| 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 | |
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| 8 | import matplotlib |
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| 9 | |
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| 10 | from matplotlib.figure import Figure, Text |
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| 11 | from matplotlib.font_manager import FontProperties as FP |
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| 12 | from matplotlib.numerix import sqrt |
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| 13 | from matplotlib import rc, rcParams |
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| 14 | from asap import rcParams as asaprcParams |
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| 15 | from matplotlib.ticker import ScalarFormatter |
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| 16 | from matplotlib.ticker import NullLocator |
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| 17 | from matplotlib.transforms import blend_xy_sep_transform |
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| 18 | |
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| 19 | if int(matplotlib.__version__.split(".")[1]) < 87: |
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| 20 | print "Warning: matplotlib version < 0.87. This might cause errors. Please upgrade." |
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| 21 | |
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| 22 | class MyFormatter(ScalarFormatter): |
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| 23 | def __call__(self, x, pos=None): |
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| 24 | #last = len(self.locs)-2 |
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| 25 | if pos==0: |
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| 26 | return '' |
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| 27 | else: return ScalarFormatter.__call__(self, x, pos) |
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| 28 | |
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| 29 | class asaplotbase: |
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| 30 | """ |
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| 31 | ASAP plotting base class based on matplotlib. |
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| 32 | """ |
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| 33 | |
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| 34 | def __init__(self, rows=1, cols=0, title='', size=(8,6), buffering=False): |
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| 35 | """ |
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| 36 | Create a new instance of the ASAPlot plotting class. |
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| 37 | |
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| 38 | If rows < 1 then a separate call to set_panels() is required to define |
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| 39 | the panel layout; refer to the doctext for set_panels(). |
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| 40 | """ |
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| 41 | self.is_dead = False |
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| 42 | self.figure = Figure(figsize=size, facecolor='#ddddee') |
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| 43 | self.canvas = None |
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| 44 | |
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| 45 | self.set_title(title) |
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| 46 | self.subplots = [] |
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| 47 | if rows > 0: |
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| 48 | self.set_panels(rows, cols) |
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| 49 | |
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| 50 | # Set matplotlib default colour sequence. |
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| 51 | self.colormap = "green red black cyan magenta orange blue purple yellow pink".split() |
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| 52 | |
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| 53 | c = asaprcParams['plotter.colours'] |
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| 54 | if isinstance(c,str) and len(c) > 0: |
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| 55 | self.colormap = c.split() |
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| 56 | |
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| 57 | self.lsalias = {"line": [1,0], |
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| 58 | "dashdot": [4,2,1,2], |
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| 59 | "dashed" : [4,2,4,2], |
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| 60 | "dotted" : [1,2], |
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| 61 | "dashdotdot": [4,2,1,2,1,2], |
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| 62 | "dashdashdot": [4,2,4,2,1,2] |
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| 63 | } |
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| 64 | |
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| 65 | styles = "line dashed dotted dashdot".split() |
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| 66 | c = asaprcParams['plotter.linestyles'] |
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| 67 | if isinstance(c,str) and len(c) > 0: |
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| 68 | styles = c.split() |
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| 69 | s = [] |
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| 70 | for ls in styles: |
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| 71 | if self.lsalias.has_key(ls): |
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| 72 | s.append(self.lsalias.get(ls)) |
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| 73 | else: |
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| 74 | s.append('-') |
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| 75 | self.linestyles = s |
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| 76 | |
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| 77 | self.color = 0; |
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| 78 | self.linestyle = 0; |
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| 79 | self.attributes = {} |
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| 80 | self.loc = 0 |
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| 81 | |
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| 82 | self.buffering = buffering |
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| 83 | |
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| 84 | def clear(self): |
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| 85 | """ |
