1 | """
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2 | ASAP plotting class based on matplotlib.
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3 | """
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4 |
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5 | import sys
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6 | from re import match
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7 | import Tkinter as Tk
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8 |
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9 | #print "Importing matplotlib with TkAgg backend."
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10 | import matplotlib
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11 | matplotlib.use("TkAgg")
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12 |
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13 | from matplotlib.backends import new_figure_manager, show
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14 | from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, \
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15 | FigureManagerTkAgg
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16 | from matplotlib.figure import Figure, Text
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17 | from matplotlib.numerix import sqrt
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18 | from matplotlib import rc,rcParams
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19 |
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20 | # Force use of the newfangled toolbar.
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21 | matplotlib.rcParams['toolbar'] = 'toolbar2'
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22 |
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23 | # Colour dictionary.
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24 | colours = {}
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25 |
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26 | class ASAPlot:
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27 | """
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28 | ASAP plotting class based on matplotlib.
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29 | """
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30 |
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31 | def __init__(self, rows=1, cols=0, title='', size=(7,5), buffering=False):
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32 | """
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33 | Create a new instance of the ASAPlot plotting class.
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34 |
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35 | If rows < 1 then a separate call to set_panels() is required to define
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36 | the panel layout; refer to the doctext for set_panels().
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37 | """
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38 | self.window = Tk.Tk()
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39 | self.is_dead = False
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40 | def dest_callback():
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41 | self.is_dead = True
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42 | self.window.destroy()
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43 |
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44 | self.window.protocol("WM_DELETE_WINDOW", dest_callback)
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45 | #self.frame1 = Tk.Frame(self.window, relief=Tk.RIDGE, borderwidth=4)
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46 | #self.frame1.pack(fill=Tk.BOTH)
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47 |
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48 | self.figure = Figure(figsize=size,facecolor='#ddddee')
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49 | self.canvas = FigureCanvasTkAgg(self.figure, master=self.window)
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50 | self.canvas.get_tk_widget().pack(side=Tk.TOP, fill=Tk.BOTH, expand=1)
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51 |
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52 | # Simply instantiating this is enough to get a working toolbar.
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53 | self.figmgr = FigureManagerTkAgg(self.canvas, 1, self.window)
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54 | self.window.wm_title('ASAPlot graphics window')
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55 |
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56 | self.events = {'button_press':None,
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57 | 'button_release':None,
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58 | 'motion_notify':None}
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59 |
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60 | self.set_title(title)
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61 | self.subplots = []
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62 | if rows > 0:
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63 | self.set_panels(rows, cols)
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64 |
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65 |
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66 | # Set matplotlib default colour sequence.
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67 | self.colours = [1, 'b', 'g', 'r', 'c', 'm', 'y', 'k']
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68 | self.attributes = {}
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69 | self.loc = 1
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70 |
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71 | matplotlib.interactive = True
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72 | self.buffering = buffering
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73 |
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74 | self.canvas.show()
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75 |
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76 |
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77 | def clear(self):
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78 | """
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79 | Delete all lines from the plot. Line numbering will restart from 1.
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80 | """
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81 |
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82 | for i in range(1,len(self.lines)+1):
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83 | self.delete(i)
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84 |
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85 | self.axes.clear()
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86 | self.colours[0] = 1
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87 | self.lines = []
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88 |
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89 |
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90 | def delete(self, numbers=None):
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91 | """
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92 | Delete the 0-relative line number, default is to delete the last.
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93 | The remaining lines are NOT renumbered.
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94 | """
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95 |
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96 | if numbers is None: numbers = [len(self.lines)-1]
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97 |
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98 | if not hasattr(numbers, '__iter__'):
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99 | numbers = [numbers]
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100 |
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101 | for number in numbers:
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102 | if 0 <= number < len(self.lines):
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103 | if self.lines[number] is not None:
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104 | for line in self.lines[number]:
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105 | line.set_linestyle('None')
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106 | self.lines[number] = None
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107 |
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108 | self.show()
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109 |
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110 |
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111 | def get_line(self):
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112 | """
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113 | Get the current default line attributes.
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114 | """
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115 | return self.attributes
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116 |
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117 |
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118 | def hist(self, x=None, y=None, fmt=None):
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119 | """
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120 | Plot a histogram. N.B. the x values refer to the start of the
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121 | histogram bin.
