| 1 | """ |
|---|
| 2 | ASAP plotting class based on matplotlib. |
|---|
| 3 | """ |
|---|
| 4 | |
|---|
| 5 | import sys |
|---|
| 6 | from re import match |
|---|
| 7 | |
|---|
| 8 | import matplotlib |
|---|
| 9 | |
|---|
| 10 | from matplotlib.figure import Figure, Text |
|---|
| 11 | from matplotlib.font_manager import FontProperties as FP |
|---|
| 12 | from matplotlib.numerix import sqrt |
|---|
| 13 | from matplotlib import rc, rcParams |
|---|
| 14 | from asap import rcParams as asaprcParams |
|---|
| 15 | from matplotlib.ticker import OldScalarFormatter |
|---|
| 16 | from matplotlib.ticker import NullLocator |
|---|
| 17 | from matplotlib.transforms import blend_xy_sep_transform |
|---|
| 18 | |
|---|
| 19 | if int(matplotlib.__version__.split(".")[1]) < 87: |
|---|
| 20 | print "Warning: matplotlib version < 0.87. This might cause errors. Please upgrade." |
|---|
| 21 | |
|---|
| 22 | #class MyFormatter(OldScalarFormatter): |
|---|
| 23 | # def __call__(self, x, pos=None): |
|---|
| 24 | # last = len(self.locs)-2 |
|---|
| 25 | # if pos==0: |
|---|
| 26 | # return '' |
|---|
| 27 | # else: return OldScalarFormatter.__call__(self, x, pos) |
|---|
| 28 | |
|---|
| 29 | class asaplotbase: |
|---|
| 30 | """ |
|---|
| 31 | ASAP plotting base class based on matplotlib. |
|---|
| 32 | """ |
|---|
| 33 | |
|---|
| 34 | def __init__(self, rows=1, cols=0, title='', size=(8,6), buffering=False): |
|---|
| 35 | """ |
|---|
| 36 | Create a new instance of the ASAPlot plotting class. |
|---|
| 37 | |
|---|
| 38 | If rows < 1 then a separate call to set_panels() is required to define |
|---|
| 39 | the panel layout; refer to the doctext for set_panels(). |
|---|
| 40 | """ |
|---|
| 41 | self.is_dead = False |
|---|
| 42 | self.figure = Figure(figsize=size, facecolor='#ddddee') |
|---|
| 43 | self.canvas = None |
|---|
| 44 | |
|---|
| 45 | self.set_title(title) |
|---|
| 46 | self.subplots = [] |
|---|
| 47 | if rows > 0: |
|---|
| 48 | self.set_panels(rows, cols) |
|---|
| 49 | |
|---|
| 50 | # Set matplotlib default colour sequence. |
|---|
| 51 | self.colormap = "green red black cyan magenta orange blue purple yellow pink".split() |
|---|
| 52 | |
|---|
| 53 | c = asaprcParams['plotter.colours'] |
|---|
| 54 | if isinstance(c,str) and len(c) > 0: |
|---|
| 55 | self.colormap = c.split() |
|---|
| 56 | |
|---|
| 57 | self.lsalias = {"line": [1,0], |
|---|
| 58 | "dashdot": [4,2,1,2], |
|---|
| 59 | "dashed" : [4,2,4,2], |
|---|
| 60 | "dotted" : [1,2], |
|---|
| 61 | "dashdotdot": [4,2,1,2,1,2], |
|---|
| 62 | "dashdashdot": [4,2,4,2,1,2] |
|---|
| 63 | } |
|---|
| 64 | |
|---|
| 65 | styles = "line dashed dotted dashdot".split() |
|---|
| 66 | c = asaprcParams['plotter.linestyles'] |
|---|
| 67 | if isinstance(c,str) and len(c) > 0: |
|---|
| 68 | styles = c.split() |
|---|
| 69 | s = [] |
|---|
| 70 | for ls in styles: |
|---|
| 71 | if self.lsalias.has_key(ls): |
|---|
| 72 | s.append(self.lsalias.get(ls)) |
|---|
| 73 | else: |
|---|
| 74 | s.append('-') |
|---|
| 75 | self.linestyles = s |
|---|
| 76 | |
|---|
| 77 | self.color = 0; |
|---|
| 78 | self.linestyle = 0; |
|---|
| 79 | self.attributes = {} |
|---|
| 80 | self.loc = 0 |
|---|
| 81 | |
|---|
| 82 | self.buffering = buffering |
|---|
| 83 | |
|---|
| 84 | def clear(self): |
|---|
| 85 | """ |
|---|
| 86 | Delete all lines from the plot. Line numbering will restart from 0. |
|---|
| 87 | """ |
|---|
| 88 | |
|---|
| 89 | for i in range(len(self.lines)): |
|---|
| 90 | self.delete(i) |
|---|
| 91 | self.axes.clear() |
|---|
| 92 | self.color = 0 |
|---|
| 93 | self.lines = [] |
|---|
| 94 | |
|---|
| 95 | def palette(self, color, colormap=None, linestyle=0, linestyles=None): |
|---|
| 96 | if colormap: |
|---|
| 97 | if isinstance(colormap,list): |
|---|
| 98 | self.colormap = colormap |
|---|
| 99 | elif isinstance(colormap,str): |
|---|
| 100 | self.colormap = colormap.split() |
|---|
