legend(self, mp=None, fontsize = None, mode = 0): |
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355 | """ |
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356 | Specify a mapping for the legend instead of using the default |
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357 | indices: |
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358 | Parameters: |
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359 | mp: a list of 'strings'. This should have the same length |
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360 | as the number of elements on the legend and then maps |
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361 | to the indeces in order. It is possible to uses latex |
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362 | math expression. These have to be enclosed in r'', |
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363 | e.g. r'$x^{2}$' |
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364 | fontsize: The font size of the label (default None) |
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365 | mode: where to display the legend |
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366 | Any other value for loc else disables the legend: |
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367 | 0: auto |
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368 | 1: upper right |
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369 | 2: upper left |
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370 | 3: lower left |
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371 | 4: lower right |
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372 | 5: right |
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373 | 6: center left |
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374 | 7: center right |
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375 | 8: lower center |
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376 | 9: upper center |
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377 | 10: center |
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378 | |
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379 | Example: |
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380 | If the data has two IFs/rest frequencies with index 0 and 1 |
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381 | for CO and SiO: |
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382 | plotter.set_stacking('i') |
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383 | plotter.set_legend(['CO','SiO']) |
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384 | plotter.plot() |
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385 | plotter.set_legend([r'$^{12}CO$', r'SiO']) |
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386 | """ |
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387 | self._lmap = mp |
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388 | self._plotter.legend(mode) |
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389 | if isinstance(fontsize, int): |
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390 | from matplotlib import rc as rcp |
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391 | rcp('legend', fontsize=fontsize) |
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392 | if self._data: |
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393 | self.plot(self._data) |
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394 | return |
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395 | |
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396 | def set_title(self, title=None, fontsize=None): |
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397 | """ |
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398 | Set the title of the plot. If multiple panels are plotted, |
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399 | multiple titles have to be specified. |
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400 | Example: |
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401 | # two panels are visible on the plotter |
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402 | plotter.set_title(["First Panel","Second Panel"]) |
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403 | """ |
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404 | self._title = title |
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405 | if isinstance(fontsize, int): |
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406 | from matplotlib import rc as rcp |
