| 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 | |
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| 19 | # Force use of the newfangled toolbar. |
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| 20 | matplotlib.rcParams['toolbar'] = 'toolbar2' |
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| 21 | |
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| 22 | # Colour dictionary. |
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| 23 | colours = {} |
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| 24 | |
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| 25 | class ASAPlot: |
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| 26 | """ |
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| 27 | ASAP plotting class based on matplotlib. |
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| 28 | """ |
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| 29 | |
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| 30 | def __init__(self, rows=1, cols=0, title='', size=(8,6), buffering=False): |
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| 31 | """ |
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| 32 | Create a new instance of the ASAPlot plotting class. |
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| 33 | """ |
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| 34 | self.window = Tk.Tk() |
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| 35 | |
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| 36 | self.frame1 = Tk.Frame(self.window, relief=Tk.RIDGE, borderwidth=4) |
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| 37 | self.frame1.pack(fill=Tk.BOTH) |
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| 38 | |
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| 39 | self.figure = Figure(figsize=size, facecolor='#ddddee') |
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| 40 | self.canvas = FigureCanvasTkAgg(self.figure, master=self.frame1) |
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| 41 | self.canvas.get_tk_widget().pack(side=Tk.TOP, fill=Tk.BOTH, expand=1) |
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| 42 | |
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| 43 | # Simply instantiating this is enough to get a working toolbar. |
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| 44 | self.figmgr = FigureManagerTkAgg(self.canvas, 1, self.window) |
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| 45 | self.window.wm_title('ASAPlot graphics window') |
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| 46 | |
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| 47 | self.set_title(title) |
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| 48 | self.subplots = [] |
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| 49 | if rows > 0: |
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| 50 | self.set_panels(rows, cols) |
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| 51 | |
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| 52 | |
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| 53 | # Set matplotlib default colour sequence. |
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| 54 | self.colours = [1, 'b', 'g', 'r', 'c', 'm', 'y', 'k', 'w'] |
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| 55 | self.attributes = {} |
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| 56 | self.loc = 1 |
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| 57 | |
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| 58 | matplotlib.interactive = True |
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| 59 | self.buffering = buffering |
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| 60 | |
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| 61 | self.canvas.show() |
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| 62 | |
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| 63 | |
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| 64 | def clear(self): |
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| 65 | """ |
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| 66 | Delete all lines from the plot. Line numbering will restart from 1. |
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| 67 | """ |
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| 68 | |
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| 69 | for i in range(1,len(self.lines)+1): |
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| 70 | self.delete(i) |
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| 71 | |
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| 72 | self.axes.clear() |
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| 73 | self.colours[0] = 1 |
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| 74 | self.lines = [] |
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| 75 | |
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| 76 | |
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| 77 | def delete(self, numbers=None): |
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| 78 | """ |
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| 79 | Delete the 0-relative line number, default is to delete the last. |
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| 80 | The remaining lines are NOT renumbered. |
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| 81 | """ |
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| 82 | |
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| 83 | if numbers is None: numbers = [len(self.lines)-1] |
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| 84 | |
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| 85 | if not hasattr(numbers, '__iter__'): |
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| 86 | numbers = [numbers] |
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| 87 | |
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| 88 | for number in numbers: |
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| 89 | if 0 <= number < len(self.lines): |
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| 90 | if self.lines[number] is not None: |
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| 91 | for line in self.lines[number]: |
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| 92 | line.set_linestyle('None') |
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| 93 | self.lines[number] = None |
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| 94 | |
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| 95 | self.show() |
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| 96 | |
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| 97 | |
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| 98 | def get_line(self): |
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| 99 | """ |
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| 100 | Get the current default line attributes. |
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| 101 | """ |
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| 102 | return self.attributes |
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| 103 | |
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| 104 | |
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| 105 | def hold(self, hold=True): |
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| 106 | """ |
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| 107 | Buffer graphics until subsequently released. |
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| 108 | """ |
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| 109 | self.buffering = hold |
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| 110 | |
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| 111 | |
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| 112 | def legend(self, loc=1): |
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| 113 | """ |
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| 114 | Add a legend to the plot. |
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| 115 | |
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| 116 | Any other value for loc else disables the legend: |
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| 117 | 1: upper right |
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| 118 | 2: upper left |
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| 119 | 3: lower left |
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| 120 | 4: lower right |
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| 121 | 5: right |
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| 122 | 6: center left |
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| 123 | 7: center right |
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| 124 | 8: lower center |