| 101 | if 0 <= color < len(self.colormap): |
|---|
| 102 | self.color = color |
|---|
| 103 | if linestyles: |
|---|
| 104 | self.linestyles = [] |
|---|
| 105 | if isinstance(linestyles,list): |
|---|
| 106 | styles = linestyles |
|---|
| 107 | elif isinstance(linestyles,str): |
|---|
| 108 | styles = linestyles.split() |
|---|
| 109 | for ls in styles: |
|---|
| 110 | if self.lsalias.has_key(ls): |
|---|
| 111 | self.linestyles.append(self.lsalias.get(ls)) |
|---|
| 112 | else: |
|---|
| 113 | self.linestyles.append(self.lsalias.get('line')) |
|---|
| 114 | if 0 <= linestyle < len(self.linestyles): |
|---|
| 115 | self.linestyle = linestyle |
|---|
| 116 | |
|---|
| 117 | def delete(self, numbers=None): |
|---|
| 118 | """ |
|---|
| 119 | Delete the 0-relative line number, default is to delete the last. |
|---|
| 120 | The remaining lines are NOT renumbered. |
|---|
| 121 | """ |
|---|
| 122 | |
|---|
| 123 | if numbers is None: numbers = [len(self.lines)-1] |
|---|
| 124 | |
|---|
| 125 | if not hasattr(numbers, '__iter__'): |
|---|
| 126 | numbers = [numbers] |
|---|
| 127 | |
|---|
| 128 | for number in numbers: |
|---|
| 129 | if 0 <= number < len(self.lines): |
|---|
| 130 | if self.lines[number] is not None: |
|---|
| 131 | for line in self.lines[number]: |
|---|
| 132 | line.set_linestyle('None') |
|---|
| 133 | self.lines[number] = None |
|---|
| 134 | self.show() |
|---|
| 135 | |
|---|
| 136 | def get_line(self): |
|---|
| 137 | """ |
|---|
| 138 | Get the current default line attributes. |
|---|
| 139 | """ |
|---|
| 140 | return self.attributes |
|---|
| 141 | |
|---|
| 142 | |
|---|
| 143 | def hist(self, x=None, y=None, fmt=None, add=None): |
|---|
| 144 | """ |
|---|
| 145 | Plot a histogram. N.B. the x values refer to the start of the |
|---|
| 146 | histogram bin. |
|---|
| 147 | |
|---|
| 148 | fmt is the line style as in plot(). |
|---|
| 149 | """ |
|---|
| 150 | from matplotlib.numerix import array |
|---|
| 151 | from matplotlib.numerix.ma import MaskedArray |
|---|
| 152 | if x is None: |
|---|
| 153 | if y is None: return |
|---|
| 154 | x = range(len(y)) |
|---|
| 155 | |
|---|
| 156 | if len(x) != len(y): |
|---|
| 157 | return |
|---|
| 158 | l2 = 2*len(x) |
|---|
| 159 | x2 = range(l2) |
|---|
| 160 | y2 = range(12) |
|---|
| 161 | y2 = range(l2) |
|---|
| 162 | m2 = range(l2) |
|---|
| 163 | ymsk = y.raw_mask() |
|---|
| 164 | ydat = y.raw_data() |
|---|
| 165 | for i in range(l2): |
|---|
| 166 | x2[i] = x[i/2] |
|---|
| 167 | m2[i] = ymsk[i/2] |
|---|
| 168 | |
|---|
| 169 | y2[0] = 0.0 |
|---|
| 170 | for i in range(1,l2): |
|---|
| 171 | y2[i] = ydat[(i-1)/2] |
|---|
| 172 | |
|---|
| 173 | self.plot(x2, MaskedArray(y2,mask=m2,copy=0), fmt, add) |
|---|
| 174 | |
|---|
| 175 | |
|---|
| 176 | def hold(self, hold=True): |
|---|
| 177 | """ |
|---|
| 178 | Buffer graphics until subsequently released. |
|---|
| 179 | """ |
|---|
| 180 | self.buffering = hold |
|---|
| 181 | |
|---|
| 182 | |
|---|
| 183 | def legend(self, loc=None): |
|---|
| 184 | """ |
|---|
| 185 | Add a legend to the plot. |
|---|
| 186 | |
|---|
| 187 | Any other value for loc else disables the legend: |
|---|
| 188 | 1: upper right |
|---|
| 189 | 2: upper left |
|---|
| 190 | 3: lower left |
|---|
| 191 | 4: lower right |
|---|
| 192 | 5: right |
|---|
| 193 | 6: center left |
|---|
| 194 | 7: center right |
|---|
| 195 | 8: lower center |
|---|
| 196 | 9: upper center |
|---|
| 197 | 10: center |
|---|
| 198 | |
|---|
| 199 | """ |
|---|
| 200 | if isinstance(loc, int): |
|---|
| 201 | self.loc = None |
|---|
| 202 | if 0 <= loc <= 10: self.loc = loc |
|---|
| 203 | else: |
|---|
| 204 | self.loc = None |
|---|
| 205 | #self.show() |
|---|
| 206 | |
|---|
| 207 | |
|---|
| 208 | def plot(self, x=None, y=None, fmt=None, add=None): |
|---|
| 209 | """ |
|---|
| 210 | Plot the next line in the current frame using the current line |
|---|
| 211 | attributes. The ASAPlot graphics window will be mapped and raised. |
