Skip to content
Navigation Menu
{{ message }}
-
-
Notifications
You must be signed in to change notification settings - Fork 8.4k
Expand file tree
/
Copy pathlines.py
More file actions
1730 lines (1447 loc) · 57.5 KB
/
Copy pathlines.py
File metadata and controls
1730 lines (1447 loc) · 57.5 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
"""
2D lines with support for a variety of line styles, markers, colors, etc.
"""
import copy
from numbers import Integral, Number, Real
import logging
import numpy as np
import matplotlib as mpl
from . import _api, cbook, colors as mcolors, _docstring
from .artist import Artist, allow_rasterization
from .cbook import (
_to_unmasked_float_array, ls_mapper, ls_mapper_r, STEP_LOOKUP_MAP)
from .markers import MarkerStyle
from .path import Path
from .transforms import Bbox, BboxTransformTo, TransformedPath
from ._enums import JoinStyle, CapStyle
# Imported here for backward compatibility, even though they don't
# really belong.
from . import _path
from .markers import ( # noqa
CARETLEFT, CARETRIGHT, CARETUP, CARETDOWN,
CARETLEFTBASE, CARETRIGHTBASE, CARETUPBASE, CARETDOWNBASE,
TICKLEFT, TICKRIGHT, TICKUP, TICKDOWN)
_log = logging.getLogger(__name__)
def _get_dash_pattern(style):
"""Convert linestyle to dash pattern."""
# go from short hand -> full strings
if isinstance(style, str):
style = ls_mapper.get(style, style)
# un-dashed styles
if style in ['solid', 'None', 'none', '', ' ']:
offset = 0
dashes = None
# dashed styles
elif style in ['dashed', 'dashdot', 'dotted']:
offset = 0
dashes = tuple(mpl.rcParams[f'lines.{style}_pattern'])
#
elif isinstance(style, tuple):
offset, dashes = style
if offset is None:
raise ValueError(f'Unrecognized linestyle: {style!r}')
else:
raise ValueError(f'Unrecognized linestyle: {style!r}')
# normalize offset to be positive and shorter than the dash cycle
if dashes is not None:
dsum = sum(dashes)
if dsum:
offset %= dsum
return offset, dashes
def _get_dash_patterns(styles):
"""Convert linestyle or sequence of linestyles to list of dash patterns."""
try:
patterns = [_get_dash_pattern(styles)]
except ValueError:
try:
patterns = [_get_dash_pattern(x) for x in styles]
except ValueError as err:
emsg = f'Do not know how to convert {styles!r} to dashes'
raise ValueError(emsg) from err
return patterns
def _get_inverse_dash_pattern(offset, dashes):
"""Return the inverse of the given dash pattern, for filling the gaps."""
# Define the inverse pattern by moving the last gap to the start of the
# sequence.
gaps = dashes[-1:] + dashes[:-1]
# Set the offset so that this new first segment is skipped
# (see backend_bases.GraphicsContextBase.set_dashes for offset definition).
offset_gaps = offset + dashes[-1]
return offset_gaps, gaps
def _scale_dashes(offset, dashes, lw):
if not mpl.rcParams['lines.scale_dashes']:
return offset, dashes
scaled_offset = offset * lw
scaled_dashes = ([x * lw if x is not None else None for x in dashes]
if dashes is not None else None)
return scaled_offset, scaled_dashes
def segment_hits(cx, cy, x, y, radius):
"""
Return the indices of the segments in the polyline with coordinates (*cx*,
*cy*) that are within a distance *radius* of the point (*x*, *y*).