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| 86 | Delete all lines from the plot. Line numbering will restart from 0. |
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| 87 | """ |
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| 88 | |
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| 89 | for i in range(len(self.lines)): |
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| 90 | self.delete(i) |
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| 91 | self.axes.clear() |
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| 92 | self.color = 0 |
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| 93 | self.lines = [] |
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| 94 | |
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| 95 | def palette(self, color, colormap=None, linestyle=0, linestyles=None): |
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| 96 | if colormap: |
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| 97 | if isinstance(colormap,list): |
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| 98 | self.colormap = colormap |
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| 99 | elif isinstance(colormap,str): |
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| 100 | self.colormap = colormap.split() |
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| 101 | if 0 <= color < len(self.colormap): |
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| 102 | self.color = color |
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| 103 | if linestyles: |
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| 104 | self.linestyles = [] |
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| 105 | if isinstance(linestyles,list): |
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| 106 | styles = linestyles |
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| 107 | elif isinstance(linestyles,str): |
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| 108 | styles = linestyles.split() |
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| 109 | for ls in styles: |
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| 110 | if self.lsalias.has_key(ls): |
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| 111 | self.linestyles.append(self.lsalias.get(ls)) |
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| 112 | else: |
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| 113 | self.linestyles.append(self.lsalias.get('line')) |
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| 114 | if 0 <= linestyle < len(self.linestyles): |
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| 115 | self.linestyle = linestyle |
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| 116 | |
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| 117 | def delete(self, numbers=None): |
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| 118 | """ |
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| 119 | Delete the 0-relative line number, default is to delete the last. |
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| 120 | The remaining lines are NOT renumbered. |
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| 121 | """ |
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| 122 | |
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| 123 | if numbers is None: numbers = [len(self.lines)-1] |
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| 124 | |
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| 125 | if not hasattr(numbers, '__iter__'): |
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| 126 | numbers = [numbers] |
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| 127 | |
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| 128 | for number in numbers: |
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| 129 | if 0 <= number < len(self.lines): |
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| 130 | if self.lines[number] is not None: |
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| 131 | for line in self.lines[number]: |
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| 132 | line.set_linestyle('None') |
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| 133 | self.lines[number] = None |
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| 134 | self.show() |
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| 135 | |
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| 136 | def get_line(self): |
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| 137 | """ |
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| 138 | Get the current default line attributes. |
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| 139 | """ |
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| 140 | return self.attributes |
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| 141 | |
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| 142 | |
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| 143 | def hist(self, x=None, y=None, fmt=None, add=None): |
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| 144 | """ |
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| 145 | Plot a histogram. N.B. the x values refer to the start of the |
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| 146 | histogram bin. |
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| 147 | |
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| 148 | fmt is the line style as in plot(). |
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| 149 | """ |
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| 150 | from matplotlib.numerix import array |
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| 151 | from matplotlib.numerix.ma import MaskedArray |
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| 152 | if x is None: |
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| 153 | if y is None: return |
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| 154 | x = range(len(y)) |
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| 155 | |
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| 156 | if len(x) != len(y): |
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| 157 | return |
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| 158 | l2 = 2*len(x) |
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| 159 | x2 = range(l2) |
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| 160 | y2 = range(12) |
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| 161 | y2 = range(l2) |
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| 162 | m2 = range(l2) |
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| 163 | ymsk = y.raw_mask() |
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| 164 | ydat = y.raw_data() |
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| 165 | for i in range(l2): |
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| 166 | x2[i] = x[i/2] |