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122 |
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123 | fmt is the line style as in plot().
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124 | """
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125 |
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126 | if x is None:
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127 | if y is None: return
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128 | x = range(0,len(y))
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129 |
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130 | if len(x) != len(y):
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131 | return
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132 |
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133 | l2 = 2*len(x)
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134 | x2 = range(0,l2)
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135 | y2 = range(0,l2)
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136 |
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137 | for i in range(0,l2):
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138 | x2[i] = x[i/2]
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139 |
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140 | y2[0] = 0
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141 | for i in range(1,l2):
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142 | y2[i] = y[(i-1)/2]
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143 |
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144 | self.plot(x2, y2, fmt)
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145 |
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146 |
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147 | def hold(self, hold=True):
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148 | """
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149 | Buffer graphics until subsequently released.
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150 | """
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151 | self.buffering = hold
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152 |
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153 |
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154 | def legend(self, loc=1):
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155 | """
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156 | Add a legend to the plot.
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157 |
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158 | Any other value for loc else disables the legend:
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159 | 1: upper right
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160 | 2: upper left
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161 | 3: lower left
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162 | 4: lower right
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163 | 5: right
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164 | 6: center left
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165 | 7: center right
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166 | 8: lower center
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167 | 9: upper center
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168 | 10: center
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169 |
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170 | """
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171 | if 1 > loc > 10: loc = 0
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172 | self.loc = loc
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173 | self.show()
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174 |
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175 |
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176 | def map(self):
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177 | """
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178 | Reveal the ASAPlot graphics window and bring it to the top of the
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179 | window stack.
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180 | """
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181 | self.window.wm_deiconify()
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182 | self.window.lift()
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183 |
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184 |
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185 | def palette(self, pen=None, colours=None):
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186 | """
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187 | Redefine the colour sequence.
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188 |
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189 | pen is the pen number to use for the next plot; this will be auto-
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190 | incremented.
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191 |
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192 | colours is the list of pen colours. Colour may be specified via
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193 | the single letter values understood by matplotlib:
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194 |
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195 | b: blue
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196 | g: green
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197 | r: red
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198 | c: cyan
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199 | m: magenta
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200 | y: yellow
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201 | k: black
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202 | w: white
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203 |
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204 | or via the full name as listed in the colour dictionary which is
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205 | loaded by default by load_colours() from rgb.txt and listed by
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206 | list_colours().
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207 | """
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208 |
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209 | if pen is None and colours is None:
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210 | self.colours = []
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211 | return
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212 |
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213 | if pen is None:
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214 | if not len(self.colours):
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215 | self.colours = [1]
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216 | else:
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217 | self.colours[0] = pen
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218 |
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219 | if colours is None:
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220 | return
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221 |
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222 | cols = []
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223 | for col in colours:
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224 | cols.append(get_colour(col))
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225 |
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226 | self.colours[1:] = cols
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227 |
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228 | if 0 > self.colours[0] > len(self.colours):
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229 | self.colours[0] = 1
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230 |
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231 |
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232 | def plot(self, x=None, y=None, mask=None, fmt=None, add=None):
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233 | """
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234 | Plot the next line in the current frame using the current line
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235 | attributes. The ASAPlot graphics window will be mapped and raised.
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236 |
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237 | The argument list works a bit like the matlab plot() function.
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238 | """
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239 |
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240 | if x is None:
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241 | if y is None: return
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242 | x = range(len(y))
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243 |
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244 | elif y is None:
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245 | y = x
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246 | x = range(len(y))
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247 |
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248 | if mask is None:
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249 | if fmt is None:
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250 | line = self.axes.plot(x, y)
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251 | else:
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252 | line = self.axes.plot(x, y, fmt)
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253 | else:
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254 | segments = []
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255 |
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256 | mask = list(mask)
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257 | i = 0
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258 | while mask[i:].count(1):
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259 | i += mask[i:].index(1)
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260 | if mask[i:].count(0):
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261 | j = i + mask[i:].index(0)
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262 | else:
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263 | j = len(mask)
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264 |
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265 | segments.append(x[i:j])
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266 | segments.append(y[i:j])
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267 |
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268 | i = j
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269 |
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270 | line = self.axes.plot(*segments)
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271 |
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272 | # Add to an existing line?
