Holoviews "Points" 使用 Datashader 但 "Curve" 抛出错误
Holoviews "Points" working with Datashader but "Curve" is throwing an error
我在 Jupyter Notebook 的 Python 中处理大数据（约 2500 万点），并希望拥有一个不会永远加载的交互式图表。使用 Bokeh 为我提供了交互性，Holoviews 和 Datashader 允许相对快速地绘制数据图。
Python: 3.7.6
散景：1.4.0
全息视图：1.14.3
麻木的：1.19.5
Pandas: 1.0.1
数巴：0.48.0
我没问题运行这个例子代码：
import numpy as np, pandas as pd, holoviews as hv
from holoviews.operation.datashader import datashade
hv.extension('bokeh','matplotlib')
n = 100000
dates = pd.date_range(start='1990-01-01', freq='1T', periods=n)
point = hv.Points((dates,
np.random.normal(size=(n,))))
datashade(point, cmap=['red']).opts(width=800)
这给出了一个很好的图表：
但是当我将 Holoviews 选项从“点”切换到“曲线”（这是原始代码）时，如下所示：
import numpy as np, pandas as pd, holoviews as hv
from holoviews.operation.datashader import datashade
hv.extension('bokeh','matplotlib')
n = 100000
dates = pd.date_range(start='1990-01-01', freq='1T', periods=n)
curve = hv.Curve((dates,
np.random.normal(size=(n,))))
datashade(curve, cmap=['red']).opts(width=800)
我收到这么长的错误：
WARNING:param.dynamic_operation: Callable raised "TypingError('Failed in nopython mode pipeline (step: nopython frontend)\n\x1b[1m\x1b[1m\x1b[1m\x1b[1mFailed in nopython mode pipeline (step: nopython frontend)\n\x1b[1m\x1b[1m\x1b[1m\x1b[1mFailed in nopython mode pipeline (step: nopython frontend)\n\x1b[1m\x1b[1m\x1b[1m\x1b[1mFailed in nopython mode pipeline (step: nopython frontend)\nInternal error at <numba.typeinfer.StaticGetItemConstraint object at 0x0000021D40ACEC88>.\n\x1b[1m\x1b[1mtuple index out of range\x1b[0m\n\x1b[0m\x1b[1m[1] During: typing of static-get-item at C:\Users\HornLab\Anaconda3\lib\site-packages\datashader\glyphs\line.py (653)\x1b[0m\nEnable logging at debug level for details.\n\x1b[1m\nFile "..\..\..\Anaconda3\lib\site-packages\datashader\glyphs\line.py", line 653:\x1b[0m\n\x1b[1mdef _xiaolinwu(i, x0, x1, y0, y1, append, *aggs_and_cols):\n <source elided>\n agg = aggs_and_cols[0]\n\x1b[1m cols = aggs_and_cols[1]\n\x1b[0m \x1b[1m^\x1b[0m\x1b[0m\n\n\x1b[0m\x1b[1m[1] During: resolving callee type: type(CPUDispatcher(<function _xiaolinwu at 0x0000021D2E0B98B8>))\x1b[0m\n\x1b[0m\x1b[1m[2] During: typing of call at <draw_segment> (33)\n\x1b[0m\n\x1b[0m\x1b[1m[3] During: resolving callee type: type(CPUDispatcher(<function _xiaolinwu at 0x0000021D2E0B98B8>))\x1b[0m\n\x1b[0m\x1b[1m[4] During: typing of call at <draw_segment> (33)\n\x1b[0m\n\x1b[1m\nFile "<draw_segment>", line 33:\x1b[0m\n\x1b[1m<source missing, REPL/exec in use?>\x1b[0m\n\n\x1b[0m\x1b[1m[1] During: resolving callee type: type(CPUDispatcher(<function draw_segment at 0x0000021D4063DAF8>))\x1b[0m\n\x1b[0m\x1b[1m[2] During: typing of call at <perform_extend_line> (13)\n\x1b[0m\n\x1b[0m\x1b[1m[3] During: resolving callee type: type(CPUDispatcher(<function draw_segment at 0x0000021D4063DAF8>))\x1b[0m\n\x1b[0m\x1b[1m[4] During: typing of call at <perform_extend_line> (13)\n\x1b[0m\n\x1b[1m\nFile "<perform_extend_line>", line 13:\x1b[0m\n\x1b[1m<source missing, REPL/exec in use?>\x1b[0m\n\n\x1b[0m\x1b[1m[1] During: resolving callee type: type(CPUDispatcher(<function perform_extend_line at 0x0000021D4063DE58>))\x1b[0m\n\x1b[0m\x1b[1m[2] During: typing of call at <extend_cpu> (10)\n\x1b[0m\n\x1b[0m\x1b[1m[3] During: resolving callee type: type(CPUDispatcher(<function perform_extend_line at 0x0000021D4063DE58>))\x1b[0m\n\x1b[0m\x1b[1m[4] During: typing of call at <extend_cpu> (10)\n\x1b[0m\n\x1b[1m\nFile "<extend_cpu>", line 10:\x1b[0m\n\x1b[1m<source missing, REPL/exec in use?>\x1b[0m\n')".