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| 167 | m2[i] = ymsk[i/2] |
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| 168 | |
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| 169 | y2[0] = 0.0 |
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| 170 | for i in range(1,l2): |
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| 171 | y2[i] = ydat[(i-1)/2] |
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| 172 | |
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| 173 | self.plot(x2, MaskedArray(y2,mask=m2,copy=0), fmt, add) |
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| 174 | |
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| 175 | |
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| 176 | def hold(self, hold=True): |
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| 177 | """ |
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| 178 | Buffer graphics until subsequently released. |
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| 179 | """ |
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| 180 | self.buffering = hold |
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| 181 | |
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| 182 | |
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| 183 | def legend(self, loc=None): |
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| 184 | """ |
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| 185 | Add a legend to the plot. |
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| 186 | |
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| 187 | Any other value for loc else disables the legend: |
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| 188 | 1: upper right |
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| 189 | 2: upper left |
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| 190 | 3: lower left |
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| 191 | 4: lower right |
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| 192 | 5: right |
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| 193 | 6: center left |
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| 194 | 7: center right |
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| 195 | 8: lower center |
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| 196 | 9: upper center |
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| 197 | 10: center |
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| 198 | |
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| 199 | """ |
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| 200 | if isinstance(loc, int): |
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| 201 | self.loc = None |
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| 202 | if 0 <= loc <= 10: self.loc = loc |
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| 203 | else: |
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| 204 | self.loc = None |
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| 205 | #self.show() |
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| 206 | |
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| 207 | |
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| 208 | def plot(self, x=None, y=None, fmt=None, add=None): |
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| 209 | """ |
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| 210 | Plot the next line in the current frame using the current line |
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| 211 | attributes. The ASAPlot graphics window will be mapped and raised. |
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| 212 | |
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| 213 | The argument list works a bit like the matlab plot() function. |
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| 214 | """ |
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| 215 | if x is None: |
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| 216 | if y is None: return |
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| 217 | x = range(len(y)) |
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| 218 | |
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| 219 | elif y is None: |
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| 220 | y = x |
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| 221 | x = range(len(y)) |
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| 222 | if fmt is None: |
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| 223 | line = self.axes.plot(x, y) |
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| 224 | else: |
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| 225 | line = self.axes.plot(x, y, fmt) |
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| 226 | |
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| 227 | # Add to an existing line? |
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| 228 | i = None |
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| 229 | if add is None or len(self.lines) < add < 0: |
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| 230 | # Don't add. |
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| 231 | self.lines.append(line) |
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| 232 | i = len(self.lines) - 1 |
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| 233 | else: |
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| 234 | if add == 0: add = len(self.lines) |
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| 235 | i = add - 1 |
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| 236 | self.lines[i].extend(line) |
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| 237 | |
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| 238 | # Set/reset attributes for the line. |
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| 239 | gotcolour = False |
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| 240 | for k, v in self.attributes.iteritems(): |
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| 241 | if k == 'color': gotcolour = True |
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| 242 | for segment in self.lines[i]: |
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| 243 | getattr(segment, "set_%s"%k)(v) |
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| 244 | |
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| 245 | if not gotcolour and len(self.colormap): |
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| 246 | for segment in self.lines[i]: |
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| 247 | getattr(segment, "set_color")(self.colormap[self.color]) |
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| 248 | if len(self.colormap) == 1: |
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| 249 | getattr(segment, "set_dashes")(self.linestyles[self.linestyle]) |