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407 | rcp('axes', titlesize=fontsize) |
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408 | if self._data: self.plot(self._data) |
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409 | return |
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410 | |
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411 | def set_ordinate(self, ordinate=None, fontsize=None): |
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412 | """ |
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413 | Set the y-axis label of the plot. If multiple panels are plotted, |
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414 | multiple labels have to be specified. |
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415 | Parameters: |
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416 | ordinate: a list of ordinate labels. None (default) let |
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417 | data determine the labels |
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418 | Example: |
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419 | # two panels are visible on the plotter |
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420 | plotter.set_ordinate(["First Y-Axis","Second Y-Axis"]) |
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421 | """ |
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422 | self._ordinate = ordinate |
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423 | if isinstance(fontsize, int): |
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424 | from matplotlib import rc as rcp |
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425 | rcp('axes', labelsize=fontsize) |
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426 | rcp('ytick', labelsize=fontsize) |
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427 | if self._data: self.plot(self._data) |
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428 | return |
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429 | |
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430 | def set_abcissa(self, abcissa=None, fontsize=None): |
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431 | """ |
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432 | Set the x-axis label of the plot. If multiple panels are plotted, |
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433 | multiple labels have to be specified. |
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434 | Parameters: |
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435 | abcissa: a list of abcissa labels. None (default) let |
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436 | data determine the labels |
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437 | Example: |
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438 | # two panels are visible on the plotter |
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439 | plotter.set_ordinate(["First X-Axis","Second X-Axis"]) |
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440 | """ |
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441 | self._abcissa = abcissa |
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442 | if isinstance(fontsize, int): |
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443 | from matplotlib import rc as rcp |
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444 | rcp('axes', labelsize=fontsize) |
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445 | rcp('xtick', labelsize=fontsize) |
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446 | if self._data: self.plot(self._data) |
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447 | return |
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448 | |
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449 | def set_colors(self, colmap): |
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450 | """ |
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451 | Set the colours to be used. The plotter will cycle through |
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452 | these colours when lines are overlaid (stacking mode). |
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453 | Parameters: |
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454 | colmap: a list of colour names |
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455 | Example: |
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456 | plotter.set_colors("red green blue") |
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457 | # If for example four lines are overlaid e.g I Q U V |