"""
# Process single points specially
if len(x) <= 1:
res, = np.nonzero((cx - x) ** 2 + (cy - y) ** 2 <= radius ** 2)
return res
# We need to lop the last element off a lot.
xr, yr = x[:-1], y[:-1]
# Only look at line segments whose nearest point to C on the line
# lies within the segment.
dx, dy = x[1:] - xr, y[1:] - yr
Lnorm_sq = dx ** 2 + dy ** 2 # Possibly want to eliminate Lnorm==0
u = ((cx - xr) * dx + (cy - yr) * dy) / Lnorm_sq
candidates = (u >= 0) & (u <= 1)
# Note that there is a little area near one side of each point
# which will be near neither segment, and another which will
# be near both, depending on the angle of the lines. The
# following radius test eliminates these ambiguities.
point_hits = (cx - x) ** 2 + (cy - y) ** 2 <= radius ** 2
candidates = candidates & ~(point_hits[:-1] | point_hits[1:])
# For those candidates which remain, determine how far they lie away
# from the line.
px, py = xr + u * dx, yr + u * dy
line_hits = (cx - px) ** 2 + (cy - py) ** 2 <= radius ** 2
line_hits = line_hits & candidates
points, = point_hits.ravel().nonzero()
lines, = line_hits.ravel().nonzero()
return np.concatenate((points, lines))
def _mark_every_path(markevery, tpath, affine, ax):
"""
Helper function that sorts out how to deal the input
`markevery` and returns the points where markers should be drawn.
Takes in the `markevery` value and the line path and returns the
sub-sampled path.
"""
# pull out the two bits of data we want from the path
codes, verts = tpath.codes, tpath.vertices
def _slice_or_none(in_v, slc):
"""Helper function to cope with `codes` being an ndarray or `None`."""
if in_v is None:
return None
return in_v[slc]
# if just an int, assume starting at 0 and make a tuple
if isinstance(markevery, Integral):
markevery = (0, markevery)
# if just a float, assume starting at 0.0 and make a tuple
elif isinstance(markevery, Real):
markevery = (0.0, markevery)
if isinstance(markevery, tuple):
if len(markevery) != 2:
raise ValueError('`markevery` is a tuple but its len is not 2; '
f'markevery={markevery}')
start, step = markevery
# if step is an int, old behavior
if isinstance(step, Integral):
# tuple of 2 int is for backwards compatibility,
if not isinstance(start, Integral):
raise ValueError(
'`markevery` is a tuple with len 2 and second element is '
'an int, but the first element is not an int; '
f'markevery={markevery}')
# just return, we are done here
return Path(verts[slice(start, None, step)],
_slice_or_none(codes, slice(start, None, step)))
elif isinstance(step, Real):
if not isinstance(start, Real):
raise ValueError(
'`markevery` is a tuple with len 2 and second element is '
'a float, but the first element is not a float or an int; '
f'markevery={markevery}')
if ax is None:
raise ValueError(
"markevery is specified relative to the Axes size, but "
"the line does not have an Axes as parent")
# calc cumulative distance along path (in display coords):
fin = np.isfinite(verts).all(axis=1)
fverts = verts[fin]
disp_coords = affine.transform(fverts)
delta = np.empty((len(disp_coords), 2))
delta[0, :] = 0
delta[1:, :] = disp_coords[1:, :] - disp_coords[:-1, :]
delta = np.hypot(*delta.T).cumsum()
# calc distance between markers along path based on the Axes
# bounding box diagonal being a distance of unity:
(x0, y0), (x1, y1) = ax.transAxes.transform([[0, 0], [1, 1]])
scale = np.hypot(x1 - x0, y1 - y0)
marker_delta = np.arange(start * scale, delta[-1], step * scale)
# find closest actual data point that is closest to
# the theoretical distance along the path:
inds = np.abs(delta[np.newaxis, :] - marker_delta[:, np.newaxis])
inds = inds.argmin(axis=1)
inds = np.unique(inds)
# return, we are done here
return Path(fverts[inds], _slice_or_none(codes, inds))
else:
raise ValueError(
f"markevery={markevery!r} is a tuple with len 2, but its "
f"second element is not an int or a float")
elif isinstance(markevery, slice):
# mazol tov, it's already a slice, just return
return Path(verts[markevery], _slice_or_none(codes, markevery))
elif np.iterable(markevery):
# fancy indexing
try:
return Path(verts[markevery], _slice_or_none(codes, markevery))
except (ValueError, IndexError) as err:
raise ValueError(
f"markevery={markevery!r} is iterable but not a valid numpy "
f"fancy index") from err
else:
raise ValueError(f"markevery={markevery!r} is not a recognized value")
@_docstring.interpd
@_api.define_aliases({
"antialiased": ["aa"],
"color": ["c"],
"drawstyle": ["ds"],
"linestyle": ["ls"],
"linewidth": ["lw"],
"markeredgecolor": ["mec"],
"markeredgewidth": ["mew"],
"markerfacecolor": ["mfc"],
"markerfacecoloralt": ["mfcalt"],
"markersize": ["ms"],
})
class Line2D(Artist):
"""
A line - the line can have both a solid linestyle connecting all
the vertices, and a marker at each vertex. Additionally, the
drawing of the solid line is influenced by the drawstyle, e.g., one
can create "stepped" lines in various styles.