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| 125 | 9: upper center |
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| 126 | 10: center |
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| 127 | |
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| 128 | """ |
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| 129 | if 1 > loc > 10: loc = 0 |
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| 130 | self.loc = loc |
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| 131 | self.show() |
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| 132 | |
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| 133 | |
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| 134 | def map(self): |
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| 135 | """ |
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| 136 | Reveal the ASAPlot graphics window and bring it to the top of the |
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| 137 | window stack. |
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| 138 | """ |
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| 139 | self.window.wm_deiconify() |
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| 140 | self.window.lift() |
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| 141 | |
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| 142 | |
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| 143 | def palette(self, pen=None, colours=None): |
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| 144 | """ |
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| 145 | Redefine the colour sequence. |
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| 146 | |
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| 147 | pen is the pen number to use for the next plot; this will be auto- |
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| 148 | incremented. |
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| 149 | |
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| 150 | colours is the list of pen colours. Colour may be specified via |
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| 151 | the single letter values understood by matplotlib: |
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| 152 | |
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| 153 | b: blue |
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| 154 | g: green |
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| 155 | r: red |
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| 156 | c: cyan |
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| 157 | m: magenta |
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| 158 | y: yellow |
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| 159 | k: black |
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| 160 | w: white |
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| 161 | |
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| 162 | or via the full name as listed in the colour dictionary which is |
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| 163 | loaded by default by load_colours() from rgb.txt and listed by |
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| 164 | list_colours(). |
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| 165 | """ |
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| 166 | |
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| 167 | if pen is None and colours is None: |
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| 168 | self.colours = [] |
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| 169 | return |
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| 170 | |
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| 171 | if pen is None: |
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| 172 | if not len(self.colours): |
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| 173 | self.colours = [1] |
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| 174 | else: |
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| 175 | self.colours[0] = pen |
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| 176 | |
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| 177 | if colours is None: |
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| 178 | return |
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| 179 | |
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| 180 | cols = [] |
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| 181 | for col in colours: |
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| 182 | cols.append(get_colour(col)) |
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| 183 | |
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| 184 | self.colours[1:] = cols |
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| 185 | |
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| 186 | if 0 > self.colours[0] > len(self.colours): |
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| 187 | self.colours[0] = 1 |
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| 188 | |
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| 189 | |
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| 190 | def plot(self, x=None, y=None, mask=None, fmt=None, add=None): |
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| 191 | """ |
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| 192 | Plot the next line in the current frame using the current line |
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| 193 | attributes. The ASAPlot graphics window will be mapped and raised. |
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| 194 | |
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| 195 | The argument list works a bit like the matlab plot() function. |
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| 196 | """ |
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| 197 | |
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| 198 | if x is None: |
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| 199 | if y is None: return |
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| 200 | x = range(len(y)) |
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| 201 | |
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| 202 | elif y is None: |
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| 203 | y = x |
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| 204 | x = range(len(y)) |
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| 205 | |
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| 206 | if mask is None: |
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| 207 | if fmt is None: |
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| 208 | line = self.axes.plot(x, y) |
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| 209 | else: |
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| 210 | line = self.axes.plot(x, y, fmt) |
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| 211 | else: |
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| 212 | segments = [] |
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| 213 | |
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| 214 | mask = list(mask) |
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| 215 | i = 0 |
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| 216 | while mask[i:].count(1): |
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| 217 | i += mask[i:].index(1) |
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| 218 | if mask[i:].count(0): |
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| 219 | j = i + mask[i:].index(0) |
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| 220 | else: |
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| 221 | j = len(mask) |
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| 222 | |
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| 223 | segments.append(x[i:j]) |
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| 224 | segments.append(y[i:j]) |
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| 225 | |
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| 226 | i = j |
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| 227 | |
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| 228 | line = self.axes.plot(*segments) |
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| 229 | |
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| 230 | # Add to an existing line? |
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| 231 | if add is None or len(self.lines) < add < 0: |
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| 232 | self.lines.append(line) |
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| 233 | i = len(self.lines) - 1 |
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| 234 | else: |
