| 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 |
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| 18 | # Force use of the newfangled toolbar.
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| 19 | matplotlib.rcParams['toolbar'] = 'toolbar2'
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| 20 |
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| 21 | # Colour dictionary.
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| 22 | colours = {}
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| 23 |
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| 24 | class ASAPlot:
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| 25 | """
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| 26 | ASAP plotting class based on matplotlib.
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| 27 | """
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| 28 |
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| 29 | def __init__(self, rowcol='11', title='', buffering=False):
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| 30 | """
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| 31 | Create a new instance of the ASAPlot plotting class.
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| 32 | """
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| 33 | self.window = Tk.Tk()
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| 34 |
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| 35 | self.frame1 = Tk.Frame(self.window, relief=Tk.RIDGE, borderwidth=4)
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| 36 | self.frame1.pack(fill=Tk.BOTH)
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| 37 |
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| 38 | self.figure = Figure(figsize=(10,8), facecolor='#ddddee')
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| 39 | self.canvas = FigureCanvasTkAgg(self.figure, master=self.frame1)
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| 40 | self.canvas.get_tk_widget().pack(side=Tk.TOP, fill=Tk.BOTH, expand=1)
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| 41 |
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| 42 | # Simply instantiating this is enough to get a working toolbar.
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| 43 | self.figmgr = FigureManagerTkAgg(self.canvas, 1, self.window)
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| 44 | self.window.wm_title('ASAPlot graphics window')
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| 45 |
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| 46 | self.frame2 = Tk.Frame(self.window, relief=Tk.RIDGE, borderwidth=4)
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| 47 | self.frame2.pack(fill=Tk.X)
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| 48 | self.label1 = Tk.Label(self.frame2, width=10)
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| 49 | self.label1.pack(side=Tk.LEFT, fill=Tk.X)
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| 50 | self.label2 = Tk.Label(self.frame2)
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| 51 | self.label2.pack(side=Tk.LEFT, fill=Tk.X, expand=1)
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| 52 |
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| 53 | self.button = Tk.Button(master=self.frame2, text='Dismiss',
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| 54 | command=self.quit)
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| 55 | self.button.pack(side=Tk.RIGHT)
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| 56 |
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| 57 | self.figure.text(0.5, 0.95, title, horizontalalignment='center')
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| 58 |
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| 59 | self.rows = int(rowcol[0])
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| 60 | self.cols = int(rowcol[1])
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| 61 | self.subplots = []
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| 62 | for i in range(0,self.rows*self.cols):
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| 63 | self.subplots.append({})
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| 64 | self.subplots[i]['axes'] = self.figure.add_subplot(self.rows,
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| 65 | self.cols, i+1)
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| 66 | self.subplots[i]['lines'] = []
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| 67 |
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| 68 | def mouse_move(event):
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| 69 | for i in range(len(self.subplots)):
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| 70 | axes = self.subplots[i]['axes']
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| 71 | height = axes.figure.bbox.height()
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| 72 | x, y = event.x, height-event.y
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| 73 |
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| 74 | if axes.in_axes(x, y):
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| 75 | # The cursor position.
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| 76 | x, y = axes.transData.inverse_xy_tup((x,y))
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| 77 | self.label2.config(text='x=%1.2f, y=%1.2f'%(x,y))
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| 78 | return
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| 79 | self.label2.config(text='')
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| 80 |
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| 81 | self.canvas.get_tk_widget().bind("<Motion>", mouse_move)
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| 82 | self.figmgr.toolbar.set_active([0])
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| 83 |
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| 84 | self.axes = self.subplots[0]['axes']
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| 85 | self.lines = self.subplots[0]['lines']
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| 86 |
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| 87 |
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| 88 | # Set matplotlib default colour sequence.
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| 89 | self.colours = [1, 'b', 'g', 'r', 'c', 'm', 'y', 'k', 'w']
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| 90 | self.attributes = {}
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| 91 | self.loc = 1
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| 92 |
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| 93 | matplotlib.interactive = True
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| 94 | self.buffering = buffering
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| 95 |
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| 96 | self.figmgr.show()
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| 97 | # self.canvas.show()
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| 98 |
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| 99 |
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| 100 | def clear(self):
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| 101 | """
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| 102 | Delete all lines from the plot. Line numbering will restart from 1.
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| 103 | """
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| 104 |
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| 105 | for i in range(1,len(self.lines)+1):
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| 106 | self.delete(i)
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| 107 |
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| 108 | self.lines = []
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| 109 |
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| 110 |
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| 111 | def delete(self, numbers=None):
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| 112 | """
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| 113 | Delete the 1-relative line number, default is to delete the last.
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| 114 | The remaining lines are NOT renumbered.