"""
lineStyles = _lineStyles = { # hidden names deprecated
'-': '_draw_solid',
'--': '_draw_dashed',
'-.': '_draw_dash_dot',
':': '_draw_dotted',
'None': '_draw_nothing',
' ': '_draw_nothing',
'': '_draw_nothing',
}
_drawStyles_l = {
'default': '_draw_lines',
'steps-mid': '_draw_steps_mid',
'steps-pre': '_draw_steps_pre',
'steps-post': '_draw_steps_post',
}
_drawStyles_s = {
'steps': '_draw_steps_pre',
}
# drawStyles should now be deprecated.
drawStyles = {**_drawStyles_l, **_drawStyles_s}
# Need a list ordered with long names first:
drawStyleKeys = [*_drawStyles_l, *_drawStyles_s]
# Referenced here to maintain API. These are defined in
# MarkerStyle
markers = MarkerStyle.markers
filled_markers = MarkerStyle.filled_markers
fillStyles = MarkerStyle.fillstyles
zorder = 2
_subslice_optim_min_size = 1000
def __str__(self):
if self._label != "":
return f"Line2D({self._label})"
elif self._x is None:
return "Line2D()"
elif len(self._x) > 3:
return "Line2D(({:g},{:g}),({:g},{:g}),...,({:g},{:g}))".format(
self._x[0], self._y[0],
self._x[1], self._y[1],
self._x[-1], self._y[-1])
else:
return "Line2D(%s)" % ",".join(
map("({:g},{:g})".format, self._x, self._y))
def __init__(self, xdata, ydata, *,
linewidth=None, # all Nones default to rc
linestyle=None,
color=None,
gapcolor=None,
marker=None,
markersize=None,
markeredgewidth=None,
markeredgecolor=None,
markerfacecolor=None,
markerfacecoloralt='none',
fillstyle=None,
antialiased=None,
dash_capstyle=None,
solid_capstyle=None,
dash_joinstyle=None,
solid_joinstyle=None,
pickradius=5,
drawstyle=None,
markevery=None,
**kwargs
):
"""
Create a `.Line2D` instance with *x* and *y* data in sequences of
*xdata*, *ydata*.
Additional keyword arguments are `.Line2D` properties:
%(Line2D:kwdoc)s
See :meth:`set_linestyle` for a description of the line styles,
:meth:`set_marker` for a description of the markers, and
:meth:`set_drawstyle` for a description of the draw styles.