Invoked as dynamic_operation(height=400, scale=1.0, width=400, x_range=None, y_range=None)
WARNING:param.dynamic_operation: Callable raised "TypingError('Failed in nopython mode pipeline (step: nopython frontend)\n\x1b[1m\x1b[1m\x1b[1m\x1b[1mFailed in nopython mode pipeline (step: nopython frontend)\n\x1b[1m\x1b[1m\x1b[1m\x1b[1mFailed in nopython mode pipeline (step: nopython frontend)\n\x1b[1m\x1b[1m\x1b[1m\x1b[1mFailed in nopython mode pipeline (step: nopython frontend)\nInternal error at <numba.typeinfer.StaticGetItemConstraint object at 0x0000021D40ACEC88>.\n\x1b[1m\x1b[1mtuple index out of range\x1b[0m\n\x1b[0m\x1b[1m[1] During: typing of static-get-item at C:\Users\HornLab\Anaconda3\lib\site-packages\datashader\glyphs\line.py (653)\x1b[0m\nEnable logging at debug level for details.\n\x1b[1m\nFile "..\..\..\Anaconda3\lib\site-packages\datashader\glyphs\line.py", line 653:\x1b[0m\n\x1b[1mdef _xiaolinwu(i, x0, x1, y0, y1, append, *aggs_and_cols):\n <source elided>\n agg = aggs_and_cols[0]\n\x1b[1m cols = aggs_and_cols[1]\n\x1b[0m \x1b[1m^\x1b[0m\x1b[0m\n\n\x1b[0m\x1b[1m[1] During: resolving callee type: type(CPUDispatcher(<function _xiaolinwu at 0x0000021D2E0B98B8>))\x1b[0m\n\x1b[0m\x1b[1m[2] During: typing of call at <draw_segment> (33)\n\x1b[0m\n\x1b[0m\x1b[1m[3] During: resolving callee type: type(CPUDispatcher(<function _xiaolinwu at 0x0000021D2E0B98B8>))\x1b[0m\n\x1b[0m\x1b[1m[4] During: typing of call at <draw_segment> (33)\n\x1b[0m\n\x1b[1m\nFile "<draw_segment>", line 33:\x1b[0m\n\x1b[1m<source missing, REPL/exec in use?>\x1b[0m\n\n\x1b[0m\x1b[1m[1] During: resolving callee type: type(CPUDispatcher(<function draw_segment at 0x0000021D4063DAF8>))\x1b[0m\n\x1b[0m\x1b[1m[2] During: typing of call at <perform_extend_line> (13)\n\x1b[0m\n\x1b[0m\x1b[1m[3] During: resolving callee type: type(CPUDispatcher(<function draw_segment at 0x0000021D4063DAF8>))\x1b[0m\n\x1b[0m\x1b[1m[4] During: typing of call at <perform_extend_line> (13)\n\x1b[0m\n\x1b[1m\nFile "<perform_extend_line>", line 13:\x1b[0m\n\x1b[1m<source missing, REPL/exec in use?>\x1b[0m\n\n\x1b[0m\x1b[1m[1] During: resolving callee type: type(CPUDispatcher(<function perform_extend_line at 0x0000021D4063DE58>))\x1b[0m\n\x1b[0m\x1b[1m[2] During: typing of call at <extend_cpu> (10)\n\x1b[0m\n\x1b[0m\x1b[1m[3] During: resolving callee type: type(CPUDispatcher(<function perform_extend_line at 0x0000021D4063DE58>))\x1b[0m\n\x1b[0m\x1b[1m[4] During: typing of call at <extend_cpu> (10)\n\x1b[0m\n\x1b[1m\nFile "<extend_cpu>", line 10:\x1b[0m\n\x1b[1m<source missing, REPL/exec in use?>\x1b[0m\n')".
Invoked as dynamic_operation(height=400, scale=1.0, width=400, x_range=None, y_range=None)
---------------------------------------------------------------------------
TypingError Traceback (most recent call last)
~\Anaconda3\lib\site-packages\IPython\core\formatters.py in __call__(self, obj, include, exclude)
968
969 if method is not None:
--> 970 return method(include=include, exclude=exclude)
971 return None
972 else:
~\Anaconda3\lib\site-packages\holoviews\core\dimension.py in _repr_mimebundle_(self, include, exclude)
1315 combined and returned.