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458 | # 'I' will be 'red', 'Q' will be 'green', U will be 'blue' |
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459 | # and 'V' will be 'red' again. |
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460 | """ |
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461 | if isinstance(colmap,str): |
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462 | colmap = colmap.split() |
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463 | self._plotter.palette(0, colormap=colmap) |
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464 | if self._data: self.plot(self._data) |
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465 | |
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466 | # alias for english speakers |
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467 | set_colours = set_colors |
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468 | |
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469 | def set_histogram(self, hist=True, linewidth=None): |
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470 | """ |
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471 | Enable/Disable histogram-like plotting. |
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472 | Parameters: |
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473 | hist: True (default) or False. The fisrt default |
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474 | is taken from the .asaprc setting |
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475 | plotter.histogram |
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476 | """ |
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477 | self._hist = hist |
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478 | if isinstance(linewidth, float) or isinstance(linewidth, int): |
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479 | from matplotlib import rc as rcp |
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480 | rcp('lines', linewidth=linewidth) |
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481 | if self._data: self.plot(self._data) |
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482 | |
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483 | def set_linestyles(self, linestyles=None, linewidth=None): |
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484 | """ |
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485 | Set the linestyles to be used. The plotter will cycle through |
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486 | these linestyles when lines are overlaid (stacking mode) AND |
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487 | only one color has been set. |
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488 | Parameters: |
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489 | linestyles: a list of linestyles to use. |
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490 | 'line', 'dashed', 'dotted', 'dashdot', |
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491 | 'dashdotdot' and 'dashdashdot' are |
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492 | possible |
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493 | |
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494 | Example: |
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495 | plotter.set_colors("black") |
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496 | plotter.set_linestyles("line dashed dotted dashdot") |
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497 | # If for example four lines are overlaid e.g I Q U V |
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498 | # 'I' will be 'solid', 'Q' will be 'dashed', |
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499 | # U will be 'dotted' and 'V' will be 'dashdot'. |
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500 | """ |
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501 | if isinstance(linestyles,str): |
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502 | linestyles = linestyles.split() |
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503 | self._plotter.palette(color=0,linestyle=0,linestyles=linestyles) |
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504 | if isinstance(linewidth, float) or isinstance(linewidth, int): |
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505 | from matplotlib import rc as rcp |
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506 | rcp('lines', linewidth=linewidth) |
---|
507 | if self._data: self.plot(self._data) |
---|
508 | |
---|