|---|
| 212 | |
|---|
| 213 | The argument list works a bit like the matlab plot() function. |
|---|
| 214 | """ |
|---|
| 215 | if x is None: |
|---|
| 216 | if y is None: return |
|---|
| 217 | x = range(len(y)) |
|---|
| 218 | |
|---|
| 219 | elif y is None: |
|---|
| 220 | y = x |
|---|
| 221 | x = range(len(y)) |
|---|
| 222 | if fmt is None: |
|---|
| 223 | line = self.axes.plot(x, y) |
|---|
| 224 | else: |
|---|
| 225 | line = self.axes.plot(x, y, fmt) |
|---|
| 226 | |
|---|
| 227 | # Add to an existing line? |
|---|
| 228 | i = None |
|---|
| 229 | if add is None or len(self.lines) < add < 0: |
|---|
| 230 | # Don't add. |
|---|
| 231 | self.lines.append(line) |
|---|
| 232 | i = len(self.lines) - 1 |
|---|
| 233 | else: |
|---|
| 234 | if add == 0: add = len(self.lines) |
|---|
| 235 | i = add - 1 |
|---|
| 236 | self.lines[i].extend(line) |
|---|
| 237 | |
|---|
| 238 | # Set/reset attributes for the line. |
|---|
| 239 | gotcolour = False |
|---|
| 240 | for k, v in self.attributes.iteritems(): |
|---|
| 241 | if k == 'color': gotcolour = True |
|---|
| 242 | for segment in self.lines[i]: |
|---|
| 243 | getattr(segment, "set_%s"%k)(v) |
|---|
| 244 | |
|---|
| 245 | if not gotcolour and len(self.colormap): |
|---|
| 246 | for segment in self.lines[i]: |
|---|
| 247 | getattr(segment, "set_color")(self.colormap[self.color]) |
|---|
| 248 | if len(self.colormap) == 1: |
|---|
| 249 | getattr(segment, "set_dashes")(self.linestyles[self.linestyle]) |
|---|
| 250 | |
|---|
| 251 | self.color += 1 |
|---|
| 252 | if self.color >= len(self.colormap): |
|---|
| 253 | self.color = 0 |
|---|
| 254 | |
|---|
| 255 | if len(self.colormap) == 1: |
|---|
| 256 | self.linestyle += 1 |
|---|
| 257 | if self.linestyle >= len(self.linestyles): |
|---|
| 258 | self.linestyle = 0 |
|---|
| 259 | |
|---|
| 260 | self.show() |
|---|
| 261 | |
|---|
| 262 | |
|---|
| 263 | def position(self): |
|---|
| 264 | """ |
|---|
| 265 | Use the mouse to get a position from a graph. |
|---|
| 266 | """ |
|---|
| 267 | |
|---|
| 268 | def position_disable(event): |
|---|
| 269 | self.register('button_press', None) |
|---|
| 270 | print '%.4f, %.4f' % (event.xdata, event.ydata) |
|---|
| 271 | |
|---|
| 272 | print 'Press any mouse button...' |
|---|
| 273 | self.register('button_press', position_disable) |
|---|
| 274 | |
|---|
| 275 | |
|---|
| 276 | def region(self): |
|---|
| 277 | """ |
|---|
| 278 | Use the mouse to get a rectangular region from a plot. |
|---|
| 279 | |
|---|
| 280 | The return value is [x0, y0, x1, y1] in world coordinates. |
|---|
| 281 | """ |
|---|
| 282 | |
|---|
| 283 | def region_start(event): |
|---|
| 284 | height = self.canvas.figure.bbox.height() |
|---|
| 285 | self.rect = {'fig': None, 'height': height, |
|---|
| 286 | 'x': event.x, 'y': height - event.y, |
|---|
| 287 | 'world': [event.xdata, event.ydata, |
|---|
| 288 | event.xdata, event.ydata]} |
|---|
| 289 | self.register('button_press', None) |
|---|
| 290 | self.register('motion_notify', region_draw) |
|---|
| 291 | self.register('button_release', region_disable) |
|---|
| 292 | |
|---|
| 293 | def region_draw(event): |
|---|
| 294 | self.canvas._tkcanvas.delete(self.rect['fig']) |
|---|
| 295 | self.rect['fig'] = self.canvas._tkcanvas.create_rectangle( |
|---|
| 296 | self.rect['x'], self.rect['y'], |
|---|
| 297 | event.x, self.rect['height'] - event.y) |
|---|
| 298 | |
|---|
| 299 | def region_disable(event): |
|---|
| 300 | self.register('motion_notify', None) |
|---|
| 301 | self.register('button_release', None) |
|---|
| 302 | |
|---|
| 303 | self.canvas._tkcanvas.delete(self.rect['fig']) |
|---|
| 304 | |
|---|
| 305 | self.rect['world'][2:4] = [event.xdata, event.ydata] |
|---|
| 306 | print '(%.2f, %.2f) (%.2f, %.2f)' % (self.rect['world'][0], |
|---|
| 307 | self.rect['world'][1], self.rect['world'][2], |
|---|
| 308 | self.rect['world'][3]) |