"""
super().__init__()
# Convert sequences to NumPy arrays.
if not np.iterable(xdata):
raise RuntimeError('xdata must be a sequence')
if not np.iterable(ydata):
raise RuntimeError('ydata must be a sequence')
linewidth = mpl._val_or_rc(linewidth, 'lines.linewidth')
linestyle = mpl._val_or_rc(linestyle, 'lines.linestyle')
marker = mpl._val_or_rc(marker, 'lines.marker')
color = mpl._val_or_rc(color, 'lines.color')
markersize = mpl._val_or_rc(markersize, 'lines.markersize')
antialiased = mpl._val_or_rc(antialiased, 'lines.antialiased')
dash_capstyle = mpl._val_or_rc(dash_capstyle, 'lines.dash_capstyle')
dash_joinstyle = mpl._val_or_rc(dash_joinstyle, 'lines.dash_joinstyle')
solid_capstyle = mpl._val_or_rc(solid_capstyle, 'lines.solid_capstyle')
solid_joinstyle = mpl._val_or_rc(solid_joinstyle, 'lines.solid_joinstyle')
if drawstyle is None:
drawstyle = 'default'
self._dashcapstyle = None
self._dashjoinstyle = None
self._solidjoinstyle = None
self._solidcapstyle = None
self.set_dash_capstyle(dash_capstyle)
self.set_dash_joinstyle(dash_joinstyle)
self.set_solid_capstyle(solid_capstyle)
self.set_solid_joinstyle(solid_joinstyle)
self._linestyles = None
self._drawstyle = None
self._linewidth = linewidth
self._unscaled_dash_pattern = (0, None) # offset, dash
self._dash_pattern = (0, None) # offset, dash (scaled by linewidth)
self.set_linewidth(linewidth)
self.set_linestyle(linestyle)
self.set_drawstyle(drawstyle)
self._color = None
self.set_color(color)
if marker is None:
marker = 'none' # Default.
if not isinstance(marker, MarkerStyle):
self._marker = MarkerStyle(marker, fillstyle)
else:
self._marker = marker
self._gapcolor = None
self.set_gapcolor(gapcolor)
self._markevery = None
self._markersize = None
self._antialiased = None
self.set_markevery(markevery)
self.set_antialiased(antialiased)
self.set_markersize(markersize)
self._markeredgecolor = None
self._markeredgewidth = None
self._markerfacecolor = None
self._markerfacecoloralt = None
self.set_markerfacecolor(markerfacecolor) # Normalizes None to rc.
self.set_markerfacecoloralt(markerfacecoloralt)
self.set_markeredgecolor(markeredgecolor) # Normalizes None to rc.
self.set_markeredgewidth(markeredgewidth)
# update kwargs before updating data to give the caller a
# chance to init axes (and hence unit support)
self._internal_update(kwargs)
self.pickradius = pickradius
self.ind_offset = 0
if (isinstance(self._picker, Number) and
not isinstance(self._picker, bool)):
self._pickradius = self._picker
self._xorig = np.asarray([])
self._yorig = np.asarray([])
self._invalidx = True
self._invalidy = True
self._x = None
self._y = None
self._xy = None
self._path = None
self._transformed_path = None
self._subslice = False
self._x_filled = None # used in subslicing; only x is needed
self.set_data(xdata, ydata)
def contains(self, mouseevent):
"""
Test whether *mouseevent* occurred on the line.
An event is deemed to have occurred "on" the line if it is less
than ``self.pickradius`` (default: 5 points) away from it. Use
`~.Line2D.get_pickradius` or `~.Line2D.set_pickradius` to get or set
the pick radius.
Parameters
----------
mouseevent : `~matplotlib.backend_bases.MouseEvent`
Returns
-------
contains : bool
Whether any values are within the radius.
details : dict
A dictionary ``{'ind': pointlist}``, where *pointlist* is a
list of points of the line that are within the pickradius around
the event position.