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273 | if add is None or len(self.lines) < add < 0:
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274 | # Don't add.
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275 | self.lines.append(line)
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276 | i = len(self.lines) - 1
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277 | else:
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278 | if add == 0: add = len(self.lines)
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279 | i = add - 1
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280 | self.lines[i].extend(line)
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281 |
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282 | # Set/reset attributes for the line.
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283 | gotcolour = False
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284 | for k, v in self.attributes.iteritems():
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285 | if k == 'color': gotcolour = True
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286 | for segment in self.lines[i]:
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287 | getattr(segment, "set_%s"%k)(v)
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288 |
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289 | if not gotcolour and len(self.colours):
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290 | for segment in self.lines[i]:
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291 | getattr(segment, "set_color")(self.colours[self.colours[0]])
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292 |
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293 | self.colours[0] += 1
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294 | if self.colours[0] >= len(self.colours):
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295 | self.colours[0] = 1
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296 |
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297 | self.show()
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298 |
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299 |
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300 | def quit(self):
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301 | """
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302 | Destroy the ASAPlot graphics window.
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303 | """
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304 | self.window.destroy()
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305 |
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306 |
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307 | def register(self, type=None, func=None):
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308 | """
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309 | Register, reregister, or deregister events of type 'button_press',
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310 | 'button_release', or 'motion_notify'.
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311 |
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312 | The specified callback function should have the following signature:
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313 |
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314 | def func(event)
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315 |
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316 | where event is an MplEvent instance containing the following data:
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317 |
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318 | name # Event name.
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319 | canvas # FigureCanvas instance generating the event.
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320 | x = None # x position - pixels from left of canvas.
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321 | y = None # y position - pixels from bottom of canvas.
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322 | button = None # Button pressed: None, 1, 2, 3.
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323 | key = None # Key pressed: None, chr(range(255)), shift,
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324 | win, or control
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325 | inaxes = None # Axes instance if cursor within axes.
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326 | xdata = None # x world coordinate.
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327 | ydata = None # y world coordinate.
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328 |
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329 | For example:
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330 |
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331 | def mouse_move(event):
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332 | print event.xdata, event.ydata
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333 |
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334 | a = asaplot()
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335 | a.register('motion_notify', mouse_move)
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336 |
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337 | If func is None, the event is deregistered.
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338 |
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339 | Note that in TkAgg keyboard button presses don't generate an event.
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340 | """
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341 |
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342 | if not self.events.has_key(type): return
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343 |
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344 | if func is None:
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345 | if self.events[type] is not None:
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346 | # It's not clear that this does anything.
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347 | self.canvas.mpl_disconnect(self.events[type])
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348 | self.events[type] = None
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349 |
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350 | # It seems to be necessary to return events to the toolbar.
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351 | if type == 'motion_notify':
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352 | self.canvas.mpl_connect(type + '_event',
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353 | self.figmgr.toolbar.mouse_move)
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354 | elif type == 'button_press':
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355 | self.canvas.mpl_connect(type + '_event',
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356 | self.figmgr.toolbar.press)
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357 | elif type == 'button_release':
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358 | self.canvas.mpl_connect(type + '_event',
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359 | self.figmgr.toolbar.release)
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360 |
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361 | else:
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362 | self.events[type] = self.canvas.mpl_connect(type + '_event', func)
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363 |
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364 |
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365 | def release(self):
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366 | """
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367 | Release buffered graphics.
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368 | """
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369 | self.buffering = False
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370 | self.show()
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371 |
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372 |
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373 | def set_axes(self, what=None, *args, **kwargs):
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374 | """
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375 | Set attributes for the axes by calling the relevant Axes.set_*()
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376 | method. Colour translation is done as described in the doctext
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377 | for palette().
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378 | """
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379 |
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380 | if what is None: return
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381 | if what[-6:] == 'colour': what = what[:-6] + 'color'
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382 |
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383 | newargs = {}
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384 | for k, v in kwargs.iteritems():
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385 | k = k.lower()
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386 | if k == 'colour': k = 'color'
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387 |
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388 | if k == 'color':
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389 | v = get_colour(v)
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390 |
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391 | newargs[k] = v
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392 |
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393 | getattr(self.axes, "set_%s"%what)(*args, **newargs)
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394 | self.show()
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395 |
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396 |
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397 | def set_figure(self, what=None, *args, **kwargs):
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398 | """
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399 | Set attributes for the figure by calling the relevant Figure.set_*()
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400 | method. Colour translation is done as described in the doctext
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401 | for palette().