|---|
| 309 | |
|---|
| 310 | self.register('button_press', region_start) |
|---|
| 311 | |
|---|
| 312 | # This has to be modified to block and return the result (currently |
|---|
| 313 | # printed by region_disable) when that becomes possible in matplotlib. |
|---|
| 314 | |
|---|
| 315 | return [0.0, 0.0, 0.0, 0.0] |
|---|
| 316 | |
|---|
| 317 | |
|---|
| 318 | def register(self, type=None, func=None): |
|---|
| 319 | """ |
|---|
| 320 | Register, reregister, or deregister events of type 'button_press', |
|---|
| 321 | 'button_release', or 'motion_notify'. |
|---|
| 322 | |
|---|
| 323 | The specified callback function should have the following signature: |
|---|
| 324 | |
|---|
| 325 | def func(event) |
|---|
| 326 | |
|---|
| 327 | where event is an MplEvent instance containing the following data: |
|---|
| 328 | |
|---|
| 329 | name # Event name. |
|---|
| 330 | canvas # FigureCanvas instance generating the event. |
|---|
| 331 | x = None # x position - pixels from left of canvas. |
|---|
| 332 | y = None # y position - pixels from bottom of canvas. |
|---|
| 333 | button = None # Button pressed: None, 1, 2, 3. |
|---|
| 334 | key = None # Key pressed: None, chr(range(255)), shift, |
|---|
| 335 | win, or control |
|---|
| 336 | inaxes = None # Axes instance if cursor within axes. |
|---|
| 337 | xdata = None # x world coordinate. |
|---|
| 338 | ydata = None # y world coordinate. |
|---|
| 339 | |
|---|
| 340 | For example: |
|---|
| 341 | |
|---|
| 342 | def mouse_move(event): |
|---|
| 343 | print event.xdata, event.ydata |
|---|
| 344 | |
|---|
| 345 | a = asaplot() |
|---|
| 346 | a.register('motion_notify', mouse_move) |
|---|
| 347 | |
|---|
| 348 | If func is None, the event is deregistered. |
|---|
| 349 | |
|---|
| 350 | Note that in TkAgg keyboard button presses don't generate an event. |
|---|
| 351 | """ |
|---|
| 352 | |
|---|
| 353 | if not self.events.has_key(type): return |
|---|
| 354 | |
|---|
| 355 | if func is None: |
|---|
| 356 | if self.events[type] is not None: |
|---|
| 357 | # It's not clear that this does anything. |
|---|
| 358 | self.canvas.mpl_disconnect(self.events[type]) |
|---|
| 359 | self.events[type] = None |
|---|
| 360 | |
|---|
| 361 | # It seems to be necessary to return events to the toolbar. |
|---|
| 362 | if type == 'motion_notify': |
|---|
| 363 | self.canvas.mpl_connect(type + '_event', |
|---|
| 364 | self.figmgr.toolbar.mouse_move) |
|---|
| 365 | elif type == 'button_press': |
|---|
| 366 | self.canvas.mpl_connect(type + '_event', |
|---|
| 367 | self.figmgr.toolbar.press) |
|---|
| 368 | elif type == 'button_release': |
|---|
| 369 | self.canvas.mpl_connect(type + '_event', |
|---|
| 370 | self.figmgr.toolbar.release) |
|---|
| 371 | |
|---|
| 372 | else: |
|---|
| 373 | self.events[type] = self.canvas.mpl_connect(type + '_event', func) |
|---|
| 374 | |
|---|
| 375 | |
|---|
| 376 | def release(self): |
|---|
| 377 | """ |
|---|
| 378 | Release buffered graphics. |
|---|
| 379 | """ |
|---|
| 380 | self.buffering = False |
|---|
| 381 | self.show() |
|---|
| 382 | |
|---|
| 383 | |
|---|
| 384 | def save(self, fname=None, orientation=None, dpi=None, papertype=None): |
|---|
| 385 | """ |
|---|
| 386 | Save the plot to a file. |
|---|
| 387 | |
|---|
| 388 | fname is the name of the output file. The image format is determined |
|---|
| 389 | from the file suffix; 'png', 'ps', and 'eps' are recognized. If no |
|---|
| 390 | file name is specified 'yyyymmdd_hhmmss.png' is created in the current |
|---|
| 391 | directory. |
|---|
| 392 | """ |
|---|
| 393 | from asap import rcParams |
|---|
| 394 | if papertype is None: |
|---|
| 395 | papertype = rcParams['plotter.papertype'] |
|---|
| 396 | if fname is None: |
|---|
| 397 | from datetime import datetime |
|---|
| 398 | dstr = datetime.now().strftime('%Y%m%d_%H%M%S') |
|---|
| 399 | fname = 'asap'+dstr+'.png' |
|---|
| 400 | |
|---|
| 401 | d = ['png','.ps','eps'] |