509 | def set_font(self, **kwargs): |
---|
510 | """ |
---|
511 | Set font properties. |
---|
512 | Parameters: |
---|
513 | family: one of 'sans-serif', 'serif', 'cursive', 'fantasy', 'monospace' |
---|
514 | style: one of 'normal' (or 'roman'), 'italic' or 'oblique' |
---|
515 | weight: one of 'normal or 'bold' |
---|
516 | size: the 'general' font size, individual elements can be adjusted |
---|
517 | seperately |
---|
518 | """ |
---|
519 | from matplotlib import rc as rcp |
---|
520 | fdict = {} |
---|
521 | for k,v in kwargs.iteritems(): |
---|
522 | if v: |
---|
523 | fdict[k] = v |
---|
524 | self._fp = FontProperties(**fdict) |
---|
525 | if self._data: |
---|
526 | self.plot() |
---|
527 | |
---|
528 | def plot_lines(self, linecat=None, doppler=0.0, deltachan=10, rotate=90.0, |
---|
529 | location=None): |
---|
530 | """ |
---|
531 | Plot a line catalog. |
---|
532 | Parameters: |
---|
533 | linecat: the linecatalog to plot |
---|
534 | doppler: the velocity shift to apply to the frequencies |
---|
535 | deltachan: the number of channels to include each side of the |
---|
536 | line to determine a local maximum/minimum |
---|
537 | rotate: the rotation (in degrees) )for the text label (default 90.0) |
---|
538 | location: the location of the line annotation from the 'top', |
---|
539 | 'bottom' or alternate (None - the default) |
---|
540 | Notes: |
---|
541 | If the spectrum is flagged no line will be drawn in that location. |
---|
542 | """ |
---|
543 | if not self._data: |
---|
544 | raise RuntimeError("No scantable has been plotted yet.") |
---|
545 | from asap._asap import linecatalog |
---|
546 | if not isinstance(linecat, linecatalog): |
---|
547 | raise ValueError("'linecat' isn't of type linecatalog.") |
---|
548 | if not self._data.get_unit().endswith("Hz"): |
---|
549 | raise RuntimeError("Can only overlay linecatalogs when data is in frequency.") |
---|
550 | from numpy import ma |
---|
551 | for j in range(len(self._plotter.subplots)): |
---|
552 | self._plotter.subplot(j) |
---|
553 | lims = self._plotter.axes.get_xlim() |
---|
554 | for row in range(linecat.nrow()): |
---|
555 | # get_frequency returns MHz |
---|
556 | base = { "GHz": 1000.0, "MHz": 1.0, "Hz": 1.0e-6 } |
---|
557 | restf = linecat.get_frequency(row)/base[self._data.get_unit()] |
---|
558 | c = 299792.458 |
---|
559 | freq = restf*(1.0-doppler/c) |
---|
560 | if lims[0] < freq < lims[1]: |
---|
561 | if location is None: |
---|
562 | loc = 'bottom' |
---|
563 | if row%2: loc='top' |
---|
564 | else: loc = location |
---|
565 | maxys = [] |
---|
566 | for line in self._plotter.axes.lines: |
---|
567 | v = line._x |
---|
568 | asc = v[0] < v[-1] |
---|
569 | |
---|
570 | idx = None |
---|
571 | if not asc: |
---|
572 | if v[len(v)-1] <= freq <= v[0]: |
---|
573 | i = len(v)-1 |
---|
574 | while i>=0 and v[i] < freq: |
---|
575 | idx = i |
---|
576 | i-=1 |
---|
577 | else: |
---|
578 | if v[0] <= freq <= v[len(v)-1]: |
---|
579 | i = 0 |
---|
580 | while i<len(v) and v[i] < freq: |
---|
581 | idx = i |
---|
582 | i+=1 |
---|
583 | if idx is not None: |
---|
584 | lower = idx - deltachan |
---|
585 | upper = idx + deltachan |
---|
586 | if lower < 0: lower = 0 |
---|
587 | if upper > len(v): upper = len(v) |
---|
588 | s = slice(lower, upper) |
---|
589 | y = line._y[s] |
---|
590 | maxy = ma.maximum(y) |
---|
591 | if isinstance( maxy, float): |
---|
592 | maxys.append(maxy) |
---|
593 | if len(maxys): |
---|
594 | peak = max(maxys) |
---|
595 | if peak > self._plotter.axes.get_ylim()[1]: |
---|
596 | loc = 'bottom' |
---|
597 | else: |
---|
598 | continue |
---|
599 | self._plotter.vline_with_label(freq, peak, |
---|
600 | linecat.get_name(row), |
---|
601 | location=loc, rotate=rotate) |
---|
602 | self._plotter.show(hardrefresh=False) |
---|
603 | |
---|
604 | |
---|
605 | def save(self, filename=None, orientation=None, dpi=None): |
---|
606 | """ |
---|
607 | Save the plot to a file. The know formats are 'png', 'ps', 'eps'. |
---|
608 | Parameters: |
---|
609 | filename: The name of the output file. This is optional |
---|
610 | and autodetects the image format from the file |
---|
611 | suffix. If non filename is specified a file |
---|
612 | called 'yyyymmdd_hhmmss.png' is created in the |
---|
613 | current directory. |
---|
614 | orientation: optional parameter for postscript only (not eps). |
---|
615 | 'landscape', 'portrait' or None (default) are valid. |
---|
616 | If None is choosen for 'ps' output, the plot is |
---|
617 | automatically oriented to fill the page. |
---|