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| 250 | |
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| 251 | self.color += 1 |
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| 252 | if self.color >= len(self.colormap): |
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| 253 | self.color = 0 |
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| 254 | |
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| 255 | if len(self.colormap) == 1: |
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| 256 | self.linestyle += 1 |
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| 257 | if self.linestyle >= len(self.linestyles): |
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| 258 | self.linestyle = 0 |
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| 259 | |
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| 260 | self.show() |
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| 261 | |
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| 262 | |
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| 263 | def position(self): |
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| 264 | """ |
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| 265 | Use the mouse to get a position from a graph. |
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| 266 | """ |
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| 267 | |
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| 268 | def position_disable(event): |
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| 269 | self.register('button_press', None) |
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| 270 | print '%.4f, %.4f' % (event.xdata, event.ydata) |
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| 271 | |
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| 272 | print 'Press any mouse button...' |
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| 273 | self.register('button_press', position_disable) |
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| 274 | |
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| 275 | |
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| 276 | def region(self): |
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| 277 | """ |
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| 278 | Use the mouse to get a rectangular region from a plot. |
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| 279 | |
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| 280 | The return value is [x0, y0, x1, y1] in world coordinates. |
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| 281 | """ |
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| 282 | |
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| 283 | def region_start(event): |
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| 284 | height = self.canvas.figure.bbox.height() |
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| 285 | self.rect = {'fig': None, 'height': height, |
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| 286 | 'x': event.x, 'y': height - event.y, |
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| 287 | 'world': [event.xdata, event.ydata, |
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| 288 | event.xdata, event.ydata]} |
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| 289 | self.register('button_press', None) |
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| 290 | self.register('motion_notify', region_draw) |
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| 291 | self.register('button_release', region_disable) |
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| 292 | |
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| 293 | def region_draw(event): |
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| 294 | self.canvas._tkcanvas.delete(self.rect['fig']) |
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| 295 | self.rect['fig'] = self.canvas._tkcanvas.create_rectangle( |
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| 296 | self.rect['x'], self.rect['y'], |
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| 297 | event.x, self.rect['height'] - event.y) |
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| 298 | |
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| 299 | def region_disable(event): |
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| 300 | self.register('motion_notify', None) |
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| 301 | self.register('button_release', None) |
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| 302 | |
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| 303 | self.canvas._tkcanvas.delete(self.rect['fig']) |
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| 304 | |
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| 305 | self.rect['world'][2:4] = [event.xdata, event.ydata] |
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| 306 | print '(%.2f, %.2f) (%.2f, %.2f)' % (self.rect['world'][0], |
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| 307 | self.rect['world'][1], self.rect['world'][2], |
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| 308 | self.rect['world'][3]) |
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| 309 | |
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| 310 | self.register('button_press', region_start) |
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| 311 | |
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| 312 | # This has to be modified to block and return the result (currently |
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| 313 | # printed by region_disable) when that becomes possible in matplotlib. |
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| 314 | |
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| 315 | return [0.0, 0.0, 0.0, 0.0] |
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| 316 | |
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| 317 | |
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| 318 | def register(self, type=None, func=None): |
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| 319 | """ |
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| 320 | Register, reregister, or deregister events of type 'button_press', |
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| 321 | 'button_release', or 'motion_notify'. |
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| 322 | |
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| 323 | The specified callback function should have the following signature: |
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| 324 | |
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| 325 | def func(event) |
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| 326 | |
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| 327 | where event is an MplEvent instance containing the following data: |