1316 """
-> 1317 return Store.render(self)
1318
1319
~\Anaconda3\lib\site-packages\holoviews\core\options.py in render(cls, obj)
1403 data, metadata = {}, {}
1404 for hook in hooks:
-> 1405 ret = hook(obj)
1406 if ret is None:
1407 continue
~\Anaconda3\lib\site-packages\holoviews\ipython\display_hooks.py in pprint_display(obj)
280 if not ip.display_formatter.formatters['text/plain'].pprint:
281 return None
--> 282 return display(obj, raw_output=True)
283
284
~\Anaconda3\lib\site-packages\holoviews\ipython\display_hooks.py in display(obj, raw_output, **kwargs)
256 elif isinstance(obj, (HoloMap, DynamicMap)):
257 with option_state(obj):
--> 258 output = map_display(obj)
259 elif isinstance(obj, Plot):
260 output = render(obj)
~\Anaconda3\lib\site-packages\holoviews\ipython\display_hooks.py in wrapped(element)
144 try:
145 max_frames = OutputSettings.options['max_frames']
--> 146 mimebundle = fn(element, max_frames=max_frames)
147 if mimebundle is None:
148 return {}, {}
~\Anaconda3\lib\site-packages\holoviews\ipython\display_hooks.py in map_display(vmap, max_frames)
204 return None
205
--> 206 return render(vmap)
207
208
~\Anaconda3\lib\site-packages\holoviews\ipython\display_hooks.py in render(obj, **kwargs)
66 renderer = renderer.instance(fig='png')
67
---> 68 return renderer.components(obj, **kwargs)
69
70
~\Anaconda3\lib\site-packages\holoviews\plotting\renderer.py in components(self, obj, fmt, comm, **kwargs)
408 doc = Document()
409 with config.set(embed=embed):
--> 410 model = plot.layout._render_model(doc, comm)
411 if embed:
412 return render_model(model, comm)
~\Anaconda3\lib\site-packages\panel\viewable.py in _render_model(self, doc, comm)
425 if comm is None:
426 comm = state._comm_manager.get_server_comm()
--> 427 model = self.get_root(doc, comm)
428
429 if config.embed:
~\Anaconda3\lib\site-packages\panel\viewable.py in get_root(self, doc, comm, preprocess)
482
483 doc = init_doc(doc)
--> 484 root = self._get_model(doc, comm=comm)
485 if preprocess:
486 self._preprocess(root)
~\Anaconda3\lib\site-packages\panel\layout\base.py in _get_model(self, doc, root, parent, comm)
111 if root is None:
112 root = model
--> 113 objects = self._get_objects(model, [], doc, root, comm)
114 props = dict(self._init_params(), objects=objects)
115 model.update(**self._process_param_change(props))
~\Anaconda3\lib\site-packages\panel\layout\base.py in _get_objects(self, model, old_objects, doc, root, comm)
101 else:
102 try:
--> 103 child = pane._get_model(doc, root, model, comm)
104 except RerenderError:
105 return self._get_objects(model, current_objects[:i], doc, root, comm)
~\Anaconda3\lib\site-packages\panel\pane\holoviews.py in _get_model(self, doc, root, parent, comm)
237 plot = self.object
238 else:
--> 239 plot = self._render(doc, comm, root)
240
241 plot.pane = self
~\Anaconda3\lib\site-packages\panel\pane\holoviews.py in _render(self, doc, comm, root)
302 kwargs['comm'] = comm
303
--> 304 return renderer.get_plot(self.object, **kwargs)
305
306 def _cleanup(self, root):
~\Anaconda3\lib\site-packages\holoviews\plotting\bokeh\renderer.py in get_plot(self_or_cls, obj, doc, renderer, **kwargs)
71 combining the bokeh model with another plot.
72 """
---> 73 plot = super(BokehRenderer, self_or_cls).get_plot(obj, doc, renderer, **kwargs)
74 if plot.document is None:
75 plot.document = Document() if self_or_cls.notebook_context else curdoc()
~\Anaconda3\lib\site-packages\holoviews\plotting\renderer.py in get_plot(self_or_cls, obj, doc, renderer, comm, **kwargs)
218
219 # Initialize DynamicMaps with first data item
--> 220 initialize_dynamic(obj)
221
222 if not renderer:
~\Anaconda3\lib\site-packages\holoviews\plotting\util.py in initialize_dynamic(obj)
250 continue
251 if not len(dmap):
--> 252 dmap[dmap._initial_key()]
253
254
~\Anaconda3\lib\site-packages\holoviews\core\spaces.py in __getitem__(self, key)
1339 # Not a cross product and nothing cached so compute element.