618 | dpi: The dpi of the output non-ps plot |
---|
619 | """ |
---|
620 | self._plotter.save(filename,orientation,dpi) |
---|
621 | return |
---|
622 | |
---|
623 | |
---|
624 | def set_mask(self, mask=None, selection=None): |
---|
625 | """ |
---|
626 | Set a plotting mask for a specific polarization. |
---|
627 | This is useful for masking out "noise" Pangle outside a source. |
---|
628 | Parameters: |
---|
629 | mask: a mask from scantable.create_mask |
---|
630 | selection: the spectra to apply the mask to. |
---|
631 | Example: |
---|
632 | select = selector() |
---|
633 | select.setpolstrings("Pangle") |
---|
634 | plotter.set_mask(mymask, select) |
---|
635 | """ |
---|
636 | if not self._data: |
---|
637 | msg = "Can only set mask after a first call to plot()" |
---|
638 | if rcParams['verbose']: |
---|
639 | print msg |
---|
640 | return |
---|
641 | else: |
---|
642 | raise RuntimeError(msg) |
---|
643 | if len(mask): |
---|
644 | if isinstance(mask, list) or isinstance(mask, tuple): |
---|
645 | self._usermask = array(mask) |
---|
646 | else: |
---|
647 | self._usermask = mask |
---|
648 | if mask is None and selection is None: |
---|
649 | self._usermask = [] |
---|
650 | self._maskselection = None |
---|
651 | if isinstance(selection, selector): |
---|
652 | self._maskselection = {'b': selection.get_beams(), |
---|
653 | 's': selection.get_scans(), |
---|
654 | 'i': selection.get_ifs(), |
---|
655 | 'p': selection.get_pols(), |
---|
656 | 't': [] } |
---|
657 | else: |
---|
658 | self._maskselection = None |
---|
659 | self.plot(self._data) |
---|
660 | |
---|
661 | def _slice_indeces(self, data): |
---|
662 | mn = self._minmaxx[0] |
---|
663 | mx = self._minmaxx[1] |
---|
664 | asc = data[0] < data[-1] |
---|
665 | start=0 |
---|
666 | end = len(data)-1 |
---|
667 | inc = 1 |
---|
668 | if not asc: |
---|
669 | start = len(data)-1 |
---|
670 | end = 0 |
---|
671 | inc = -1 |
---|
672 | # find min index |
---|
673 | while start > 0 and data[start] < mn: |
---|
674 | start+= inc |
---|
675 | # find max index |
---|
676 | while end > 0 and data[end] > mx: |
---|
677 | end-=inc |
---|
678 | if end > 0: end +=1 |
---|
679 | if start > end: |
---|
680 | return end,start |
---|
681 | return start,end |
---|
682 | |
---|
683 | def _reset(self): |
---|
684 | self._usermask = [] |
---|
685 | self._usermaskspectra = None |
---|
686 | self.set_selection(None, False) |
---|
687 | |
---|
688 | def _plot(self, scan): |
---|
689 | savesel = scan.get_selection() |
---|
690 | sel = savesel + self._selection |
---|
691 | d0 = {'s': 'SCANNO', 'b': 'BEAMNO', 'i':'IFNO', |
---|
692 | 'p': 'POLNO', 'c': 'CYCLENO', 't' : 'TIME' } |
---|
693 | order = [d0[self._panelling],d0[self._stacking]] |
---|
694 | sel.set_order(order) |
---|
695 | scan.set_selection(sel) |
---|
696 | d = {'b': scan.getbeam, 's': scan.getscan, |
---|
697 | 'i': scan.getif, 'p': scan.getpol, 't': scan._gettime } |
---|
698 | |
---|
699 | polmodes = dict(zip(self._selection.get_pols(), |
---|
700 | self._selection.get_poltypes())) |
---|
701 | # this returns either a tuple of numbers or a length (ncycles) |
---|
702 | # convert this into lengths |
---|
703 | n0,nstack0 = self._get_selected_n(scan) |
---|
704 | if isinstance(n0, int): n = n0 |
---|
705 | else: n = len(n0) |
---|
706 | if isinstance(nstack0, int): nstack = nstack0 |
---|
707 | else: nstack = len(nstack0) |
---|
708 | maxpanel, maxstack = 16,16 |
---|
709 | if n > maxpanel or nstack > maxstack: |
---|
710 | from asap import asaplog |
---|
711 | maxn = 0 |
---|
712 | if nstack > maxstack: maxn = maxstack |
---|
713 | if n > maxpanel: maxn = maxpanel |
---|
714 | msg ="Scan to be plotted contains more than %d selections.\n" \ |
---|
715 | "Selecting first %d selections..." % (maxn, maxn) |
---|
716 | asaplog.push(msg) |
---|
717 | print_log() |
---|
718 | n = min(n,maxpanel) |
---|
719 | nstack = min(nstack,maxstack) |
---|
720 | if n > 1: |
---|
721 | ganged = rcParams['plotter.ganged'] |
---|
722 | if self._rows and self._cols: |
---|
723 | n = min(n,self._rows*self._cols) |
---|
724 | self._plotter.set_panels(rows=self._rows,cols=self._cols, |
---|
725 | nplots=n,ganged=ganged) |
---|
726 | else: |
---|
727 | self._plotter.set_panels(rows=n,cols=0,nplots=n,ganged=ganged) |
---|
728 | else: |
---|
729 | self._plotter.set_panels() |
---|
730 | r=0 |
---|
731 | nr = scan.nrow() |
---|
732 | a0,b0 = -1,-1 |
---|
733 | allxlim = [] |
---|
734 | allylim = [] |
---|
735 | newpanel=True |
---|
736 | panelcount,stackcount = 0,0 |
---|
737 | while r < nr: |
---|
738 | a = d[self._panelling](r) |