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| 328 | |
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| 329 | name # Event name. |
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| 330 | canvas # FigureCanvas instance generating the event. |
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| 331 | x = None # x position - pixels from left of canvas. |
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| 332 | y = None # y position - pixels from bottom of canvas. |
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| 333 | button = None # Button pressed: None, 1, 2, 3. |
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| 334 | key = None # Key pressed: None, chr(range(255)), shift, |
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| 335 | win, or control |
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| 336 | inaxes = None # Axes instance if cursor within axes. |
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| 337 | xdata = None # x world coordinate. |
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| 338 | ydata = None # y world coordinate. |
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| 339 | |
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| 340 | For example: |
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| 341 | |
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| 342 | def mouse_move(event): |
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| 343 | print event.xdata, event.ydata |
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| 344 | |
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| 345 | a = asaplot() |
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| 346 | a.register('motion_notify', mouse_move) |
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| 347 | |
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| 348 | If func is None, the event is deregistered. |
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| 349 | |
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| 350 | Note that in TkAgg keyboard button presses don't generate an event. |
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| 351 | """ |
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| 352 | |
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| 353 | if not self.events.has_key(type): return |
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| 354 | |
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| 355 | if func is None: |
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| 356 | if self.events[type] is not None: |
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| 357 | # It's not clear that this does anything. |
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| 358 | self.canvas.mpl_disconnect(self.events[type]) |
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| 359 | self.events[type] = None |
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| 360 | |
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| 361 | # It seems to be necessary to return events to the toolbar. |
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| 362 | if type == 'motion_notify': |
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| 363 | self.canvas.mpl_connect(type + '_event', |
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| 364 | self.figmgr.toolbar.mouse_move) |
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| 365 | elif type == 'button_press': |
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| 366 | self.canvas.mpl_connect(type + '_event', |
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| 367 | self.figmgr.toolbar.press) |
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| 368 | elif type == 'button_release': |
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| 369 | self.canvas.mpl_connect(type + '_event', |
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| 370 | self.figmgr.toolbar.release) |
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| 371 | |
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| 372 | else: |
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| 373 | self.events[type] = self.canvas.mpl_connect(type + '_event', func) |
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| 374 | |
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| 375 | |
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| 376 | def release(self): |
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| 377 | """ |
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| 378 | Release buffered graphics. |
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| 379 | """ |
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| 380 | self.buffering = False |
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| 381 | self.show() |
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| 382 | |
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| 383 | |
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| 384 | def save(self, fname=None, orientation=None, dpi=None, papertype=None): |
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| 385 | """ |
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| 386 | Save the plot to a file. |
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| 387 | |
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| 388 | fname is the name of the output file. The image format is determined |
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| 389 | from the file suffix; 'png', 'ps', and 'eps' are recognized. If no |
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| 390 | file name is specified 'yyyymmdd_hhmmss.png' is created in the current |
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| 391 | directory. |
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| 392 | """ |
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| 393 | from asap import rcParams |
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| 394 | if papertype is None: |
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| 395 | papertype = rcParams['plotter.papertype'] |
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| 396 | if fname is None: |
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| 397 | from datetime import datetime |
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| 398 | dstr = datetime.now().strftime('%Y%m%d_%H%M%S') |
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| 399 | fname = 'asap'+dstr+'.png' |
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| 400 | |
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| 401 | d = ['png','.ps','eps'] |
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| 402 | |
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| 403 | from os.path import expandvars |
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| 404 | fname = expandvars(fname) |