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402 | """
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403 |
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404 | if what is None: return
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405 | if what[-6:] == 'colour': what = what[:-6] + 'color'
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406 | if what[-5:] == 'color' and len(args):
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407 | args = (get_colour(args[0]),)
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408 |
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409 | newargs = {}
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410 | for k, v in kwargs.iteritems():
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411 | k = k.lower()
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412 | if k == 'colour': k = 'color'
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413 |
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414 | if k == 'color':
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415 | v = get_colour(v)
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416 |
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417 | newargs[k] = v
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418 |
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419 | getattr(self.figure, "set_%s"%what)(*args, **newargs)
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420 | self.show()
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421 |
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422 |
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423 | def set_line(self, number=None, **kwargs):
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424 | """
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425 | Set attributes for the specified line, or else the next line(s)
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426 | to be plotted.
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427 |
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428 | number is the 0-relative number of a line that has already been
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429 | plotted. If no such line exists, attributes are recorded and used
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430 | for the next line(s) to be plotted.
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431 |
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432 | Keyword arguments specify Line2D attributes, e.g. color='r'. Do
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433 |
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434 | import matplotlib
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435 | help(matplotlib.lines)
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436 |
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437 | The set_* methods of class Line2D define the attribute names and
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438 | values. For non-US usage, "colour" is recognized as synonymous with
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439 | "color".
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440 |
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441 | Set the value to None to delete an attribute.
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442 |
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443 | Colour translation is done as described in the doctext for palette().
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444 | """
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445 |
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446 | redraw = False
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447 | for k, v in kwargs.iteritems():
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448 | k = k.lower()
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449 | if k == 'colour': k = 'color'
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450 |
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451 | if k == 'color':
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452 | v = get_colour(v)
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453 |
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454 | if 0 <= number < len(self.lines):
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455 | if self.lines[number] is not None:
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456 | for line in self.lines[number]:
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457 | getattr(line, "set_%s"%k)(v)
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458 | redraw = True
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459 | else:
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460 | if v is None:
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461 | del self.attributes[k]
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462 | else:
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463 | self.attributes[k] = v
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464 |
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465 | if redraw: self.show()
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466 |
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467 |
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468 | def set_panels(self, rows=1, cols=0, n=-1, nplots=-1):
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469 | """
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470 | Set the panel layout.
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471 |
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472 | rows and cols, if cols != 0, specify the number of rows and columns in
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473 | a regular layout. (Indexing of these panels in matplotlib is row-
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474 | major, i.e. column varies fastest.)
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475 |
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476 | cols == 0 is interpreted as a retangular layout that accomodates
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477 | 'rows' panels, e.g. rows == 6, cols == 0 is equivalent to
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478 | rows == 2, cols == 3.
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479 |
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480 | 0 <= n < rows*cols is interpreted as the 0-relative panel number in
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481 | the configuration specified by rows and cols to be added to the
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482 | current figure as its next 0-relative panel number (i). This allows
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483 | non-regular panel layouts to be constructed via multiple calls. Any
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484 | other value of n clears the plot and produces a rectangular array of
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485 | empty panels.