---|
739 | b = d[self._stacking](r) |
---|
740 | if a > a0 and panelcount < n: |
---|
741 | if n > 1: |
---|
742 | self._plotter.subplot(panelcount) |
---|
743 | self._plotter.palette(0) |
---|
744 | #title |
---|
745 | xlab = self._abcissa and self._abcissa[panelcount] \ |
---|
746 | or scan._getabcissalabel() |
---|
747 | ylab = self._ordinate and self._ordinate[panelcount] \ |
---|
748 | or scan._get_ordinate_label() |
---|
749 | self._plotter.set_axes('xlabel', xlab) |
---|
750 | self._plotter.set_axes('ylabel', ylab) |
---|
751 | lbl = self._get_label(scan, r, self._panelling, self._title) |
---|
752 | if isinstance(lbl, list) or isinstance(lbl, tuple): |
---|
753 | if 0 <= panelcount < len(lbl): |
---|
754 | lbl = lbl[panelcount] |
---|
755 | else: |
---|
756 | # get default label |
---|
757 | lbl = self._get_label(scan, r, self._panelling, None) |
---|
758 | self._plotter.set_axes('title',lbl) |
---|
759 | newpanel = True |
---|
760 | stackcount =0 |
---|
761 | panelcount += 1 |
---|
762 | if (b > b0 or newpanel) and stackcount < nstack: |
---|
763 | y = [] |
---|
764 | if len(polmodes): |
---|
765 | y = scan._getspectrum(r, polmodes[scan.getpol(r)]) |
---|
766 | else: |
---|
767 | y = scan._getspectrum(r) |
---|
768 | m = scan._getmask(r) |
---|
769 | from numpy import logical_not, logical_and |
---|
770 | if self._maskselection and len(self._usermask) == len(m): |
---|
771 | if d[self._stacking](r) in self._maskselection[self._stacking]: |
---|
772 | m = logical_and(m, self._usermask) |
---|
773 | x = scan._getabcissa(r) |
---|
774 | from numpy import ma, array |
---|
775 | y = ma.masked_array(y,mask=logical_not(array(m,copy=False))) |
---|
776 | if self._minmaxx is not None: |
---|
777 | s,e = self._slice_indeces(x) |
---|
778 | x = x[s:e] |
---|
779 | y = y[s:e] |
---|
780 | if len(x) > 1024 and rcParams['plotter.decimate']: |
---|
781 | fac = len(x)/1024 |
---|
782 | x = x[::fac] |
---|
783 | y = y[::fac] |
---|
784 | llbl = self._get_label(scan, r, self._stacking, self._lmap) |
---|
785 | if isinstance(llbl, list) or isinstance(llbl, tuple): |
---|
786 | if 0 <= stackcount < len(llbl): |
---|
787 | # use user label |
---|
788 | llbl = llbl[stackcount] |
---|
789 | else: |
---|
790 | # get default label |
---|
791 | llbl = self._get_label(scan, r, self._stacking, None) |
---|
792 | self._plotter.set_line(label=llbl) |
---|
793 | plotit = self._plotter.plot |
---|
794 | if self._hist: plotit = self._plotter.hist |
---|
795 | if len(x) > 0: |
---|
796 | plotit(x,y) |
---|
797 | xlim= self._minmaxx or [min(x),max(x)] |
---|
798 | allxlim += xlim |
---|
799 | ylim= self._minmaxy or [ma.minimum(y),ma.maximum(y)] |
---|
800 | allylim += ylim |
---|
801 | stackcount += 1 |
---|
802 | # last in colour stack -> autoscale x |
---|
803 | if stackcount == nstack: |
---|
804 | allxlim.sort() |
---|
805 | self._plotter.axes.set_xlim([allxlim[0],allxlim[-1]]) |
---|
806 | # clear |
---|
807 | allxlim =[] |
---|
808 | |
---|
809 | newpanel = False |
---|
810 | a0=a |
---|
811 | b0=b |
---|
812 | # ignore following rows |
---|
813 | if (panelcount == n) and (stackcount == nstack): |
---|
814 | # last panel -> autoscale y if ganged |
---|
815 | if rcParams['plotter.ganged']: |
---|
816 | allylim.sort() |
---|
817 | self._plotter.set_limits(ylim=[allylim[0],allylim[-1]]) |
---|
818 | break |
---|
819 | r+=1 # next row |
---|
820 | #reset the selector to the scantable's original |
---|
821 | scan.set_selection(savesel) |
---|
822 | if self._fp is not None: |
---|
823 | for o in self._plotter.figure.findobj(Text): |
---|
824 | o.set_fontproperties(self._fp) |
---|
825 | |
---|
826 | |
---|
827 | def set_selection(self, selection=None, refresh=True, **kw): |
---|
828 | if selection is None: |
---|
829 | # reset |
---|
830 | if len(kw) == 0: |
---|
831 | self._selection = selector() |
---|
832 | else: |
---|
833 | # try keywords |
---|
834 | for k in kw: |
---|
835 | if k not in selector.fields: |
---|
836 | raise KeyError("Invalid selection key '%s', valid keys are %s" % (k, selector.fields)) |
---|
837 | self._selection = selector(**kw) |
---|
838 | elif isinstance(selection, selector): |
---|
839 | self._selection = selection |
---|
840 | else: |
---|
841 | raise TypeError("'selection' is not of type selector") |
---|
842 | |
---|
843 | d0 = {'s': 'SCANNO', 'b': 'BEAMNO', 'i':'IFNO', |
---|
844 | 'p': 'POLNO', 'c': 'CYCLENO', 't' : 'TIME' } |
---|
845 | order = [d0[self._panelling],d0[self._stacking]] |
---|
846 | self._selection.set_order(order) |
---|
847 | if self._data and refresh: self.plot(self._data) |