TODO: sort returned indices by distance
"""
if self._different_canvas(mouseevent):
return False, {}
# Make sure we have data to plot
if self._invalidy or self._invalidx:
self.recache()
if len(self._xy) == 0:
return False, {}
# Convert points to pixels
transformed_path = self._get_transformed_path()
path, affine = transformed_path.get_transformed_path_and_affine()
path = affine.transform_path(path)
xy = path.vertices
xt = xy[:, 0]
yt = xy[:, 1]
# Convert pick radius from points to pixels
fig = self.get_figure(root=True)
if fig is None:
_log.warning('no figure set when check if mouse is on line')
pixels = self._pickradius
else:
pixels = fig.dpi / 72. * self._pickradius
# The math involved in checking for containment (here and inside of
# segment_hits) assumes that it is OK to overflow, so temporarily set
# the error flags accordingly.
with np.errstate(all='ignore'):
# Check for collision
if self._linestyle in ['None', None]:
# If no line, return the nearby point(s)
ind, = np.nonzero(
(xt - mouseevent.x) ** 2 + (yt - mouseevent.y) ** 2
<= pixels ** 2)
else:
# If line, return the nearby segment(s)
ind = segment_hits(mouseevent.x, mouseevent.y, xt, yt, pixels)
if self._drawstyle.startswith("steps"):
ind //= 2
ind += self.ind_offset
# Return the point(s) within radius
return len(ind) > 0, dict(ind=ind)
def get_pickradius(self):
"""
Return the pick radius used for containment tests.
See `.contains` for more details.
"""
return self._pickradius
def set_pickradius(self, pickradius):
"""
Set the pick radius used for containment tests.
See `.contains` for more details.
Parameters
----------
pickradius : float
Pick radius, in points.
"""
if not isinstance(pickradius, Real) or pickradius < 0:
raise ValueError("pick radius should be a distance")
self._pickradius = pickradius
pickradius = property(get_pickradius, set_pickradius)
def get_fillstyle(self):
"""
Return the marker fill style.
See also `~.Line2D.set_fillstyle`.
"""
return self._marker.get_fillstyle()
def set_fillstyle(self, fs):
"""
Set the marker fill style.
Parameters
----------
fs : {'full', 'left', 'right', 'bottom', 'top', 'none'}
Possible values:
- 'full': Fill the whole marker with the *markerfacecolor*.
- 'left', 'right', 'bottom', 'top': Fill the marker half at
the given side with the *markerfacecolor*. The other
half of the marker is filled with *markerfacecoloralt*.
- 'none': No filling.
For examples see :ref:`marker_fill_styles`.
"""
self.set_marker(MarkerStyle(self._marker.get_marker(), fs))
self.stale = True
def set_markevery(self, every):
"""
Set the markevery property to subsample the plot when using markers.
e.g., if ``every=5``, every 5-th marker will be plotted.
Parameters
----------
every : None or int or (int, int) or slice or list[int] or float or \
(float, float) or list[bool]
Which markers to plot.
- ``every=None``: every point will be plotted.
- ``every=N``: every N-th marker will be plotted starting with
marker 0.
- ``every=(start, N)``: every N-th marker, starting at index
*start*, will be plotted.
- ``every=slice(start, end, N)``: every N-th marker, starting at
index *start*, up to but not including index *end*, will be
plotted.
- ``every=[i, j, m, ...]``: only markers at the given indices
will be plotted.
- ``every=[True, False, True, ...]``: only positions that are True
will be plotted. The list must have the same length as the data
points.
- ``every=0.1``, (i.e. a float): markers will be spaced at
approximately equal visual distances along the line; the distance
along the line between markers is determined by multiplying the
display-coordinate distance of the Axes bounding-box diagonal
by the value of *every*.
- ``every=(0.5, 0.1)`` (i.e. a length-2 tuple of float): similar
to ``every=0.1`` but the first marker will be offset along the
line by 0.5 multiplied by the
display-coordinate-diagonal-distance along the line.
For examples see
:doc:`/gallery/lines_bars_and_markers/markevery_demo`.
Notes
-----
Setting *markevery* will still only draw markers at actual data points.
While the float argument form aims for uniform visual spacing, it has
to coerce from the ideal spacing to the nearest available data point.
Depending on the number and distribution of data points, the result
may still not look evenly spaced.