1340 if cache is not None: return cache
-> 1341 val = self._execute_callback(*tuple_key)
1342 if data_slice:
1343 val = self._dataslice(val, data_slice)
~\Anaconda3\lib\site-packages\holoviews\core\spaces.py in _execute_callback(self, *args)
1108
1109 with dynamicmap_memoization(self.callback, self.streams):
-> 1110 retval = self.callback(*args, **kwargs)
1111 return self._style(retval)
1112
~\Anaconda3\lib\site-packages\holoviews\core\spaces.py in __call__(self, *args, **kwargs)
712
713 try:
--> 714 ret = self.callable(*args, **kwargs)
715 except KeyError:
716 # KeyError is caught separately because it is used to signal
~\Anaconda3\lib\site-packages\holoviews\util\__init__.py in dynamic_operation(*key, **kwargs)
1040
1041 def dynamic_operation(*key, **kwargs):
-> 1042 key, obj = resolve(key, kwargs)
1043 return apply(obj, *key, **kwargs)
1044
~\Anaconda3\lib\site-packages\holoviews\util\__init__.py in resolve(key, kwargs)
1029 elif isinstance(map_obj, DynamicMap) and map_obj._posarg_keys and not key:
1030 key = tuple(kwargs[k] for k in map_obj._posarg_keys)
-> 1031 return key, map_obj[key]
1032
1033 def apply(element, *key, **kwargs):
~\Anaconda3\lib\site-packages\holoviews\core\spaces.py in __getitem__(self, key)
1339 # Not a cross product and nothing cached so compute element.
1340 if cache is not None: return cache
-> 1341 val = self._execute_callback(*tuple_key)
1342 if data_slice:
1343 val = self._dataslice(val, data_slice)
~\Anaconda3\lib\site-packages\holoviews\core\spaces.py in _execute_callback(self, *args)
1108
1109 with dynamicmap_memoization(self.callback, self.streams):
-> 1110 retval = self.callback(*args, **kwargs)
1111 return self._style(retval)
1112
~\Anaconda3\lib\site-packages\holoviews\core\spaces.py in __call__(self, *args, **kwargs)
712
713 try:
--> 714 ret = self.callable(*args, **kwargs)
715 except KeyError:
716 # KeyError is caught separately because it is used to signal
~\Anaconda3\lib\site-packages\holoviews\util\__init__.py in dynamic_operation(*key, **kwargs)
1041 def dynamic_operation(*key, **kwargs):
1042 key, obj = resolve(key, kwargs)
-> 1043 return apply(obj, *key, **kwargs)
1044
1045 operation = self.p.operation
~\Anaconda3\lib\site-packages\holoviews\util\__init__.py in apply(element, *key, **kwargs)
1033 def apply(element, *key, **kwargs):
1034 kwargs = dict(util.resolve_dependent_kwargs(self.p.kwargs), **kwargs)
-> 1035 processed = self._process(element, key, kwargs)
1036 if (self.p.link_dataset and isinstance(element, Dataset) and
1037 isinstance(processed, Dataset) and processed._dataset is None):
~\Anaconda3\lib\site-packages\holoviews\util\__init__.py in _process(self, element, key, kwargs)
1015 elif isinstance(self.p.operation, Operation):
1016 kwargs = {k: v for k, v in kwargs.items() if k in self.p.operation.param}
-> 1017 return self.p.operation.process_element(element, key, **kwargs)
1018 else:
1019 return self.p.operation(element, **kwargs)
~\Anaconda3\lib\site-packages\holoviews\core\operation.py in process_element(self, element, key, **params)
192 self.p = param.ParamOverrides(self, params,
193 allow_extra_keywords=self._allow_extra_keywords)
--> 194 return self._apply(element, key)
195
196
~\Anaconda3\lib\site-packages\holoviews\core\operation.py in _apply(self, element, key)
139 if not in_method:
140 element._in_method = True
--> 141 ret = self._process(element, key)
142 if hasattr(element, '_in_method') and not in_method:
143 element._in_method = in_method
~\Anaconda3\lib\site-packages\holoviews\operation\datashader.py in _process(self, element, key)
1496
1497 def _process(self, element, key=None):
-> 1498 agg = rasterize._process(self, element, key)
1499 shaded = shade._process(self, agg, key)
1500 return shaded
~\Anaconda3\lib\site-packages\holoviews\operation\datashader.py in _process(self, element, key)
1475 if k in transform.param})
1476 op._precomputed = self._precomputed
-> 1477 element = element.map(op, predicate)
1478 self._precomputed = op._precomputed
1479
~\Anaconda3\lib\site-packages\holoviews\core\data\__init__.py in pipelined_fn(*args, **kwargs)
203
204 try:
--> 205 result = method_fn(*args, **kwargs)
206 if PipelineMeta.disable:
207 return result