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| 235 | if add == 0: add = len(self.lines) |
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| 236 | i = add - 1 |
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| 237 | self.lines[i].extend(line) |
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| 238 | |
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| 239 | # Set/reset attributes for the line. |
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| 240 | gotcolour = False |
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| 241 | for k, v in self.attributes.iteritems(): |
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| 242 | if k == 'color': gotcolour = True |
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| 243 | for segment in self.lines[i]: |
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| 244 | getattr(segment, "set_%s"%k)(v) |
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| 245 | |
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| 246 | if not gotcolour and len(self.colours): |
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| 247 | for segment in self.lines[i]: |
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| 248 | getattr(segment, "set_color")(self.colours[self.colours[0]]) |
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| 249 | |
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| 250 | self.colours[0] += 1 |
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| 251 | if self.colours[0] >= len(self.colours): |
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| 252 | self.colours[0] = 1 |
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| 253 | |
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| 254 | self.show() |
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| 255 | |
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| 256 | |
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| 257 | def quit(self): |
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| 258 | """ |
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| 259 | Destroy the ASAPlot graphics window. |
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| 260 | """ |
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| 261 | self.window.destroy() |
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| 262 | |
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| 263 | |
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| 264 | def release(self): |
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| 265 | """ |
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| 266 | Release buffered graphics. |
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| 267 | """ |
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| 268 | self.buffering = False |
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| 269 | self.show() |
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| 270 | |
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| 271 | |
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| 272 | def set_axes(self, what=None, *args, **kwargs): |
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| 273 | """ |
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| 274 | Set attributes for the axes by calling the relevant Axes.set_*() |
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| 275 | method. Colour translation is done as described in the doctext |
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| 276 | for palette(). |
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| 277 | """ |
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| 278 | |
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| 279 | if what is None: return |
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| 280 | if what[-6:] == 'colour': what = what[:-6] + 'color' |
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| 281 | |
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| 282 | newargs = {} |
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| 283 | for k, v in kwargs.iteritems(): |
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| 284 | k = k.lower() |
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| 285 | if k == 'colour': k = 'color' |
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| 286 | |
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| 287 | if k == 'color': |
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| 288 | v = get_colour(v) |
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| 289 | |
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| 290 | newargs[k] = v |
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| 291 | |
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| 292 | getattr(self.axes, "set_%s"%what)(*args, **newargs) |
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| 293 | self.show() |
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| 294 | |
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| 295 | |
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| 296 | def set_figure(self, what=None, *args, **kwargs): |
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| 297 | """ |
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| 298 | Set attributes for the figure by calling the relevant Figure.set_*() |
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| 299 | method. Colour translation is done as described in the doctext |
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| 300 | for palette(). |
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| 301 | """ |
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| 302 | |
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| 303 | if what is None: return |
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| 304 | if what[-6:] == 'colour': what = what[:-6] + 'color' |
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| 305 | if what[-5:] == 'color' and len(args): |
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| 306 | args = (get_colour(args[0]),) |
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| 307 | |
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| 308 | newargs = {} |
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| 309 | for k, v in kwargs.iteritems(): |
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| 310 | k = k.lower() |
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| 311 | if k == 'colour': k = 'color' |
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| 312 | |
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| 313 | if k == 'color': |
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| 314 | v = get_colour(v) |
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| 315 | |
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| 316 | newargs[k] = v |
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| 317 | |
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| 318 | getattr(self.figure, "set_%s"%what)(*args, **newargs) |
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| 319 | self.show() |
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| 320 | |
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| 321 | |
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| 322 | def set_line(self, number=None, **kwargs): |
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| 323 | """ |
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| 324 | Set attributes for the specified line, or else the next line(s) |
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| 325 | to be plotted. |
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| 326 | |
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| 327 | number is the 0-relative number of a line that has already been |
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| 328 | plotted. If no such line exists, attributes are recorded and used |
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| 329 | for the next line(s) to be plotted. |
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| 330 | |
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| 331 | Keyword arguments specify Line2D attributes, e.g. color='r'. Do |
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| 332 | |
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| 333 | import matplotlib |
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| 334 | help(matplotlib.lines) |
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| 335 | |
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| 336 | The set_* methods of class Line2D define the attribute names and |
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| 337 | values. For non-US usage, "colour" is recognized as synonymous with |
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| 338 | "color". |