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486 | """
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487 | if n < 0 and len(self.subplots):
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488 | self.figure.clear()
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489 | self.set_title()
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490 |
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491 | if rows < 1:
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492 | rows = 1
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493 | nel = 1
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494 | if cols == 0:
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495 | nel = rows
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496 | i = int(sqrt(rows))
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497 | if i*i < rows: i += 1
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498 | cols = i
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499 |
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500 | if i*(i-1) >= rows: i -= 1
|
---|
501 | rows = i
|
---|
502 | else:
|
---|
503 | if nplots > -1:
|
---|
504 | nel=nplots
|
---|
505 | if 0 <= n < rows*cols:
|
---|
506 | i = len(self.subplots)
|
---|
507 | self.subplots.append({})
|
---|
508 | self.subplots[i]['axes'] = self.figure.add_subplot(rows,
|
---|
509 | cols, n+1)
|
---|
510 | self.subplots[i]['lines'] = []
|
---|
511 |
|
---|
512 | if i == 0: self.subplot(0)
|
---|
513 |
|
---|
514 | else:
|
---|
515 | self.subplots = []
|
---|
516 | for i in range(nel):
|
---|
517 | self.subplots.append({})
|
---|
518 | self.subplots[i]['axes'] = self.figure.add_subplot(rows,
|
---|
519 | cols, i+1)
|
---|
520 | self.subplots[i]['lines'] = []
|
---|
521 |
|
---|
522 | self.subplot(0)
|
---|
523 |
|
---|
524 |
|
---|
525 | def set_title(self, title=None):
|
---|
526 | """
|
---|
527 | Set the title of the plot window. Use the previous title if title is
|
---|
528 | omitted.
|
---|
529 | """
|
---|
530 | if title is not None:
|
---|
531 | self.title = title
|
---|
532 |
|
---|
533 | self.figure.text(0.5, 0.95, self.title, horizontalalignment='center')
|
---|
534 |
|
---|
535 |
|
---|
536 | def show(self):
|
---|
537 | """
|
---|
538 | Show graphics dependent on the current buffering state.
|
---|
539 | """
|
---|
540 | if not self.buffering:
|
---|
541 | if self.loc:
|
---|
542 | for j in range(len(self.subplots)):
|
---|
543 | lines = []
|
---|
544 | labels = []
|
---|
545 | i = 0
|
---|
546 | for line in self.subplots[j]['lines']:
|
---|
547 | i += 1
|
---|
548 | if line is not None:
|
---|
549 | lines.append(line[0])
|
---|
550 | lbl = line[0].get_label()
|
---|
551 | if lbl == '':
|
---|
552 | lbl = str(i)
|
---|
553 | labels.append(lbl)
|
---|
554 |
|
---|
555 | if len(lines):
|
---|
556 | self.subplots[j]['axes'].legend(tuple(lines), tuple(labels), self.loc)
|
---|
557 | else:
|
---|
558 | self.subplots[j]['axes'].legend((' '))
|
---|
559 |
|
---|
560 | self.window.wm_deiconify()
|
---|
561 | self.canvas.show()
|
---|
562 |
|
---|
563 |
|
---|
564 | def subplot(self, i=None, inc=None):
|
---|
565 | """
|
---|
566 | Set the subplot to the 0-relative panel number as defined by one or
|
---|
567 | more invokations of set_panels().
|
---|
568 | """
|
---|
569 | l = len(self.subplots)
|
---|
570 | if l:
|
---|
571 | if i is not None:
|
---|
572 | self.i = i
|
---|
573 |
|
---|
574 | if inc is not None:
|
---|
575 | self.i += inc
|
---|
576 |
|
---|
577 | self.i %= l
|
---|
578 | self.axes = self.subplots[self.i]['axes']
|
---|
579 | self.lines = self.subplots[self.i]['lines']
|
---|
580 |
|
---|
581 |
|
---|
582 | def terminate(self):
|
---|
583 | """
|
---|
584 | Clear the figure.
|
---|
585 | """
|
---|
586 | self.window.destroy()
|
---|
587 |
|
---|
588 |
|
---|
589 | def text(self, *args, **kwargs):
|
---|
590 | """
|
---|
591 | Add text to the figure.
|
---|
592 | """
|
---|
593 | self.figure.text(*args, **kwargs)
|
---|
594 | self.show()
|
---|
595 |
|
---|
596 | def unmap(self):
|
---|
597 | """
|
---|
598 | Hide the ASAPlot graphics window.
|
---|
599 | """
|
---|
600 | self.window.wm_withdraw()
|
---|
601 |
|
---|
602 | def set_limits(self,xlim=None,ylim=None):
|
---|
603 | for s in self.subplots:
|
---|
604 | self.axes = s['axes']
|
---|
605 | self.lines = s['lines']
|
---|
606 | if xlim is not None:
|
---|
607 | self.axes.set_xlim(xlim)
|
---|
608 | if ylim is not None:
|
---|
609 | self.axes.set_ylim(ylim)
|
---|
610 | return
|
---|
611 |
|
---|
612 | def save(self, fname=None):
|
---|
613 | """
|
---|
614 | Save the plot to a file. The know formats are 'png', 'ps', 'eps'.