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| 405 | |
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| 406 | if fname[-3:].lower() in d: |
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| 407 | try: |
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| 408 | if fname[-3:].lower() == ".ps": |
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| 409 | from matplotlib import __version__ as mv |
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| 410 | w = self.figure.figwidth.get() |
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| 411 | h = self.figure.figheight.get() |
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| 412 | |
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| 413 | if orientation is None: |
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| 414 | # oriented |
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| 415 | if w > h: |
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| 416 | orientation = 'landscape' |
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| 417 | else: |
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| 418 | orientation = 'portrait' |
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| 419 | from matplotlib.backends.backend_ps import papersize |
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| 420 | pw,ph = papersize[papertype.lower()] |
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| 421 | ds = None |
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| 422 | if orientation == 'landscape': |
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| 423 | ds = min(ph/w, pw/h) |
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| 424 | else: |
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| 425 | ds = min(pw/w, ph/h) |
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| 426 | ow = ds * w |
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| 427 | oh = ds * h |
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| 428 | self.figure.set_figsize_inches((ow, oh)) |
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| 429 | self.figure.savefig(fname, orientation=orientation, |
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| 430 | papertype=papertype.lower()) |
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| 431 | self.figure.set_figsize_inches((w, h)) |
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| 432 | print 'Written file %s' % (fname) |
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| 433 | else: |
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| 434 | if dpi is None: |
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| 435 | dpi =150 |
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| 436 | self.figure.savefig(fname,dpi=dpi) |
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| 437 | print 'Written file %s' % (fname) |
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| 438 | except IOError, msg: |
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| 439 | print 'Failed to save %s: Error msg was\n\n%s' % (fname, err) |
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| 440 | return |
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| 441 | else: |
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| 442 | print "Invalid image type. Valid types are:" |
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| 443 | print "'ps', 'eps', 'png'" |
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| 444 | |
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| 445 | |
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| 446 | def set_axes(self, what=None, *args, **kwargs): |
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| 447 | """ |
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| 448 | Set attributes for the axes by calling the relevant Axes.set_*() |
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| 449 | method. Colour translation is done as described in the doctext |
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| 450 | for palette(). |
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| 451 | """ |
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| 452 | |
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| 453 | if what is None: return |
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| 454 | if what[-6:] == 'colour': what = what[:-6] + 'color' |
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| 455 | |
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| 456 | newargs = {} |
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| 457 | |
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| 458 | for k, v in kwargs.iteritems(): |
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| 459 | k = k.lower() |
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| 460 | if k == 'colour': k = 'color' |
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| 461 | newargs[k] = v |
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| 462 | |
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| 463 | getattr(self.axes, "set_%s"%what)(*args, **newargs) |
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| 464 | |
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| 465 | self.show() |
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| 466 | |
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| 467 | |
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| 468 | def set_figure(self, what=None, *args, **kwargs): |
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| 469 | """ |
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| 470 | Set attributes for the figure by calling the relevant Figure.set_*() |
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| 471 | method. Colour translation is done as described in the doctext |
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| 472 | for palette(). |
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| 473 | """ |
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| 474 | |
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| 475 | if what is None: return |
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| 476 | if what[-6:] == 'colour': what = what[:-6] + 'color' |
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| 477 | #if what[-5:] == 'color' and len(args): |
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| 478 | # args = (get_colour(args[0]),) |
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| 479 | |
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| 480 | newargs = {} |
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| 481 | for k, v in kwargs.iteritems(): |
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| 482 | k = k.lower() |
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| 483 | if k == 'colour': k = 'color' |
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| 484 | newargs[k] = v |