|---|
| 402 | |
|---|
| 403 | from os.path import expandvars |
|---|
| 404 | fname = expandvars(fname) |
|---|
| 405 | |
|---|
| 406 | if fname[-3:].lower() in d: |
|---|
| 407 | try: |
|---|
| 408 | if fname[-3:].lower() == ".ps": |
|---|
| 409 | from matplotlib import __version__ as mv |
|---|
| 410 | w = self.figure.figwidth.get() |
|---|
| 411 | h = self.figure.figheight.get() |
|---|
| 412 | |
|---|
| 413 | if orientation is None: |
|---|
| 414 | # oriented |
|---|
| 415 | if w > h: |
|---|
| 416 | orientation = 'landscape' |
|---|
| 417 | else: |
|---|
| 418 | orientation = 'portrait' |
|---|
| 419 | from matplotlib.backends.backend_ps import papersize |
|---|
| 420 | pw,ph = papersize[papertype.lower()] |
|---|
| 421 | ds = None |
|---|
| 422 | if orientation == 'landscape': |
|---|
| 423 | ds = min(ph/w, pw/h) |
|---|
| 424 | else: |
|---|
| 425 | ds = min(pw/w, ph/h) |
|---|
| 426 | ow = ds * w |
|---|
| 427 | oh = ds * h |
|---|
| 428 | self.figure.set_figsize_inches((ow, oh)) |
|---|
| 429 | self.figure.savefig(fname, orientation=orientation, |
|---|
| 430 | papertype=papertype.lower()) |
|---|
| 431 | self.figure.set_figsize_inches((w, h)) |
|---|
| 432 | print 'Written file %s' % (fname) |
|---|
| 433 | else: |
|---|
| 434 | if dpi is None: |
|---|
| 435 | dpi =150 |
|---|
| 436 | self.figure.savefig(fname,dpi=dpi) |
|---|
| 437 | print 'Written file %s' % (fname) |
|---|
| 438 | except IOError, msg: |
|---|
| 439 | print 'Failed to save %s: Error msg was\n\n%s' % (fname, err) |
|---|
| 440 | return |
|---|
| 441 | else: |
|---|
| 442 | print "Invalid image type. Valid types are:" |
|---|
| 443 | print "'ps', 'eps', 'png'" |
|---|
| 444 | |
|---|
| 445 | |
|---|
| 446 | def set_axes(self, what=None, *args, **kwargs): |
|---|
| 447 | """ |
|---|
| 448 | Set attributes for the axes by calling the relevant Axes.set_*() |
|---|
| 449 | method. Colour translation is done as described in the doctext |
|---|
| 450 | for palette(). |
|---|
| 451 | """ |
|---|
| 452 | |
|---|
| 453 | if what is None: return |
|---|
| 454 | if what[-6:] == 'colour': what = what[:-6] + 'color' |
|---|
| 455 | |
|---|
| 456 | key = "colour" |
|---|
| 457 | if kwargs.has_key(key): |
|---|
| 458 | val = kwargs.pop(key) |
|---|
| 459 | kwargs["color"] = val |
|---|
| 460 | |
|---|
| 461 | getattr(self.axes, "set_%s"%what)(*args, **kwargs) |
|---|
| 462 | |
|---|
| 463 | self.show(hardrefresh=False) |
|---|
| 464 | |
|---|
| 465 | |
|---|
| 466 | def set_figure(self, what=None, *args, **kwargs): |
|---|
| 467 | """ |
|---|
| 468 | Set attributes for the figure by calling the relevant Figure.set_*() |
|---|
| 469 | method. Colour translation is done as described in the doctext |
|---|
| 470 | for palette(). |
|---|
| 471 | """ |
|---|
| 472 | |
|---|
| 473 | if what is None: return |
|---|
| 474 | if what[-6:] == 'colour': what = what[:-6] + 'color' |
|---|
| 475 | #if what[-5:] == 'color' and len(args): |
|---|
| 476 | # args = (get_colour(args[0]),) |
|---|
| 477 | |
|---|
| 478 | newargs = {} |
|---|
| 479 | for k, v in kwargs.iteritems(): |
|---|
| 480 | k = k.lower() |
|---|
| 481 | if k == 'colour': k = 'color' |
|---|
| 482 | newargs[k] = v |
|---|
| 483 | |
|---|
| 484 | getattr(self.figure, "set_%s"%what)(*args, **newargs) |
|---|
| 485 | self.show(hardrefresh=False) |
|---|
| 486 | |
|---|
| 487 | |
|---|
| 488 | def set_limits(self, xlim=None, ylim=None): |
|---|
| 489 | """ |
|---|
| 490 | Set x-, and y-limits for each subplot. |
|---|
| 491 | |
|---|
| 492 | xlim = [xmin, xmax] as in axes.set_xlim(). |
|---|
| 493 | ylim = [ymin, ymax] as in axes.set_ylim(). |
|---|
| 494 | """ |
|---|
| 495 | for s in self.subplots: |
|---|
| 496 | self.axes = s['axes'] |
|---|
| 497 | self.lines = s['lines'] |
|---|
| 498 | oldxlim = list(self.axes.get_xlim()) |
|---|
| 499 | oldylim = list(self.axes.get_ylim()) |
|---|
| 500 | if xlim is not None: |
|---|
| 501 | for i in range(len(xlim)): |