~\Anaconda3\lib\site-packages\holoviews\core\data\__init__.py in map(self, *args, **kwargs)
1220
1221 def map(self, *args, **kwargs):
-> 1222 return super(Dataset, self).map(*args, **kwargs)
1223 map.__doc__ = LabelledData.map.__doc__
1224
~\Anaconda3\lib\site-packages\holoviews\core\dimension.py in map(self, map_fn, specs, clone)
708 return deep_mapped
709 else:
--> 710 return map_fn(self) if applies else self
711
712
~\Anaconda3\lib\site-packages\holoviews\core\operation.py in __call__(self, element, **kwargs)
212 elif ((self._per_element and isinstance(element, Element)) or
213 (not self._per_element and isinstance(element, ViewableElement))):
--> 214 return self._apply(element)
215 elif 'streams' not in kwargs:
216 kwargs['streams'] = self.p.streams
~\Anaconda3\lib\site-packages\holoviews\core\operation.py in _apply(self, element, key)
139 if not in_method:
140 element._in_method = True
--> 141 ret = self._process(element, key)
142 if hasattr(element, '_in_method') and not in_method:
143 element._in_method = in_method
~\Anaconda3\lib\site-packages\holoviews\operation\datashader.py in _process(self, element, key)
468
469 dfdata = PandasInterface.as_dframe(data)
--> 470 agg = getattr(cvs, glyph)(dfdata, x.name, y.name, agg_fn)
471 if 'x_axis' in agg.coords and 'y_axis' in agg.coords:
472 agg = agg.rename({'x_axis': x, 'y_axis': y})
~\Anaconda3\lib\site-packages\datashader\core.py in line(self, source, x, y, agg, axis, geometry, antialias)
403 format(agg))
404 warnings.warn(message)
--> 405 return bypixel(source, self, glyph, agg)
406
407 def area(self, source, x, y, agg=None, axis=0, y_stack=None):
~\Anaconda3\lib\site-packages\datashader\core.py in bypixel(source, canvas, glyph, agg)
1211 with np.warnings.catch_warnings():
1212 np.warnings.filterwarnings('ignore', r'All-NaN (slice|axis) encountered')
-> 1213 return bypixel.pipeline(source, schema, canvas, glyph, agg)
1214
1215
~\Anaconda3\lib\site-packages\datashader\utils.py in __call__(self, head, *rest, **kwargs)
107 typ = type(head)
108 if typ in lk:
--> 109 return lk[typ](head, *rest, **kwargs)
110 for cls in getmro(typ)[1:]:
111 if cls in lk:
~\Anaconda3\lib\site-packages\datashader\data_libraries\pandas.py in pandas_pipeline(df, schema, canvas, glyph, summary)
15 @bypixel.pipeline.register(pd.DataFrame)
16 def pandas_pipeline(df, schema, canvas, glyph, summary):
---> 17 return glyph_dispatch(glyph, df, schema, canvas, summary)
18
19
~\Anaconda3\lib\site-packages\datashader\utils.py in __call__(self, head, *rest, **kwargs)
110 for cls in getmro(typ)[1:]:
111 if cls in lk:
--> 112 return lk[cls](head, *rest, **kwargs)
113 raise TypeError("No dispatch for {0} type".format(typ))
114
~\Anaconda3\lib\site-packages\datashader\data_libraries\pandas.py in default(glyph, source, schema, canvas, summary, cuda)
43
44 bases = create((height, width))
---> 45 extend(bases, source, x_st + y_st, x_range + y_range)
46
47 return finalize(bases,
~\Anaconda3\lib\site-packages\datashader\glyphs\line.py in extend(aggs, df, vt, bounds, plot_start)
71 do_extend(
72 sx, tx, sy, ty, xmin, xmax, ymin, ymax,
---> 73 xs, ys, plot_start, *aggs_and_cols
74 )
75
~\Anaconda3\lib\site-packages\numba\dispatcher.py in _compile_for_args(self, *args, **kws)
399 e.patch_message(msg)
400
--> 401 error_rewrite(e, 'typing')
402 except errors.UnsupportedError as e:
403 # Something unsupported is present in the user code, add help info
~\Anaconda3\lib\site-packages\numba\dispatcher.py in error_rewrite(e, issue_type)
342 raise e
343 else:
--> 344 reraise(type(e), e, None)
345
346 argtypes = []
~\Anaconda3\lib\site-packages\numba\six.py in reraise(tp, value, tb)
666 value = tp()
667 if value.__traceback__ is not tb:
--> 668 raise value.with_traceback(tb)
669 raise value
670
TypingError: Failed in nopython mode pipeline (step: nopython frontend)
Failed in nopython mode pipeline (step: nopython frontend)
Failed in nopython mode pipeline (step: nopython frontend)
Failed in nopython mode pipeline (step: nopython frontend)
Internal error at <numba.typeinfer.StaticGetItemConstraint object at 0x0000021D40ACEC88>.
tuple index out of range
[1] During: typing of static-get-item at C:\Users\HornLab\Anaconda3\lib\site-packages\datashader\glyphs\line.py (653)
Enable logging at debug level for details.