---|
848 | |
---|
849 | def _get_selected_n(self, scan): |
---|
850 | d1 = {'b': scan.getbeamnos, 's': scan.getscannos, |
---|
851 | 'i': scan.getifnos, 'p': scan.getpolnos, 't': scan.ncycle } |
---|
852 | d2 = { 'b': self._selection.get_beams(), |
---|
853 | 's': self._selection.get_scans(), |
---|
854 | 'i': self._selection.get_ifs(), |
---|
855 | 'p': self._selection.get_pols(), |
---|
856 | 't': self._selection.get_cycles() } |
---|
857 | n = d2[self._panelling] or d1[self._panelling]() |
---|
858 | nstack = d2[self._stacking] or d1[self._stacking]() |
---|
859 | return n,nstack |
---|
860 | |
---|
861 | def _get_label(self, scan, row, mode, userlabel=None): |
---|
862 | if isinstance(userlabel, list) and len(userlabel) == 0: |
---|
863 | userlabel = " " |
---|
864 | pms = dict(zip(self._selection.get_pols(),self._selection.get_poltypes())) |
---|
865 | if len(pms): |
---|
866 | poleval = scan._getpollabel(scan.getpol(row),pms[scan.getpol(row)]) |
---|
867 | else: |
---|
868 | poleval = scan._getpollabel(scan.getpol(row),scan.poltype()) |
---|
869 | d = {'b': "Beam "+str(scan.getbeam(row)), |
---|
870 | 's': scan._getsourcename(row), |
---|
871 | 'i': "IF"+str(scan.getif(row)), |
---|
872 | 'p': poleval, |
---|
873 | 't': str(scan.get_time(row)) } |
---|
874 | return userlabel or d[mode] |
---|
875 | |
---|
876 | def plotazel(self): |
---|
877 | """ |
---|
878 | plot azimuth and elevation versus time of a scantable |
---|
879 | """ |
---|
880 | from matplotlib import pylab as PL |
---|
881 | from matplotlib.dates import DateFormatter, timezone |
---|
882 | from matplotlib.dates import HourLocator, MinuteLocator,SecondLocator, DayLocator |
---|
883 | from matplotlib.ticker import MultipleLocator |
---|
884 | from numpy import array, pi |
---|
885 | dates = self._data.get_time(asdatetime=True) |
---|
886 | t = PL.date2num(dates) |
---|
887 | tz = timezone('UTC') |
---|
888 | PL.cla() |
---|
889 | PL.ioff() |
---|
890 | PL.clf() |
---|
891 | tdel = max(t) - min(t) |
---|
892 | ax = PL.subplot(2,1,1) |
---|
893 | el = array(self._data.get_elevation())*180./pi |
---|
894 | PL.ylabel('El [deg.]') |
---|
895 | dstr = dates[0].strftime('%Y/%m/%d') |
---|
896 | if tdel > 1.0: |
---|
897 | dstr2 = dates[len(dates)-1].strftime('%Y/%m/%d') |
---|
898 | dstr = dstr + " - " + dstr2 |
---|
899 | majloc = DayLocator() |
---|
900 | minloc = HourLocator(range(0,23,12)) |
---|
901 | timefmt = DateFormatter("%b%d") |
---|
902 | elif tdel > 24./60.: |
---|
903 | timefmt = DateFormatter('%H:%M') |
---|
904 | majloc = HourLocator() |
---|
905 | minloc = MinuteLocator(30) |
---|
906 | else: |
---|
907 | timefmt = DateFormatter('%H:%M') |
---|
908 | majloc = MinuteLocator(interval=5) |
---|
909 | minloc = SecondLocator(30) |
---|
910 | |
---|
911 | PL.title(dstr) |
---|
912 | PL.plot_date(t,el,'b,', tz=tz) |
---|
913 | ax.yaxis.grid(True) |
---|
914 | |
---|
915 | if tdel > 1.0: |
---|
916 | labels = ax.get_xticklabels() |
---|
917 | # PL.setp(labels, fontsize=10, rotation=45) |
---|
918 | PL.setp(labels, fontsize=10) |
---|
919 | # Az plot |
---|
920 | az = array(self._data.get_azimuth())*180./pi |
---|
921 | if min(az) < 0: |
---|
922 | for irow in range(len(az)): |
---|
923 | if az[irow] < 0: az[irow] += 360.0 |
---|
924 | |
---|
925 | ax2 = ax.figure.add_subplot(2,1,2, sharex=ax) |
---|
926 | ax2.set_xlabel('Time (UT)') |
---|
927 | ax2.set_ylabel('Az [deg.]') |
---|
928 | ax2.plot_date(t,az,'b,', tz=tz) |
---|
929 | ax2.yaxis.grid(True) |
---|
930 | # set this last as x axis is shared |
---|
931 | ax.xaxis.set_major_formatter(timefmt) |
---|
932 | ax.xaxis.set_major_locator(majloc) |
---|
933 | ax.xaxis.set_minor_locator(minloc) |
---|
934 | PL.ion() |
---|
935 | PL.draw() |
---|
936 | |
---|
937 | def plotpointing(self): |
---|
938 | """ |
---|
939 | plot telescope pointings |
---|
940 | """ |
---|
941 | from matplotlib import pylab as PL |
---|
942 | from numpy import array |
---|
943 | dir = array(self._data.get_directionval()).transpose() |
---|
944 | ra = dir[0]*180./pi |
---|
945 | dec = dir[1]*180./pi |
---|
946 | PL.cla() |
---|
947 | PL.ioff() |
---|
948 | PL.clf() |
---|
949 | ax = PL.axes([0.1,0.1,0.8,0.8]) |
---|
950 | ax = PL.axes([0.1,0.1,0.8,0.8]) |
---|
951 | ax.set_aspect('equal') |
---|
952 | PL.plot(ra, dec, 'b,') |
---|
953 | PL.xlabel('RA [deg.]') |
---|
954 | PL.ylabel('Declination [deg.]') |
---|
955 | PL.title('Telescope pointings') |
---|
956 | [xmin,xmax,ymin,ymax] = PL.axis() |
---|
957 | PL.axis([xmax,xmin,ymin,ymax]) |
---|
958 | PL.ion() |
---|
959 | PL.draw() |
---|