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| 339 | |
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| 340 | Set the value to None to delete an attribute. |
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| 341 | |
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| 342 | Colour translation is done as described in the doctext for palette(). |
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| 343 | """ |
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| 344 | |
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| 345 | redraw = False |
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| 346 | for k, v in kwargs.iteritems(): |
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| 347 | k = k.lower() |
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| 348 | if k == 'colour': k = 'color' |
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| 349 | |
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| 350 | if k == 'color': |
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| 351 | v = get_colour(v) |
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| 352 | |
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| 353 | if 0 <= number < len(self.lines): |
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| 354 | if self.lines[number] is not None: |
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| 355 | for line in self.lines[number]: |
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| 356 | getattr(line, "set_%s"%k)(v) |
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| 357 | redraw = True |
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| 358 | else: |
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| 359 | if v is None: |
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| 360 | del self.attributes[k] |
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| 361 | else: |
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| 362 | self.attributes[k] = v |
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| 363 | |
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| 364 | if redraw: self.show() |
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| 365 | |
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| 366 | |
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| 367 | def set_panels(self, rows=1, cols=0, n=-1): |
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| 368 | """ |
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| 369 | Set the panel layout. |
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| 370 | |
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| 371 | rows and cols, if cols != 0, specify the number of rows and columns in |
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| 372 | a regular layout. (Indexing of these panels in matplotlib is row- |
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| 373 | major, i.e. column varies fastest.) |
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| 374 | |
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| 375 | cols == 0 is interpreted as a retangular layout that accomodates |
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| 376 | 'rows' panels, e.g. rows == 6, cols == 0 is equivalent to |
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| 377 | rows == 2, cols == 3. |
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| 378 | |
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| 379 | 0 <= n < rows*cols is interpreted as the 0-relative panel number in |
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| 380 | the configuration specified by rows and cols to be added to the |
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| 381 | current figure as its next 0-relative panel number (i). This allows |
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| 382 | non-regular panel layouts to be constructed via multiple calls. Any |
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| 383 | other value of n clears the plot and produces a rectangular array of |
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| 384 | empty panels. |
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| 385 | """ |
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| 386 | if n < 0 and len(self.subplots): |
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| 387 | self.figure.clear() |
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| 388 | self.set_title() |
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| 389 | |
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| 390 | if rows < 1: |
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| 391 | rows = 1 |
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| 392 | |
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| 393 | if cols == 0: |
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| 394 | i = int(sqrt(rows)) |
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| 395 | if i*i < rows: i += 1 |
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| 396 | cols = i |
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| 397 | |
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| 398 | if i*(i-1) >= rows: i -= 1 |
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| 399 | rows = i |
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| 400 | |
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| 401 | if 0 <= n < rows*cols: |
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| 402 | i = len(self.subplots) |
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| 403 | self.subplots.append({}) |
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| 404 | self.subplots[i]['axes'] = self.figure.add_subplot(rows, |
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| 405 | cols, n+1) |
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| 406 | self.subplots[i]['lines'] = [] |
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| 407 | |
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| 408 | if i == 0: self.subplot() |
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| 409 | |
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| 410 | else: |
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| 411 | self.subplots = [] |
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| 412 | for i in range(0,rows*cols): |
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| 413 | self.subplots.append({}) |
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| 414 | self.subplots[i]['axes'] = self.figure.add_subplot(rows, |
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| 415 | cols, i+1) |
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| 416 | self.subplots[i]['lines'] = [] |
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| 417 | |
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| 418 | self.subplot() |
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| 419 | |
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| 420 | |
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| 421 | def set_title(self, title=None): |
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| 422 | """ |
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| 423 | Set the title of the plot window. Use the previous title if title is |
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| 424 | omitted. |
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| 425 | """ |
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| 426 | if title is not None: |
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| 427 | self.title = title |
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| 428 | |
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| 429 | self.figure.text(0.5, 0.95, self.title, horizontalalignment='center') |
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| 430 | |
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| 431 | |
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| 432 | def show(self): |
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| 433 | """ |
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| 434 | Show graphics dependent on the current buffering state. |
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| 435 | """ |
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| 436 | if not self.buffering: |
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| 437 | if self.loc: |
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| 438 | lines = [] |
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| 439 | labels = [] |
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| 440 | i = 0 |
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| 441 | for line in self.lines: |
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| 442 | i += 1 |