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| 485 | |
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| 486 | getattr(self.figure, "set_%s"%what)(*args, **newargs) |
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| 487 | self.show() |
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| 488 | |
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| 489 | |
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| 490 | def set_limits(self, xlim=None, ylim=None): |
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| 491 | """ |
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| 492 | Set x-, and y-limits for each subplot. |
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| 493 | |
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| 494 | xlim = [xmin, xmax] as in axes.set_xlim(). |
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| 495 | ylim = [ymin, ymax] as in axes.set_ylim(). |
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| 496 | """ |
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| 497 | for s in self.subplots: |
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| 498 | self.axes = s['axes'] |
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| 499 | self.lines = s['lines'] |
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| 500 | oldxlim = list(self.axes.get_xlim()) |
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| 501 | oldylim = list(self.axes.get_ylim()) |
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| 502 | if xlim is not None: |
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| 503 | for i in range(len(xlim)): |
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| 504 | if xlim[i] is not None: |
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| 505 | oldxlim[i] = xlim[i] |
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| 506 | if ylim is not None: |
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| 507 | for i in range(len(ylim)): |
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| 508 | if ylim[i] is not None: |
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| 509 | oldylim[i] = ylim[i] |
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| 510 | self.axes.set_xlim(oldxlim) |
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| 511 | self.axes.set_ylim(oldylim) |
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| 512 | return |
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| 513 | |
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| 514 | |
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| 515 | def set_line(self, number=None, **kwargs): |
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| 516 | """ |
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| 517 | Set attributes for the specified line, or else the next line(s) |
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| 518 | to be plotted. |
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| 519 | |
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| 520 | number is the 0-relative number of a line that has already been |
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| 521 | plotted. If no such line exists, attributes are recorded and used |
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| 522 | for the next line(s) to be plotted. |
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| 523 | |
|---|
| 524 | Keyword arguments specify Line2D attributes, e.g. color='r'. Do |
|---|
| 525 | |
|---|
| 526 | import matplotlib |
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| 527 | help(matplotlib.lines) |
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| 528 | |
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| 529 | The set_* methods of class Line2D define the attribute names and |
|---|
| 530 | values. For non-US usage, "colour" is recognized as synonymous with |
|---|
| 531 | "color". |
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| 532 | |
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| 533 | Set the value to None to delete an attribute. |
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| 534 | |
|---|
| 535 | Colour translation is done as described in the doctext for palette(). |
|---|
| 536 | """ |
|---|
| 537 | |
|---|
| 538 | redraw = False |
|---|
| 539 | for k, v in kwargs.iteritems(): |
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| 540 | k = k.lower() |
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| 541 | if k == 'colour': k = 'color' |
|---|
| 542 | |
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| 543 | if 0 <= number < len(self.lines): |
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| 544 | if self.lines[number] is not None: |
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| 545 | for line in self.lines[number]: |
|---|
| 546 | getattr(line, "set_%s"%k)(v) |
|---|
| 547 | redraw = True |
|---|
| 548 | else: |
|---|
| 549 | if v is None: |
|---|
| 550 | del self.attributes[k] |
|---|
| 551 | else: |
|---|
| 552 | self.attributes[k] = v |
|---|
| 553 | |
|---|
| 554 | if redraw: self.show() |
|---|
| 555 | |
|---|
| 556 | |
|---|
| 557 | def set_panels(self, rows=1, cols=0, n=-1, nplots=-1, ganged=True): |
|---|
| 558 | """ |
|---|
| 559 | Set the panel layout. |
|---|
| 560 | |
|---|
| 561 | rows and cols, if cols != 0, specify the number of rows and columns in |
|---|
| 562 | a regular layout. (Indexing of these panels in matplotlib is row- |
|---|
| 563 | major, i.e. column varies fastest.) |
|---|
| 564 | |
|---|
| 565 | cols == 0 is interpreted as a retangular layout that accomodates |
|---|
| 566 | 'rows' panels, e.g. rows == 6, cols == 0 is equivalent to |
|---|
| 567 | rows == 2, cols == 3. |
|---|
| 568 | |
|---|
| 569 | 0 <= n < rows*cols is interpreted as the 0-relative panel number in |
|---|
| 570 | the configuration specified by rows and cols to be added to the |
|---|
| 571 | current figure as its next 0-relative panel number (i). This allows |
|---|
| 572 | non-regular panel layouts to be constructed via multiple calls. Any |
|---|
| 573 | other value of n clears the plot and produces a rectangular array of |
|---|
| 574 | empty panels. The number of these may be limited by nplots. |
|---|
| 575 | """ |
|---|
| 576 | if n < 0 and len(self.subplots): |
|---|
| 577 | self.figure.clear() |
|---|
| 578 | self.set_title() |
|---|
| 579 | |
|---|
| 580 | if rows < 1: rows = 1 |
|---|
| 581 | |
|---|
| 582 | if cols <= 0: |
|---|
| 583 | i = int(sqrt(rows)) |
|---|
| 584 | if i*i < rows: i += 1 |
|---|
| 585 | cols = i |
|---|
| 586 | |
|---|
| 587 | if i*(i-1) >= rows: i -= 1 |
|---|
| 588 | rows = i |
|---|
| 589 | |
|---|
| 590 | if 0 <= n < rows*cols: |
|---|
| 591 | i = len(self.subplots) |
|---|
| 592 | self.subplots.append({}) |
|---|
| 593 | |
|---|
| 594 | self.subplots[i]['axes'] = self.figure.add_subplot(rows, |
|---|