File "..\..\..\Anaconda3\lib\site-packages\datashader\glyphs\line.py", line 653:
def _xiaolinwu(i, x0, x1, y0, y1, append, *aggs_and_cols):
<source elided>
agg = aggs_and_cols[0]
cols = aggs_and_cols[1]
^
[1] During: resolving callee type: type(CPUDispatcher(<function _xiaolinwu at 0x0000021D2E0B98B8>))
[2] During: typing of call at <draw_segment> (33)
[3] During: resolving callee type: type(CPUDispatcher(<function _xiaolinwu at 0x0000021D2E0B98B8>))
[4] During: typing of call at <draw_segment> (33)
File "<draw_segment>", line 33:
<source missing, REPL/exec in use?>
[1] During: resolving callee type: type(CPUDispatcher(<function draw_segment at 0x0000021D4063DAF8>))
[2] During: typing of call at <perform_extend_line> (13)
[3] During: resolving callee type: type(CPUDispatcher(<function draw_segment at 0x0000021D4063DAF8>))
[4] During: typing of call at <perform_extend_line> (13)
File "<perform_extend_line>", line 13:
<source missing, REPL/exec in use?>
[1] During: resolving callee type: type(CPUDispatcher(<function perform_extend_line at 0x0000021D4063DE58>))
[2] During: typing of call at <extend_cpu> (10)
[3] During: resolving callee type: type(CPUDispatcher(<function perform_extend_line at 0x0000021D4063DE58>))
[4] During: typing of call at <extend_cpu> (10)
File "<extend_cpu>", line 10:
<source missing, REPL/exec in use?>
如果我删除“datashade”线并仅绘制 Holoviews 曲线图，那么它工作正常。但如果它是一个 2500 万个点的图，它会花很长时间，因此我需要 Datashader 的原因：
import numpy as np, pandas as pd, holoviews as hv
from holoviews.operation.datashader import datashade
hv.extension('bokeh','matplotlib')
n = 100000
dates = pd.date_range(start='1990-01-01', freq='1T', periods=n)
curve = hv.Curve((dates,
np.random.normal(size=(n,)))).opts(width = 1000)
curve
输出图：
关于可能导致此错误的原因有什么想法吗？如果需要，我可以提供任何其他信息。
您的 Datashader 代码在我的系统上运行良好：
也许您有一些旧版本，尤其是 Numba？
我在 Jupyter Notebook 的 Python 中处理大数据（约 2500 万点），并希望拥有一个不会永远加载的交互式图表。使用 Bokeh 为我提供了交互性，Holoviews 和 Datashader 允许相对快速地绘制数据图。
Python: 3.7.6
散景：1.4.0
全息视图：1.14.3
麻木的：1.19.5
Pandas: 1.0.1
数巴：0.48.0
我没问题运行这个例子代码：
import numpy as np, pandas as pd, holoviews as hv
from holoviews.operation.datashader import datashade
hv.extension('bokeh','matplotlib')
n = 100000
dates = pd.date_range(start='1990-01-01', freq='1T', periods=n)
point = hv.Points((dates,
np.random.normal(size=(n,))))
datashade(point, cmap=['red']).opts(width=800)
这给出了一个很好的图表：
但是当我将 Holoviews 选项从“点”切换到“曲线”（这是原始代码）时，如下所示：
import numpy as np, pandas as pd, holoviews as hv
from holoviews.operation.datashader import datashade
hv.extension('bokeh','matplotlib')
n = 100000
dates = pd.date_range(start='1990-01-01', freq='1T', periods=n)
curve = hv.Curve((dates,
np.random.normal(size=(n,))))
datashade(curve, cmap=['red']).opts(width=800)
我收到这么长的错误：
WARNING:param.dynamic_operation: Callable raised "TypingError('Failed in nopython mode pipeline (step: nopython frontend)\n\x1b[1m\x1b[1m\x1b[1m\x1b[1mFailed in nopython mode pipeline (step: nopython frontend)\n\x1b[1m\x1b[1m\x1b[1m\x1b[1mFailed in nopython mode pipeline (step: nopython frontend)\n\x1b[1m\x1b[1m\x1b[1m\x1b[1mFailed in nopython mode pipeline (step: nopython frontend)\nInternal error at <numba.typeinfer.StaticGetItemConstraint object at 0x0000021D40ACEC88>.\n\x1b[1m\x1b[1mtuple index out of range\x1b[0m\n\x1b[0m\x1b[1m[1] During: typing of static-get-item at C:\Users\HornLab\Anaconda3\lib\site-packages\datashader\glyphs\line.py (653)\x1b[0m\nEnable logging at debug level for details.