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| 115 | """
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| 116 |
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| 117 | if numbers is None: numbers = [len(self.lines)]
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| 118 |
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| 119 | if not hasattr(numbers, '__iter__'):
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| 120 | numbers = [numbers]
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| 121 |
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| 122 | for number in numbers:
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| 123 | if 0 < number <= len(self.lines):
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| 124 | if self.lines[number-1] is not None:
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| 125 | for line in self.lines[number-1]:
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| 126 | line.set_linestyle('None')
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| 127 | self.lines[number-1] = None
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| 128 |
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| 129 | self.show()
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| 130 |
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| 131 |
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| 132 | def get_line(self):
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| 133 | """
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| 134 | Get the current default line attributes.
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| 135 | """
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| 136 | return self.attributes
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| 137 |
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| 138 |
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| 139 | def hold(self, hold=True):
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| 140 | """
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| 141 | Buffer graphics until subsequently released.
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| 142 | """
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| 143 | self.buffering = hold
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| 144 | if self.buffering:
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| 145 | self.label1.config(text='On hold')
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| 146 | else:
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| 147 | self.label1.config(text='')
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| 148 |
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| 149 |
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| 150 | def legend(self, loc=1):
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| 151 | """
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| 152 | Add a legend to the plot.
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| 153 |
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| 154 | Any other value for loc else disables the legend:
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| 155 | 1: upper right
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| 156 | 2: upper left
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| 157 | 3: lower left
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| 158 | 4: lower right
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| 159 | 5: right
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| 160 | 6: center left
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| 161 | 7: center right
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| 162 | 8: lower center
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| 163 | 9: upper center
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| 164 | 10: center
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| 165 |
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| 166 | """
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| 167 | if 1 > loc > 10: loc = 0
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| 168 | self.loc = loc
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| 169 | self.show()
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| 170 |
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| 171 |
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| 172 | def map(self):
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| 173 | """
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| 174 | Reveal the ASAPlot graphics window and bring it to the top of the
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| 175 | window stack.
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| 176 | """
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| 177 | self.window.wm_deiconify()
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| 178 | self.window.lift()
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| 179 |
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| 180 |
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| 181 | def palette(self, pen=None, colours=None):
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| 182 | """
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| 183 | Redefine the colour sequence.
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| 184 |
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| 185 | pen is the pen number to use for the next plot; this will be auto-
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| 186 | incremented.
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| 187 |
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| 188 | colours is the list of pen colours. Colour may be specified via
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| 189 | the single letter values understood by matplotlib:
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| 190 |
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| 191 | b: blue
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| 192 | g: green
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| 193 | r: red
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| 194 | c: cyan
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| 195 | m: magenta
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| 196 | y: yellow
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| 197 | k: black
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| 198 | w: white
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| 199 |
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| 200 | or via the full name as listed in the colour dictionary which is
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| 201 | loaded by default by load_colours() from rgb.txt and listed by
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| 202 | list_colours().
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| 203 | """
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| 204 |
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| 205 | if pen is None and colours is None:
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| 206 | self.colours = []
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| 207 | return
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| 208 |
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| 209 | if pen is None:
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| 210 | if not len(self.colours):
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| 211 | self.colours = [1]
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| 212 | else:
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| 213 | self.colours[0] = pen
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| 214 |
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| 215 | if colours is None:
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| 216 | return
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| 217 |
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| 218 | cols = []
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| 219 | for col in colours:
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| 220 | cols.append(get_colour(col))
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| 221 |
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| 222 | self.colours[1:] = cols
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| 223 |
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| 224 | if 0 > self.colours[0] > len(self.colours):
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| 225 | self.colours[0] = 1
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| 226 |
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| 227 |
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| 228 | def plot(self, x=None, y=None, mask=None, fmt=None, add=None):
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| 229 | """
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| 230 | Plot the next line in the current frame using the current line
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| 231 | attributes. The ASAPlot graphics window will be mapped and raised.
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| 232 |
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| 233 | The argument list works a bit like the matlab plot() function.
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| 234 | """
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| 235 |
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| 236 | if x is None:
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| 237 | if y is None: return
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| 238 | x = range(len(y))
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| 239 |
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| 240 | elif y is None:
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| 241 | y = x
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| 242 | x = range(len(y))
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| 243 |
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| 244 | if mask is None:
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| 245 | if fmt is None:
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| 246 | line = self.axes.plot(x, y)
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| 247 | else:
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| 248 | line = self.axes.plot(x, y, fmt)
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| 249 | else:
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| 250 | segments = []
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| 251 |
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| 252 | mask = list(mask)
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| 253 | i = 0
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| 254 | while mask[i:].count(1):
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| 255 | i += mask[i:].index(1)
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| 256 | if mask[i:].count(0):
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| 257 | j = i + mask[i:].index(0)
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| 258 | else:
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| 259 | j = len(mask)
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| 260 |
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| 261 | segments.append(x[i:j])
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| 262 | segments.append(y[i:j])
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| 263 |
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| 264 | i = j
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| 265 |
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| 266 | line = self.axes.plot(*segments)
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| 267 |
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| 268 | # Add to an existing line?