When using a start offset to specify the first marker, the offset will
be from the first data point which may be different from the first
the visible data point if the plot is zoomed in.
If zooming in on a plot when using float arguments then the actual
data points that have markers will change because the distance between
markers is always determined from the display-coordinates
axes-bounding-box-diagonal regardless of the actual axes data limits.
"""
self._markevery = every
self.stale = True
def get_markevery(self):
"""
Return the markevery setting for marker subsampling.
See also `~.Line2D.set_markevery`.
"""
return self._markevery
def set_picker(self, p):
"""
Set the event picker details for the line.
Parameters
----------
p : float or callable[[Artist, Event], tuple[bool, dict]]
If a float, it is used as the pick radius in points.
"""
if not callable(p):
self.set_pickradius(p)
self._picker = p
def get_bbox(self):
"""Get the bounding box of this line."""
bbox = Bbox([[0, 0], [0, 0]])
bbox.update_from_data_xy(self.get_xydata())
return bbox
def get_window_extent(self, renderer=None):
bbox = Bbox([[0, 0], [0, 0]])
trans_data_to_xy = self.get_transform().transform
bbox.update_from_data_xy(trans_data_to_xy(self.get_xydata()),
ignore=True)
# correct for marker size, if any
if self._marker:
ms = (self._markersize / 72.0 * self.get_figure(root=True).dpi) * 0.5
bbox = bbox.padded(ms)
return bbox
def set_data(self, *args):
"""
Set the x and y data.
Parameters
----------
*args : (2, N) array or two 1D arrays
See Also
--------
set_xdata
set_ydata
"""
if len(args) == 1:
(x, y), = args
else:
x, y = args
self.set_xdata(x)
self.set_ydata(y)
def recache_always(self):
self.recache(always=True)
def recache(self, always=False):
if always or self._invalidx:
xconv = self.convert_xunits(self._xorig)
x = _to_unmasked_float_array(xconv).ravel()
else:
x = self._x
if always or self._invalidy:
yconv = self.convert_yunits(self._yorig)
y = _to_unmasked_float_array(yconv).ravel()
else:
y = self._y
self._xy = np.column_stack(np.broadcast_arrays(x, y)).astype(float)
self._x = self._xy[:, 0] # views of the x and y data
self._y = self._xy[:, 1]
self._subslice = False
if (self.axes
and len(x) > self._subslice_optim_min_size
and _path.is_sorted_and_has_non_nan(x)
and self.axes.name == 'rectilinear'
and self.axes.get_xscale() == 'linear'
and self._markevery is None
and self.get_clip_on()
and self.get_transform() == self.axes.transData):
self._subslice = True
nanmask = np.isnan(x)
if nanmask.any():
self._x_filled = self._x.copy()
indices = np.arange(len(x))
self._x_filled[nanmask] = np.interp(
indices[nanmask], indices[~nanmask], self._x[~nanmask])
else:
self._x_filled = self._x
if self._path is not None:
interpolation_steps = self._path._interpolation_steps
else:
interpolation_steps = 1
if self._drawstyle == 'default':
vertices = self._xy
else:
step_func = STEP_LOOKUP_MAP[self._drawstyle]
vertices = np.asarray(step_func(*self._xy.T)).T
self._path = Path(vertices, _interpolation_steps=interpolation_steps)
self._transformed_path = None
self._invalidx = False
self._invalidy = False
def _transform_path(self, subslice=None):
"""
Put a TransformedPath instance at self._transformed_path;
all invalidation of the transform is then handled by the
TransformedPath instance.