|---|
| 502 | if xlim[i] is not None: |
|---|
| 503 | oldxlim[i] = xlim[i] |
|---|
| 504 | if ylim is not None: |
|---|
| 505 | for i in range(len(ylim)): |
|---|
| 506 | if ylim[i] is not None: |
|---|
| 507 | oldylim[i] = ylim[i] |
|---|
| 508 | self.axes.set_xlim(oldxlim) |
|---|
| 509 | self.axes.set_ylim(oldylim) |
|---|
| 510 | return |
|---|
| 511 | |
|---|
| 512 | |
|---|
| 513 | def set_line(self, number=None, **kwargs): |
|---|
| 514 | """ |
|---|
| 515 | Set attributes for the specified line, or else the next line(s) |
|---|
| 516 | to be plotted. |
|---|
| 517 | |
|---|
| 518 | number is the 0-relative number of a line that has already been |
|---|
| 519 | plotted. If no such line exists, attributes are recorded and used |
|---|
| 520 | for the next line(s) to be plotted. |
|---|
| 521 | |
|---|
| 522 | Keyword arguments specify Line2D attributes, e.g. color='r'. Do |
|---|
| 523 | |
|---|
| 524 | import matplotlib |
|---|
| 525 | help(matplotlib.lines) |
|---|
| 526 | |
|---|
| 527 | The set_* methods of class Line2D define the attribute names and |
|---|
| 528 | values. For non-US usage, "colour" is recognized as synonymous with |
|---|
| 529 | "color". |
|---|
| 530 | |
|---|
| 531 | Set the value to None to delete an attribute. |
|---|
| 532 | |
|---|
| 533 | Colour translation is done as described in the doctext for palette(). |
|---|
| 534 | """ |
|---|
| 535 | |
|---|
| 536 | redraw = False |
|---|
| 537 | for k, v in kwargs.iteritems(): |
|---|
| 538 | k = k.lower() |
|---|
| 539 | if k == 'colour': k = 'color' |
|---|
| 540 | |
|---|
| 541 | if 0 <= number < len(self.lines): |
|---|
| 542 | if self.lines[number] is not None: |
|---|
| 543 | for line in self.lines[number]: |
|---|
| 544 | getattr(line, "set_%s"%k)(v) |
|---|
| 545 | redraw = True |
|---|
| 546 | else: |
|---|
| 547 | if v is None: |
|---|
| 548 | del self.attributes[k] |
|---|
| 549 | else: |
|---|
| 550 | self.attributes[k] = v |
|---|
| 551 | |
|---|
| 552 | if redraw: self.show(hardrefresh=False) |
|---|
| 553 | |
|---|
| 554 | |
|---|
| 555 | def set_panels(self, rows=1, cols=0, n=-1, nplots=-1, ganged=True): |
|---|
| 556 | """ |
|---|
| 557 | Set the panel layout. |
|---|
| 558 | |
|---|
| 559 | rows and cols, if cols != 0, specify the number of rows and columns in |
|---|
| 560 | a regular layout. (Indexing of these panels in matplotlib is row- |
|---|
| 561 | major, i.e. column varies fastest.) |
|---|
| 562 | |
|---|
| 563 | cols == 0 is interpreted as a retangular layout that accomodates |
|---|
| 564 | 'rows' panels, e.g. rows == 6, cols == 0 is equivalent to |
|---|
| 565 | rows == 2, cols == 3. |
|---|
| 566 | |
|---|
| 567 | 0 <= n < rows*cols is interpreted as the 0-relative panel number in |
|---|
| 568 | the configuration specified by rows and cols to be added to the |
|---|
| 569 | current figure as its next 0-relative panel number (i). This allows |
|---|
| 570 | non-regular panel layouts to be constructed via multiple calls. Any |
|---|
| 571 | other value of n clears the plot and produces a rectangular array of |
|---|
| 572 | empty panels. The number of these may be limited by nplots. |
|---|
| 573 | """ |
|---|
| 574 | if n < 0 and len(self.subplots): |
|---|
| 575 | self.figure.clear() |
|---|
| 576 | self.set_title() |
|---|
| 577 | |
|---|
| 578 | if rows < 1: rows = 1 |
|---|
| 579 | |
|---|
| 580 | if cols <= 0: |
|---|
| 581 | i = int(sqrt(rows)) |
|---|
| 582 | if i*i < rows: i += 1 |
|---|
| 583 | cols = i |
|---|
| 584 | |
|---|
| 585 | if i*(i-1) >= rows: i -= 1 |
|---|
| 586 | rows = i |
|---|
| 587 | |
|---|
| 588 | if 0 <= n < rows*cols: |
|---|
| 589 | i = len(self.subplots) |
|---|
| 590 | self.subplots.append({}) |
|---|
| 591 | |
|---|
| 592 | self.subplots[i]['axes'] = self.figure.add_subplot(rows, |
|---|
| 593 | cols, n+1) |
|---|
| 594 | self.subplots[i]['lines'] = [] |
|---|
| 595 | |
|---|
| 596 | if i == 0: self.subplot(0) |