\n\x1b[1m\nFile "..\..\..\Anaconda3\lib\site-packages\datashader\glyphs\line.py", line 653:\x1b[0m\n\x1b[1mdef _xiaolinwu(i, x0, x1, y0, y1, append, *aggs_and_cols):\n <source elided>\n agg = aggs_and_cols[0]\n\x1b[1m cols = aggs_and_cols[1]\n\x1b[0m \x1b[1m^\x1b[0m\x1b[0m\n\n\x1b[0m\x1b[1m[1] During: resolving callee type: type(CPUDispatcher(<function _xiaolinwu at 0x0000021D2E0B98B8>))\x1b[0m\n\x1b[0m\x1b[1m[2] During: typing of call at <draw_segment> (33)\n\x1b[0m\n\x1b[0m\x1b[1m[3] During: resolving callee type: type(CPUDispatcher(<function _xiaolinwu at 0x0000021D2E0B98B8>))\x1b[0m\n\x1b[0m\x1b[1m[4] During: typing of call at <draw_segment> (33)\n\x1b[0m\n\x1b[1m\nFile "<draw_segment>", line 33:\x1b[0m\n\x1b[1m<source missing, REPL/exec in use?>\x1b[0m\n\n\x1b[0m\x1b[1m[1] During: resolving callee type: type(CPUDispatcher(<function draw_segment at 0x0000021D4063DAF8>))\x1b[0m\n\x1b[0m\x1b[1m[2] During: typing of call at <perform_extend_line> (13)\n\x1b[0m\n\x1b[0m\x1b[1m[3] During: resolving callee type: type(CPUDispatcher(<function draw_segment at 0x0000021D4063DAF8>))\x1b[0m\n\x1b[0m\x1b[1m[4] During: typing of call at <perform_extend_line> (13)\n\x1b[0m\n\x1b[1m\nFile "<perform_extend_line>", line 13:\x1b[0m\n\x1b[1m<source missing, REPL/exec in use?>\x1b[0m\n\n\x1b[0m\x1b[1m[1] During: resolving callee type: type(CPUDispatcher(<function perform_extend_line at 0x0000021D4063DE58>))\x1b[0m\n\x1b[0m\x1b[1m[2] During: typing of call at <extend_cpu> (10)\n\x1b[0m\n\x1b[0m\x1b[1m[3] During: resolving callee type: type(CPUDispatcher(<function perform_extend_line at 0x0000021D4063DE58>))\x1b[0m\n\x1b[0m\x1b[1m[4] During: typing of call at <extend_cpu> (10)\n\x1b[0m\n\x1b[1m\nFile "<extend_cpu>", line 10:\x1b[0m\n\x1b[1m<source missing, REPL/exec in use?>\x1b[0m\n')".
Invoked as dynamic_operation(height=400, scale=1.0, width=400, x_range=None, y_range=None)
WARNING:param.dynamic_operation: Callable raised "TypingError('Failed in nopython mode pipeline (step: nopython frontend)\n\x1b[1m\x1b[1m\x1b[1m\x1b[1mFailed in nopython mode pipeline (step: nopython frontend)\n\x1b[1m\x1b[1m\x1b[1m\x1b[1mFailed in nopython mode pipeline (step: nopython frontend)\n\x1b[1m\x1b[1m\x1b[1m\x1b[1mFailed in nopython mode pipeline (step: nopython frontend)\nInternal error at <numba.typeinfer.StaticGetItemConstraint object at 0x0000021D40ACEC88>.\n\x1b[1m\x1b[1mtuple index out of range\x1b[0m\n\x1b[0m\x1b[1m[1] During: typing of static-get-item at C:\Users\HornLab\Anaconda3\lib\site-packages\datashader\glyphs\line.py (653)\x1b[0m\nEnable logging at debug level for details.\n\x1b[1m\nFile "..\..\..\Anaconda3\lib\site-packages\datashader\glyphs\line.py", line 653:\x1b[0m\n\x1b[1mdef _xiaolinwu(i, x0, x1, y0, y1, append, *aggs_and_cols):\n <source elided>\n agg = aggs_and_cols[0]\n\x1b[1m cols = aggs_and_cols[1]\n\x1b[0m \x1b[1m^\x1b[0m\x1b[0m\n\n\x1b[0m\x1b[1m[1] During: resolving callee type: type(CPUDispatcher(<function _xiaolinwu at 0x0000021D2E0B98B8>))\x1b[0m\n\x1b[0m\x1b[1m[2] During: typing of call at <draw_segment> (33)\n\x1b[0m\n\x1b[0m\x1b[1m[3] During: resolving callee type: type(CPUDispatcher(<function _xiaolinwu at 0x0000021D2E0B98B8>))\x1b[0m\n\x1b[0m\x1b[1m[4] During: typing of call at <draw_segment> (33)\n\x1b[0m\n\x1b[1m\nFile "<draw_segment>", line 33:\x1b[0m\n\x1b[1m<source missing, REPL/exec in use?