| 595 | cols, n+1) |
|---|
| 596 | self.subplots[i]['lines'] = [] |
|---|
| 597 | |
|---|
| 598 | if i == 0: self.subplot(0) |
|---|
| 599 | |
|---|
| 600 | self.rows = 0 |
|---|
| 601 | self.cols = 0 |
|---|
| 602 | |
|---|
| 603 | else: |
|---|
| 604 | self.subplots = [] |
|---|
| 605 | |
|---|
| 606 | if nplots < 1 or rows*cols < nplots: |
|---|
| 607 | nplots = rows*cols |
|---|
| 608 | if ganged: |
|---|
| 609 | hsp,wsp = None,None |
|---|
| 610 | if rows > 1: hsp = 0.0001 |
|---|
| 611 | if cols > 1: wsp = 0.0001 |
|---|
| 612 | self.figure.subplots_adjust(wspace=wsp,hspace=hsp) |
|---|
| 613 | for i in range(nplots): |
|---|
| 614 | self.subplots.append({}) |
|---|
| 615 | self.subplots[i]['axes'] = self.figure.add_subplot(rows, |
|---|
| 616 | cols, i+1) |
|---|
| 617 | self.subplots[i]['lines'] = [] |
|---|
| 618 | |
|---|
| 619 | if ganged: |
|---|
| 620 | # Suppress tick labelling for interior subplots. |
|---|
| 621 | if i <= (rows-1)*cols - 1: |
|---|
| 622 | if i+cols < nplots: |
|---|
| 623 | # Suppress x-labels for frames width |
|---|
| 624 | # adjacent frames |
|---|
| 625 | self.subplots[i]['axes'].xaxis.set_major_locator(NullLocator()) |
|---|
| 626 | self.subplots[i]['axes'].xaxis.label.set_visible(False) |
|---|
| 627 | if i%cols: |
|---|
| 628 | # Suppress y-labels for frames not in the left column. |
|---|
| 629 | for tick in self.subplots[i]['axes'].yaxis.majorTicks: |
|---|
| 630 | tick.label1On = False |
|---|
| 631 | self.subplots[i]['axes'].yaxis.label.set_visible(False) |
|---|
| 632 | # disable the first tick of [1:ncol-1] of the last row |
|---|
| 633 | if (nplots-cols) < i <= nplots-1: |
|---|
| 634 | self.subplots[i]['axes'].xaxis.set_major_formatter(MyFormatter()) |
|---|
| 635 | self.rows = rows |
|---|
| 636 | self.cols = cols |
|---|
| 637 | self.subplot(0) |
|---|
| 638 | |
|---|
| 639 | def set_title(self, title=None): |
|---|
| 640 | """ |
|---|
| 641 | Set the title of the plot window. Use the previous title if title is |
|---|
| 642 | omitted. |
|---|
| 643 | """ |
|---|
| 644 | if title is not None: |
|---|
| 645 | self.title = title |
|---|
| 646 | |
|---|
| 647 | self.figure.text(0.5, 0.95, self.title, horizontalalignment='center') |
|---|
| 648 | |
|---|
| 649 | |
|---|
| 650 | def show(self): |
|---|
| 651 | """ |
|---|
| 652 | Show graphics dependent on the current buffering state. |
|---|
| 653 | """ |
|---|
| 654 | if not self.buffering: |
|---|
| 655 | if self.loc is not None: |
|---|
| 656 | for sp in self.subplots: |
|---|
| 657 | lines = [] |
|---|
| 658 | labels = [] |
|---|
| 659 | i = 0 |
|---|
| 660 | for line in sp['lines']: |
|---|
| 661 | i += 1 |
|---|
| 662 | if line is not None: |
|---|
| 663 | lines.append(line[0]) |
|---|
| 664 | lbl = line[0].get_label() |
|---|
| 665 | if lbl == '': |
|---|
| 666 | lbl = str(i) |
|---|
| 667 | labels.append(lbl) |
|---|
| 668 | |
|---|
| 669 | if len(lines): |
|---|
| 670 | fp = FP(size=rcParams['legend.fontsize']) |
|---|
| 671 | fsz = fp.get_size_in_points() - len(lines) |
|---|
| 672 | fp.set_size(max(fsz,6)) |
|---|
| 673 | sp['axes'].legend(tuple(lines), tuple(labels), |
|---|
| 674 | self.loc, prop=fp) |
|---|
| 675 | else: |
|---|
| 676 | sp['axes'].legend((' ')) |
|---|
| 677 | |
|---|
| 678 | from matplotlib.artist import setp |
|---|
| 679 | fp = FP(size=rcParams['xtick.labelsize']) |
|---|
| 680 | xts = fp.get_size_in_points()- (self.cols)/2 |
|---|
| 681 | fp = FP(size=rcParams['ytick.labelsize']) |
|---|
| 682 | yts = fp.get_size_in_points() - (self.rows)/2 |
|---|
| 683 | for sp in self.subplots: |
|---|
| 684 | ax = sp['axes'] |
|---|
| 685 | s = ax.title.get_size() |
|---|
| 686 | tsize = s-(self.cols+self.rows) |
|---|
| 687 | ax.title.set_size(tsize) |
|---|
| 688 | fp = FP(size=rcParams['axes.labelsize']) |
|---|
| 689 | setp(ax.get_xticklabels(), fontsize=xts) |
|---|
| 690 | setp(ax.get_yticklabels(), fontsize=yts) |
|---|
| 691 | origx = fp.get_size_in_points() |
|---|
| 692 | origy = origx |
|---|
| 693 | off = 0 |
|---|
| 694 | if self.cols > 1: off = self.cols |
|---|
| 695 | xfsize = origx-off |
|---|
| 696 | ax.xaxis.label.set_size(xfsize) |
|---|
| 697 | off = 0 |
|---|
| 698 | if self.rows > 1: off = self.rows |
|---|
| 699 | yfsize = origy-off |
|---|
| 700 | ax.yaxis.label.set_size(yfsize) |
|---|
| 701 | |
|---|
| 702 | def subplot(self, i=None, inc=None): |
|---|
| 703 | """ |
|---|
| 704 | Set the subplot to the 0-relative panel number as defined by one or |
|---|
| 705 | more invokations of set_panels(). |
|---|
| 706 | """ |
|---|
| 707 | l = len(self.subplots) |
|---|
| 708 | if l: |
|---|
| 709 | if i is not None: |
|---|
| 710 | self.i = i |
|---|
| 711 | |
|---|
| 712 | if inc is not None: |
|---|
| 713 | self.i += inc |
|---|
| 714 | |
|---|
| 715 | self.i %= l |
|---|
| 716 | self.axes = self.subplots[self.i]['axes'] |
|---|
| 717 | self.lines = self.subplots[self.i]['lines'] |
|---|
| 718 | |
|---|
| 719 | def text(self, *args, **kwargs): |
|---|
| 720 | """ |
|---|
| 721 | Add text to the figure. |
|---|
| 722 | """ |
|---|
| 723 | self.figure.text(*args, **kwargs) |
|---|
| 724 | self.show() |
|---|
| 725 | |
|---|
| 726 | def vline_with_label(self, x, y, label, |
|---|
| 727 | location='bottom', rotate=0.0, **kwargs): |
|---|
| 728 | """ |
|---|
| 729 | Plot a vertical line with label. |
|---|
| 730 | It takes "world" values fo x and y. |
|---|
| 731 | """ |
|---|
| 732 | ax = self.axes |
|---|
| 733 | # need this to suppress autoscaling during this function |
|---|
| 734 | self.axes.set_autoscale_on(False) |
|---|
| 735 | ymin = 0.0 |
|---|
| 736 | ymax = 1.0 |
|---|
| 737 | valign = 'center' |
|---|
| 738 | if location.lower() == 'top': |
|---|
| 739 | y = max(0.0, y) |
|---|
| 740 | elif location.lower() == 'bottom': |
|---|
| 741 | y = min(0.0, y) |
|---|
| 742 | lbloffset = 0.06 |
|---|
| 743 | # a rough estimate for the bb of the text |
|---|
| 744 | if rotate > 0.0: lbloffset = 0.03*len(label) |
|---|
| 745 | peakoffset = 0.01 |
|---|
| 746 | xy0 = ax.transData.xy_tup((x,y)) |
|---|
| 747 | # get relative coords |
|---|
| 748 | xy = ax.transAxes.inverse_xy_tup(xy0) |
|---|
| 749 | if location.lower() == 'top': |
|---|
| 750 | ymax = 1.0-lbloffset |
|---|
| 751 | ymin = xy[1]+peakoffset |
|---|
| 752 | valign = 'bottom' |
|---|
| 753 | ylbl = ymax+0.01 |
|---|
| 754 | elif location.lower() == 'bottom': |
|---|
| 755 | ymin = lbloffset |
|---|
| 756 | ymax = xy[1]-peakoffset |
|---|
| 757 | valign = 'top' |
|---|
| 758 | ylbl = ymin-0.01 |
|---|
| 759 | trans = blend_xy_sep_transform(ax.transData, ax.transAxes) |
|---|
| 760 | l = ax.axvline(x, ymin, ymax, color='black', **kwargs) |
|---|
| 761 | t = ax.text(x, ylbl ,label, verticalalignment=valign, |
|---|
| 762 | horizontalalignment='center', |
|---|
| 763 | rotation=rotate,transform = trans) |
|---|
| 764 | self.axes.set_autoscale_on(True) |
|---|