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| 443 | if line is not None: |
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| 444 | lines.append(line[0]) |
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| 445 | lbl = line[0].get_label() |
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| 446 | if lbl == '': |
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| 447 | lbl = str(i) |
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| 448 | labels.append(lbl) |
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| 449 | |
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| 450 | if len(lines): |
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| 451 | self.axes.legend(tuple(lines), tuple(labels), self.loc) |
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| 452 | else: |
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| 453 | self.axes.legend((' ')) |
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| 454 | |
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| 455 | self.window.wm_deiconify() |
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| 456 | self.canvas.show() |
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| 457 | |
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| 458 | |
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| 459 | def subplot(self, i=0): |
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| 460 | """ |
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| 461 | Set the subplot to the 0-relative panel number as defined by one or |
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| 462 | more invokations of set_panels(). |
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| 463 | """ |
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| 464 | l = len(self.subplots) |
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| 465 | if l: |
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| 466 | i = i%l |
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| 467 | self.axes = self.subplots[i]['axes'] |
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| 468 | self.lines = self.subplots[i]['lines'] |
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| 469 | |
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| 470 | |
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| 471 | def terminate(self): |
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| 472 | """ |
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| 473 | Clear the figure. |
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| 474 | """ |
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| 475 | self.window.destroy() |
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| 476 | |
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| 477 | |
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| 478 | def text(self, *args, **kwargs): |
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| 479 | """ |
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| 480 | Add text to the figure. |
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| 481 | """ |
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| 482 | self.figure.text(*args, **kwargs) |
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| 483 | self.show() |
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| 484 | |
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| 485 | |
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| 486 | def unmap(self): |
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| 487 | """ |
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| 488 | Hide the ASAPlot graphics window. |
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| 489 | """ |
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| 490 | self.window.wm_withdraw() |
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| 491 | |
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| 492 | |
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| 493 | def get_colour(colour='black'): |
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| 494 | """ |
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| 495 | Look up a colour by name in the colour dictionary. Matches are |
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| 496 | case-insensitive, insensitive to blanks, and 'gray' matches 'grey'. |
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| 497 | """ |
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| 498 | |
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| 499 | if colour is None: return None |
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| 500 | |
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| 501 | if match('[rgbcmykw]$', colour): return colour |
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| 502 | if match('#[\da-fA-F]{6}$', colour): return colour |
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| 503 | |
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| 504 | if len(colours) == 0: load_colours() |
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| 505 | |
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| 506 | # Try a quick match. |
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| 507 | if colours.has_key(colour): return colours[colour] |
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| 508 | |
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| 509 | colour = colour.replace(' ','').lower() |
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| 510 | colour = colour.replace('gray','grey') |
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| 511 | for name in colours.keys(): |
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| 512 | if name.lower() == colour: |
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| 513 | return colours[name] |
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| 514 | |
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| 515 | return '#000000' |
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| 516 | |
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| 517 | |
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| 518 | def list_colours(): |
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| 519 | """ |
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| 520 | List the contents of the colour dictionary sorted by name. |
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| 521 | """ |
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| 522 | |
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| 523 | if len(colours) == 0: load_colours() |
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| 524 | |
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| 525 | names = colours.keys() |
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| 526 | names.sort() |
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| 527 | for name in names: |
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| 528 | print colours[name], name |
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| 529 | |
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| 530 | |
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| 531 | def load_colours(file='/usr/local/lib/rgb.txt'): |
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| 532 | """ |
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| 533 | Load the colour dictionary from the specified file. |
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| 534 | """ |
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| 535 | print 'Loading colour dictionary from', file |
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| 536 | rgb = open(file, 'r') |
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| 537 | |
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| 538 | while True: |
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| 539 | line = rgb.readline() |
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| 540 | if line == '': break |
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| 541 | tmp = line.split() |
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| 542 | |
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| 543 | if len(tmp) == 4: |
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| 544 | if tmp[3][:4] == 'gray': continue |
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| 545 | if tmp[3].lower().find('gray') != -1: continue |
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| 546 | |
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| 547 | name = tmp[3][0].upper() + tmp[3][1:] |
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| 548 | r, g, b = int(tmp[0]), int(tmp[1]), int(tmp[2]) |
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| 549 | colours[name] = '#%2.2x%2.2x%2.2x' % (r, g, b) |
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