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| 269 | if add is None or len(self.lines) < add < 0:
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| 270 | self.lines.append(line)
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| 271 | i = len(self.lines) - 1
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| 272 | else:
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| 273 | if add == 0: add = len(self.lines)
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| 274 | i = add - 1
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| 275 | self.lines[i].extend(line)
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| 276 |
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| 277 | # Set/reset attributes for the line.
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| 278 | gotcolour = False
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| 279 | for k, v in self.attributes.iteritems():
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| 280 | if k == 'color': gotcolour = True
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| 281 | for segment in self.lines[i]:
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| 282 | getattr(segment, "set_%s"%k)(v)
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| 283 |
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| 284 | if not gotcolour and len(self.colours):
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| 285 | for segment in self.lines[i]:
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| 286 | getattr(segment, "set_color")(self.colours[self.colours[0]])
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| 287 |
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| 288 | self.colours[0] += 1
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| 289 | if self.colours[0] >= len(self.colours):
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| 290 | self.colours[0] = 1
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| 291 |
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| 292 | self.show()
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| 293 |
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| 294 |
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| 295 | def quit(self):
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| 296 | """
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| 297 | Destroy the ASAPlot graphics window.
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| 298 | """
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| 299 | self.window.destroy()
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| 300 |
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| 301 |
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| 302 | def release(self):
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| 303 | """
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| 304 | Release buffered graphics.
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| 305 | """
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| 306 | self.buffering = False
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| 307 | self.show()
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| 308 |
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| 309 |
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| 310 | def set_axes(self, what=None, *args, **kwargs):
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| 311 | """
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| 312 | Set attributes for the axes by calling the relevant Axes.set_*()
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| 313 | method. Colour translation is done as described in the doctext
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| 314 | for palette().
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| 315 | """
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| 316 |
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| 317 | if what is None: return
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| 318 | if what[-6:] == 'colour': what = what[:-6] + 'color'
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| 319 |
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| 320 | newargs = {}
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| 321 | for k, v in kwargs.iteritems():
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| 322 | k = k.lower()
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| 323 | if k == 'colour': k = 'color'
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| 324 |
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| 325 | if k == 'color':
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| 326 | v = get_colour(v)
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| 327 |
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| 328 | newargs[k] = v
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| 329 |
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| 330 | getattr(self.axes, "set_%s"%what)(*args, **newargs)
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| 331 | self.show()
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| 332 |
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| 333 |
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| 334 | def set_figure(self, what=None, *args, **kwargs):
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| 335 | """
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| 336 | Set attributes for the figure by calling the relevant Figure.set_*()
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| 337 | method. Colour translation is done as described in the doctext
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| 338 | for palette().
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| 339 | """
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| 340 |
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| 341 | if what is None: return
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| 342 | if what[-6:] == 'colour': what = what[:-6] + 'color'
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| 343 | if what[-5:] == 'color' and len(args):
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| 344 | args = (get_colour(args[0]),)
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| 345 |
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| 346 | newargs = {}
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| 347 | for k, v in kwargs.iteritems():
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| 348 | k = k.lower()
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| 349 | if k == 'colour': k = 'color'
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| 350 |
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| 351 | if k == 'color':
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| 352 | v = get_colour(v)
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| 353 |
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| 354 | newargs[k] = v
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| 355 |
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| 356 | getattr(self.figure, "set_%s"%what)(*args, **newargs)
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| 357 | self.show()
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| 358 |
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| 359 |
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| 360 | def set_line(self, number=None, **kwargs):
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| 361 | """
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| 362 | Set attributes for the specified line, or else the next line(s)
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| 363 | to be plotted.
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| 364 |
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| 365 | number is the 1-relative number of a line that has already been
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| 366 | plotted. If no such line exists, attributes are recorded and used
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| 367 | for the next line(s) to be plotted.
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| 368 |
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| 369 | Keyword arguments specify Line2D attributes, e.g. color='r'. Do
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| 370 |
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| 371 | import matplotlib
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| 372 | help(matplotlib.lines)
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| 373 |
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| 374 | The set_* methods of class Line2D define the attribute names and
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| 375 | values. For non-US usage, "colour" is recognized as synonymous with
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| 376 | "color".
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| 377 |
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| 378 | Set the value to None to delete an attribute.
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| 379 |
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| 380 | Colour translation is done as described in the doctext for palette().