|---|
| 597 | |
|---|
| 598 | self.rows = 0 |
|---|
| 599 | self.cols = 0 |
|---|
| 600 | |
|---|
| 601 | else: |
|---|
| 602 | self.subplots = [] |
|---|
| 603 | |
|---|
| 604 | if nplots < 1 or rows*cols < nplots: |
|---|
| 605 | nplots = rows*cols |
|---|
| 606 | if ganged: |
|---|
| 607 | hsp,wsp = None,None |
|---|
| 608 | if rows > 1: hsp = 0.0001 |
|---|
| 609 | if cols > 1: wsp = 0.0001 |
|---|
| 610 | self.figure.subplots_adjust(wspace=wsp,hspace=hsp) |
|---|
| 611 | for i in range(nplots): |
|---|
| 612 | self.subplots.append({}) |
|---|
| 613 | self.subplots[i]['lines'] = [] |
|---|
| 614 | if not ganged: |
|---|
| 615 | self.subplots[i]['axes'] = self.figure.add_subplot(rows, |
|---|
| 616 | cols, i+1) |
|---|
| 617 | self.subplots[i]['axes'].xaxis.set_major_formatter(OldScalarFormatter()) |
|---|
| 618 | else: |
|---|
| 619 | if i == 0: |
|---|
| 620 | self.subplots[i]['axes'] = self.figure.add_subplot(rows, |
|---|
| 621 | cols, i+1) |
|---|
| 622 | self.subplots[i]['axes'].xaxis.set_major_formatter(OldScalarFormatter()) |
|---|
| 623 | else: |
|---|
| 624 | self.subplots[i]['axes'] = self.figure.add_subplot(rows, |
|---|
| 625 | cols, i+1, |
|---|
| 626 | sharex=self.subplots[0]['axes'], |
|---|
| 627 | sharey=self.subplots[0]['axes']) |
|---|
| 628 | |
|---|
| 629 | # Suppress tick labelling for interior subplots. |
|---|
| 630 | if i <= (rows-1)*cols - 1: |
|---|
| 631 | if i+cols < nplots: |
|---|
| 632 | # Suppress x-labels for frames width |
|---|
| 633 | # adjacent frames |
|---|
| 634 | for tick in self.subplots[i]['axes'].xaxis.majorTicks: |
|---|
| 635 | tick.label1On = False |
|---|
| 636 | self.subplots[i]['axes'].xaxis.label.set_visible(False) |
|---|
| 637 | if i%cols: |
|---|
| 638 | # Suppress y-labels for frames not in the left column. |
|---|
| 639 | for tick in self.subplots[i]['axes'].yaxis.majorTicks: |
|---|
| 640 | tick.label1On = False |
|---|
| 641 | self.subplots[i]['axes'].yaxis.label.set_visible(False) |
|---|
| 642 | # disable the first tick of [1:ncol-1] of the last row |
|---|
| 643 | #if i+1 < nplots: |
|---|
| 644 | # self.subplots[i]['axes'].xaxis.majorTicks[0].label1On = False |
|---|
| 645 | self.rows = rows |
|---|
| 646 | self.cols = cols |
|---|
| 647 | self.subplot(0) |
|---|
| 648 | |
|---|
| 649 | def tidy(self): |
|---|
| 650 | # this needs to be exceuted after the first "refresh" |
|---|
| 651 | nplots = len(self.subplots) |
|---|
| 652 | if nplots == 1: return |
|---|
| 653 | for i in xrange(nplots): |
|---|
| 654 | ax = self.subplots[i]['axes'] |
|---|
| 655 | if i%self.cols: |
|---|
| 656 | ax.xaxis.majorTicks[0].label1On = False |
|---|
| 657 | else: |
|---|
| 658 | if i != 0: |
|---|
| 659 | ax.yaxis.majorTicks[-1].label1On = False |
|---|
| 660 | |
|---|
| 661 | |
|---|
| 662 | def set_title(self, title=None): |
|---|
| 663 | """ |
|---|
| 664 | Set the title of the plot window. Use the previous title if title is |
|---|
| 665 | omitted. |
|---|
| 666 | """ |
|---|
| 667 | if title is not None: |
|---|
| 668 | self.title = title |
|---|
| 669 | |
|---|
| 670 | self.figure.text(0.5, 0.95, self.title, horizontalalignment='center') |
|---|
| 671 | |
|---|
| 672 | |
|---|
| 673 | def show(self, hardrefresh=True): |
|---|
| 674 | """ |
|---|
| 675 | Show graphics dependent on the current buffering state. |
|---|
| 676 | """ |
|---|
| 677 | if not hardrefresh: return |
|---|
| 678 | if not self.buffering: |
|---|
| 679 | if self.loc is not None: |
|---|
| 680 | for sp in self.subplots: |
|---|
| 681 | lines = [] |
|---|
| 682 | labels = [] |
|---|
| 683 | i = 0 |
|---|
| 684 | for line in sp['lines']: |
|---|
| 685 | i += 1 |
|---|
| 686 | if line is not None: |
|---|
| 687 | lines.append(line[0]) |
|---|
| 688 | lbl = line[0].get_label() |
|---|
| 689 | if lbl == '': |
|---|
| 690 | lbl = str(i) |
|---|
| 691 | labels.append(lbl) |
|---|
| 692 | |
|---|
| 693 | if len(lines): |
|---|