"""
# Masked arrays are now handled by the Path class itself
if subslice is not None:
if self._drawstyle == 'default':
vertices = self._xy[subslice]
else:
step_func = STEP_LOOKUP_MAP[self._drawstyle]
vertices = np.asarray(step_func(*self._xy[subslice, :].T)).T
_path = Path(vertices,
_interpolation_steps=self._path._interpolation_steps)
else:
_path = self._path
self._transformed_path = TransformedPath(_path, self.get_transform())
def _get_transformed_path(self):
"""Return this line's `~matplotlib.transforms.TransformedPath`."""
if self._transformed_path is None:
self._transform_path()
return self._transformed_path
def set_transform(self, t):
# docstring inherited
self._invalidx = True
self._invalidy = True
super().set_transform(t)
@allow_rasterization
def draw(self, renderer):
# docstring inherited
if not self.get_visible():
return
if self._invalidy or self._invalidx:
self.recache()
self.ind_offset = 0 # Needed for contains() method.
if self._subslice and self.axes:
x0, x1 = self.axes.get_xbound()
i0 = self._x_filled.searchsorted(x0, 'left')
i1 = self._x_filled.searchsorted(x1, 'right')
subslice = slice(max(i0 - 1, 0), i1 + 1)
self.ind_offset = subslice.start
self._transform_path(subslice)
else:
subslice = None
if self.get_path_effects():
from matplotlib.patheffects import PathEffectRenderer
renderer = PathEffectRenderer(self.get_path_effects(), renderer)
renderer.open_group('line2d', self.get_gid())
if self._lineStyles[self._linestyle] != '_draw_nothing':
tpath, affine = (self._get_transformed_path()
.get_transformed_path_and_affine())
if len(tpath.vertices):
gc = renderer.new_gc()
self._set_gc_clip(gc)
gc.set_url(self.get_url())
gc.set_antialiased(self._antialiased)
gc.set_linewidth(self._linewidth)
if self.is_dashed():
cap = self._dashcapstyle
join = self._dashjoinstyle
else:
cap = self._solidcapstyle
join = self._solidjoinstyle
gc.set_joinstyle(join)
gc.set_capstyle(cap)
gc.set_snap(self.get_snap())
if self.get_sketch_params() is not None:
gc.set_sketch_params(*self.get_sketch_params())
# We first draw a path within the gaps if needed, but only for
# visible dashed lines; zero-width lines would otherwise yield
# all-zero dashes.
if (self._linewidth > 0 and self.is_dashed()
and self._gapcolor is not None):
lc_rgba = mcolors.to_rgba(self._gapcolor, self._alpha)
gc.set_foreground(lc_rgba, isRGBA=True)
offset_gaps, gaps = _get_inverse_dash_pattern(
*self._dash_pattern)
gc.set_dashes(offset_gaps, gaps)
renderer.draw_path(gc, tpath, affine.frozen())
lc_rgba = mcolors.to_rgba(self._color, self._alpha)
gc.set_foreground(lc_rgba, isRGBA=True)
if self._linewidth > 0:
gc.set_dashes(*self._dash_pattern)
else:
gc.set_dashes(0, None)
renderer.draw_path(gc, tpath, affine.frozen())
gc.restore()
if self._marker and self._markersize > 0:
gc = renderer.new_gc()
self._set_gc_clip(gc)
gc.set_url(self.get_url())
gc.set_linewidth(self._markeredgewidth)
gc.set_antialiased(self._antialiased)
ec_rgba = mcolors.to_rgba(
self.get_markeredgecolor(), self._alpha)
fc_rgba = mcolors.to_rgba(
self._get_markerfacecolor(), self._alpha)
fcalt_rgba = mcolors.to_rgba(
self._get_markerfacecolor(alt=True), self._alpha)
# If the edgecolor is "auto", it is set according to the *line*
# color but inherits the alpha value of the *face* color, if any.
if (cbook._str_equal(self._markeredgecolor, "auto")
and not cbook._str_lower_equal(
self.get_markerfacecolor(), "none")):
ec_rgba = ec_rgba[:3] + (fc_rgba[3],)
gc.set_foreground(ec_rgba, isRGBA=True)
if self.get_sketch_params() is not None:
scale, length, randomness = self.get_sketch_params()
gc.set_sketch_params(scale/2, length/2, 2*randomness)