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| 381 | """
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| 382 |
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| 383 | redraw = False
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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 | if 0 < number <= len(self.lines):
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| 392 | if self.lines[number-1] is not None:
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| 393 | for line in self.lines[number-1]:
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| 394 | getattr(line, "set_%s"%k)(v)
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| 395 | redraw = True
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| 396 | else:
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| 397 | if v is None:
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| 398 | del self.attributes[k]
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| 399 | else:
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| 400 | self.attributes[k] = v
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| 401 |
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| 402 | if redraw: self.show()
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| 403 |
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| 404 |
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| 405 | def show(self):
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| 406 | """
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| 407 | Show graphics dependent on the current buffering state.
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| 408 | """
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| 409 | if not self.buffering:
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| 410 | if self.loc:
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| 411 | lines = []
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| 412 | labels = []
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| 413 | i = 0
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| 414 | for line in self.lines:
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| 415 | i += 1
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| 416 | if line is not None:
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| 417 | lines.append(line[0])
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| 418 | labels.append(str(i))
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| 419 |
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| 420 | if len(lines):
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| 421 | self.axes.legend(tuple(lines), tuple(labels), self.loc)
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| 422 | else:
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| 423 | self.axes.legend((' '))
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| 424 |
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| 425 | self.window.wm_deiconify()
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| 426 | self.canvas.show()
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| 427 |
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| 428 |
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| 429 | def subplot(self, col=1, row=1):
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| 430 | """
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| 431 | Set the subplot.
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| 432 | """
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| 433 | i = (self.cols*(row-1) + col-1)%(self.rows*self.cols)
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| 434 | self.axes = self.subplots[i]['axes']
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| 435 | self.lines = self.subplots[i]['lines']
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| 436 |
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| 437 |
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| 438 | def terminate(self):
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| 439 | """
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| 440 | Clear the figure.
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| 441 | """
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| 442 | self.window.destroy()
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| 443 |
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| 444 |
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| 445 | def text(self, *args, **kwargs):
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| 446 | """
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| 447 | Add text to the figure.
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| 448 | """
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| 449 | self.figure.text(*args, **kwargs)
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| 450 | self.show()
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| 451 |
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| 452 |
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| 453 | def unmap(self):
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| 454 | """
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| 455 | Hide the ASAPlot graphics window.
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| 456 | """
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| 457 | self.window.wm_withdraw()
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| 458 |
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| 459 |
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| 460 | def get_colour(colour='black'):
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| 461 | """
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| 462 | Look up a colour by name in the colour dictionary. Matches are
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| 463 | case-insensitive, insensitive to blanks, and 'gray' matches 'grey'.
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| 464 | """
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| 465 |
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| 466 | if colour is None: return None
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| 467 |
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| 468 | if match('[rgbcmykw]$', colour): return colour
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| 469 | if match('#[\da-fA-F]{6}$', colour): return colour
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| 470 |
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| 471 | if len(colours) == 0: load_colours()
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| 472 |
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| 473 | # Try a quick match.
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| 474 | if colours.has_key(colour): return colours[colour]
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| 475 |
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| 476 | colour = colour.replace(' ','').lower()
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| 477 | colour = colour.replace('gray','grey')
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| 478 | for name in colours.keys():
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| 479 | if name.lower() == colour:
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| 480 | return colours[name]
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| 481 |
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| 482 | return '#000000'
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| 483 |
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| 484 |
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| 485 | def list_colours():
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| 486 | """
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| 487 | List the contents of the colour dictionary sorted by name.
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| 488 | """
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| 489 |
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| 490 | if len(colours) == 0: load_colours()
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| 491 |
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| 492 | names = colours.keys()
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| 493 | names.sort()
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| 494 | for name in names:
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| 495 | print colours[name], name
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| 496 |
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| 497 |
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| 498 | def load_colours(file='/usr/local/lib/rgb.txt'):
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| 499 | """
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|---|
| 500 | Load the colour dictionary from the specified file.
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| 501 | """
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| 502 | print 'Loading colour dictionary from', file
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| 503 | rgb = open(file, 'r')
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| 504 |
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| 505 | while True:
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| 506 | line = rgb.readline()
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| 507 | if line == '': break
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| 508 | tmp = line.split()
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| 509 |
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| 510 | if len(tmp) == 4:
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| 511 | if tmp[3][:4] == 'gray': continue
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| 512 | if tmp[3].lower().find('gray') != -1: continue
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| 513 |
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| 514 | name = tmp[3][0].upper() + tmp[3][1:]
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| 515 | r, g, b = int(tmp[0]), int(tmp[1]), int(tmp[2])
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| 516 | colours[name] = '#%2.2x%2.2x%2.2x' % (r, g, b)
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