|
---|
615 | Parameters:
|
---|
616 | filename: The name of the output file. This is optional
|
---|
617 | and autodetects the image format from the file
|
---|
618 | suffix. If non filename is specified a file
|
---|
619 | called 'yyyymmdd_hhmmss.png' is created in the
|
---|
620 | current directory.
|
---|
621 | """
|
---|
622 | if fname is None:
|
---|
623 | from datetime import datetime
|
---|
624 | dstr = datetime.now().strftime('%Y%m%d_%H%M%S')
|
---|
625 | fname = 'asap'+dstr+'.png'
|
---|
626 |
|
---|
627 | d = ['png','.ps','eps']
|
---|
628 |
|
---|
629 | from os.path import expandvars
|
---|
630 | fname = expandvars(fname)
|
---|
631 |
|
---|
632 | if fname[-3:].lower() in d:
|
---|
633 | try:
|
---|
634 | self.canvas.print_figure(fname)
|
---|
635 | print 'Written file %s' % (fname)
|
---|
636 | except IOError, msg:
|
---|
637 | print 'Failed to save %s: Error msg was\n\n%s' % (fname, err)
|
---|
638 | return
|
---|
639 | else:
|
---|
640 | print "Invalid image type. Valid types are:"
|
---|
641 | print "ps, eps, png"
|
---|
642 |
|
---|
643 |
|
---|
644 | def get_colour(colour='black'):
|
---|
645 | """
|
---|
646 | Look up a colour by name in the colour dictionary. Matches are
|
---|
647 | case-insensitive, insensitive to blanks, and 'gray' matches 'grey'.
|
---|
648 | """
|
---|
649 |
|
---|
650 | if colour is None: return None
|
---|
651 |
|
---|
652 | if match('[rgbcmykw]$', colour): return colour
|
---|
653 | if match('#[\da-fA-F]{6}$', colour): return colour
|
---|
654 |
|
---|
655 | if len(colours) == 0: load_colours()
|
---|
656 |
|
---|
657 | # Try a quick match.
|
---|
658 | if colours.has_key(colour): return colours[colour]
|
---|
659 |
|
---|
660 | colour = colour.replace(' ','').lower()
|
---|
661 | colour = colour.replace('gray','grey')
|
---|
662 | for name in colours.keys():
|
---|
663 | if name.lower() == colour:
|
---|
664 | return colours[name]
|
---|
665 |
|
---|
666 | return '#000000'
|
---|
667 |
|
---|
668 |
|
---|
669 | def list_colours():
|
---|
670 | """
|
---|
671 | List the contents of the colour dictionary sorted by name.
|
---|
672 | """
|
---|
673 |
|
---|
674 | if len(colours) == 0: load_colours()
|
---|
675 |
|
---|
676 | names = colours.keys()
|
---|
677 | names.sort()
|
---|
678 | for name in names:
|
---|
679 | print colours[name], name
|
---|
680 |
|
---|
681 |
|
---|
682 | def load_colours(filename='/usr/local/lib/rgb.txt'):
|
---|
683 | """
|
---|
684 | Load the colour dictionary from the specified file.
|
---|
685 | """
|
---|
686 | print 'Loading colour dictionary from', file
|
---|
687 | from os.path import expandvars
|
---|
688 | filename = expandvars(filename)
|
---|
689 | rgb = open(filename, 'r')
|
---|
690 |
|
---|
691 | while True:
|
---|
692 | line = rgb.readline()
|
---|
693 | if line == '': break
|
---|
694 | tmp = line.split()
|
---|
695 |
|
---|
696 | if len(tmp) == 4:
|
---|
697 | if tmp[3][:4] == 'gray': continue
|
---|
698 | if tmp[3].lower().find('gray') != -1: continue
|
---|
699 |
|
---|
700 | name = tmp[3][0].upper() + tmp[3][1:]
|
---|
701 | r, g, b = int(tmp[0]), int(tmp[1]), int(tmp[2])
|
---|
702 | colours[name] = '#%2.2x%2.2x%2.2x' % (r, g, b)
|
---|