marker = self._marker
# Markers *must* be drawn ignoring the drawstyle (but don't pay the
# recaching if drawstyle is already "default").
if self.get_drawstyle() != "default":
with cbook._setattr_cm(
self, _drawstyle="default", _transformed_path=None):
self.recache()
self._transform_path(subslice)
tpath, affine = (self._get_transformed_path()
.get_transformed_points_and_affine())
else:
tpath, affine = (self._get_transformed_path()
.get_transformed_points_and_affine())
if len(tpath.vertices):
# subsample the markers if markevery is not None
markevery = self.get_markevery()
if markevery is not None:
subsampled = _mark_every_path(
markevery, tpath, affine, self.axes)
else:
subsampled = tpath
snap = marker.get_snap_threshold()
if isinstance(snap, Real):
snap = renderer.points_to_pixels(self._markersize) >= snap
gc.set_snap(snap)
gc.set_joinstyle(marker.get_joinstyle())
gc.set_capstyle(marker.get_capstyle())
marker_path = marker.get_path()
marker_trans = marker.get_transform()
w = renderer.points_to_pixels(self._markersize)
if cbook._str_equal(marker.get_marker(), ","):
gc.set_linewidth(0)
else:
# Don't scale for pixels, and don't stroke them
marker_trans = marker_trans.scale(w)
renderer.draw_markers(gc, marker_path, marker_trans,
subsampled, affine.frozen(),
fc_rgba)
alt_marker_path = marker.get_alt_path()
if alt_marker_path:
alt_marker_trans = marker.get_alt_transform()
alt_marker_trans = alt_marker_trans.scale(w)
renderer.draw_markers(
gc, alt_marker_path, alt_marker_trans, subsampled,
affine.frozen(), fcalt_rgba)
gc.restore()
renderer.close_group('line2d')
self.stale = False
def get_antialiased(self):
"""Return whether antialiased rendering is used."""
return self._antialiased
def get_color(self):
"""
Return the line color.
See also `~.Line2D.set_color`.
"""
return self._color
def get_drawstyle(self):
"""
Return the drawstyle.
See also `~.Line2D.set_drawstyle`.
"""
return self._drawstyle
def get_gapcolor(self):
"""
Return the line gapcolor.
See also `~.Line2D.set_gapcolor`.
"""
return self._gapcolor
def get_linestyle(self):
"""
Return the linestyle.
See also `~.Line2D.set_linestyle`.
"""
return self._linestyle
def get_linewidth(self):
"""
Return the linewidth in points.
See also `~.Line2D.set_linewidth`.
"""
return self._linewidth
def get_marker(self):
"""
Return the line marker.
See also `~.Line2D.set_marker`.
"""
return self._marker.get_marker()
def get_markeredgecolor(self):
"""
Return the marker edge color.
See also `~.Line2D.set_markeredgecolor`.
"""
mec = self._markeredgecolor
if cbook._str_equal(mec, 'auto'):
if mpl.rcParams['_internal.classic_mode']:
if self._marker.get_marker() in ('.', ','):
return self._color
if (self._marker.is_filled()
and self._marker.get_fillstyle() != 'none'):
return 'k' # Bad hard-wired default...
return self._color
else:
return mec
def get_markeredgewidth(self):
"""
Return the marker edge width in points.
See also `~.Line2D.set_markeredgewidth`.
"""
return self._markeredgewidth
def _get_markerfacecolor(self, alt=False):
if self._marker.get_fillstyle() == 'none':
return 'none'
fc = self._markerfacecoloralt if alt else self._markerfacecolor
if cbook._str_lower_equal(fc, 'auto'):
return self._color
else:
return fc
def get_markerfacecolor(self):
"""
Return the marker face color.
See also `~.Line2D.set_markerfacecolor`.
"""
return self._get_markerfacecolor(alt=False)
You can’t perform that action at this time.