| 694 | fp = FP(size=rcParams['legend.fontsize']) |
|---|
| 695 | fsz = fp.get_size_in_points() - len(lines) |
|---|
| 696 | fp.set_size(max(fsz,6)) |
|---|
| 697 | sp['axes'].legend(tuple(lines), tuple(labels), |
|---|
| 698 | self.loc, prop=fp) |
|---|
| 699 | else: |
|---|
| 700 | sp['axes'].legend((' ')) |
|---|
| 701 | |
|---|
| 702 | from matplotlib.artist import setp |
|---|
| 703 | fp = FP(size=rcParams['xtick.labelsize']) |
|---|
| 704 | xts = fp.get_size_in_points()- (self.cols)/2 |
|---|
| 705 | fp = FP(size=rcParams['ytick.labelsize']) |
|---|
| 706 | yts = fp.get_size_in_points() - (self.rows)/2 |
|---|
| 707 | for sp in self.subplots: |
|---|
| 708 | ax = sp['axes'] |
|---|
| 709 | s = ax.title.get_size() |
|---|
| 710 | tsize = s-(self.cols+self.rows) |
|---|
| 711 | ax.title.set_size(tsize) |
|---|
| 712 | fp = FP(size=rcParams['axes.labelsize']) |
|---|
| 713 | setp(ax.get_xticklabels(), fontsize=xts) |
|---|
| 714 | setp(ax.get_yticklabels(), fontsize=yts) |
|---|
| 715 | origx = fp.get_size_in_points() |
|---|
| 716 | origy = origx |
|---|
| 717 | off = 0 |
|---|
| 718 | if self.cols > 1: off = self.cols |
|---|
| 719 | xfsize = origx-off |
|---|
| 720 | ax.xaxis.label.set_size(xfsize) |
|---|
| 721 | off = 0 |
|---|
| 722 | if self.rows > 1: off = self.rows |
|---|
| 723 | yfsize = origy-off |
|---|
| 724 | ax.yaxis.label.set_size(yfsize) |
|---|
| 725 | |
|---|
| 726 | def subplot(self, i=None, inc=None): |
|---|
| 727 | """ |
|---|
| 728 | Set the subplot to the 0-relative panel number as defined by one or |
|---|
| 729 | more invokations of set_panels(). |
|---|
| 730 | """ |
|---|
| 731 | l = len(self.subplots) |
|---|
| 732 | if l: |
|---|
| 733 | if i is not None: |
|---|
| 734 | self.i = i |
|---|
| 735 | |
|---|
| 736 | if inc is not None: |
|---|
| 737 | self.i += inc |
|---|
| 738 | |
|---|
| 739 | self.i %= l |
|---|
| 740 | self.axes = self.subplots[self.i]['axes'] |
|---|
| 741 | self.lines = self.subplots[self.i]['lines'] |
|---|
| 742 | |
|---|
| 743 | def text(self, *args, **kwargs): |
|---|
| 744 | """ |
|---|
| 745 | Add text to the figure. |
|---|
| 746 | """ |
|---|
| 747 | self.figure.text(*args, **kwargs) |
|---|
| 748 | self.show() |
|---|
| 749 | |
|---|
| 750 | def vline_with_label(self, x, y, label, |
|---|
| 751 | location='bottom', rotate=0.0, **kwargs): |
|---|
| 752 | """ |
|---|
| 753 | Plot a vertical line with label. |
|---|
| 754 | It takes "world" values fo x and y. |
|---|
| 755 | """ |
|---|
| 756 | ax = self.axes |
|---|
| 757 | # need this to suppress autoscaling during this function |
|---|
| 758 | self.axes.set_autoscale_on(False) |
|---|
| 759 | ymin = 0.0 |
|---|
| 760 | ymax = 1.0 |
|---|
| 761 | valign = 'center' |
|---|
| 762 | if location.lower() == 'top': |
|---|
| 763 | y = max(0.0, y) |
|---|
| 764 | elif location.lower() == 'bottom': |
|---|
| 765 | y = min(0.0, y) |
|---|
| 766 | lbloffset = 0.06 |
|---|
| 767 | # a rough estimate for the bb of the text |
|---|
| 768 | if rotate > 0.0: lbloffset = 0.03*len(label) |
|---|
| 769 | peakoffset = 0.01 |
|---|
| 770 | xy0 = ax.transData.xy_tup((x,y)) |
|---|
| 771 | # get relative coords |
|---|
| 772 | xy = ax.transAxes.inverse_xy_tup(xy0) |
|---|
| 773 | if location.lower() == 'top': |
|---|
| 774 | ymax = 1.0-lbloffset |
|---|
| 775 | ymin = xy[1]+peakoffset |
|---|
| 776 | valign = 'bottom' |
|---|
| 777 | ylbl = ymax+0.01 |
|---|
| 778 | elif location.lower() == 'bottom': |
|---|
| 779 | ymin = lbloffset |
|---|
| 780 | ymax = xy[1]-peakoffset |
|---|
| 781 | valign = 'top' |
|---|
| 782 | ylbl = ymin-0.01 |
|---|
| 783 | trans = blend_xy_sep_transform(ax.transData, ax.transAxes) |
|---|
| 784 | l = ax.axvline(x, ymin, ymax, color='black', **kwargs) |
|---|
| 785 | t = ax.text(x, ylbl ,label, verticalalignment=valign, |
|---|
| 786 | horizontalalignment='center', |
|---|
| 787 | rotation=rotate,transform = trans) |
|---|
| 788 | self.axes.set_autoscale_on(True) |
|---|