>\x1b[0m\n\n\x1b[0m\x1b[1m[1] During: resolving callee type: type(CPUDispatcher(<function draw_segment at 0x0000021D4063DAF8>))\x1b[0m\n\x1b[0m\x1b[1m[2] During: typing of call at <perform_extend_line> (13)\n\x1b[0m\n\x1b[0m\x1b[1m[3] During: resolving callee type: type(CPUDispatcher(<function draw_segment at 0x0000021D4063DAF8>))\x1b[0m\n\x1b[0m\x1b[1m[4] During: typing of call at <perform_extend_line> (13)\n\x1b[0m\n\x1b[1m\nFile "<perform_extend_line>", line 13:\x1b[0m\n\x1b[1m<source missing, REPL/exec in use?>\x1b[0m\n\n\x1b[0m\x1b[1m[1] During: resolving callee type: type(CPUDispatcher(<function perform_extend_line at 0x0000021D4063DE58>))\x1b[0m\n\x1b[0m\x1b[1m[2] During: typing of call at <extend_cpu> (10)\n\x1b[0m\n\x1b[0m\x1b[1m[3] During: resolving callee type: type(CPUDispatcher(<function perform_extend_line at 0x0000021D4063DE58>))\x1b[0m\n\x1b[0m\x1b[1m[4] During: typing of call at <extend_cpu> (10)\n\x1b[0m\n\x1b[1m\nFile "<extend_cpu>", line 10:\x1b[0m\n\x1b[1m<source missing, REPL/exec in use?>\x1b[0m\n')".
Invoked as dynamic_operation(height=400, scale=1.0, width=400, x_range=None, y_range=None)
---------------------------------------------------------------------------
TypingError Traceback (most recent call last)
~\Anaconda3\lib\site-packages\IPython\core\formatters.py in __call__(self, obj, include, exclude)
968
969 if method is not None:
--> 970 return method(include=include, exclude=exclude)
971 return None
972 else:
~\Anaconda3\lib\site-packages\holoviews\core\dimension.py in _repr_mimebundle_(self, include, exclude)
1315 combined and returned.
1316 """
-> 1317 return Store.render(self)
1318
1319
~\Anaconda3\lib\site-packages\holoviews\core\options.py in render(cls, obj)
1403 data, metadata = {}, {}
1404 for hook in hooks:
-> 1405 ret = hook(obj)
1406 if ret is None:
1407 continue
~\Anaconda3\lib\site-packages\holoviews\ipython\display_hooks.py in pprint_display(obj)
280 if not ip.display_formatter.formatters['text/plain'].pprint:
281 return None
--> 282 return display(obj, raw_output=True)
283
284
~\Anaconda3\lib\site-packages\holoviews\ipython\display_hooks.py in display(obj, raw_output, **kwargs)
256 elif isinstance(obj, (HoloMap, DynamicMap)):
257 with option_state(obj):
--> 258 output = map_display(obj)
259 elif isinstance(obj, Plot):
260 output = render(obj)
~\Anaconda3\lib\site-packages\holoviews\ipython\display_hooks.py in wrapped(element)
144 try:
145 max_frames = OutputSettings.options['max_frames']
--> 146 mimebundle = fn(element, max_frames=max_frames)
147 if mimebundle is None:
148 return {}, {}
~\Anaconda3\lib\site-packages\holoviews\ipython\display_hooks.py in map_display(vmap, max_frames)
204 return None
205
--> 206 return render(vmap)
207
208
~\Anaconda3\lib\site-packages\holoviews\ipython\display_hooks.py in render(obj, **kwargs)
66 renderer = renderer.instance(fig='png')
67
---> 68 return renderer.components(obj, **kwargs)
69
70
~\Anaconda3\lib\site-packages\holoviews\plotting\renderer.py in components(self, obj, fmt, comm, **kwargs)
408 doc = Document()
409 with config.set(embed=embed):
--> 410 model = plot.layout._render_model(doc, comm)
411 if embed:
412 return render_model(model, comm)
~\Anaconda3\lib\site-packages\panel\viewable.py in _render_model(self, doc, comm)
425 if comm is None:
426 comm = state._comm_manager.get_server_comm()
--> 427 model = self.get_root(doc, comm)
428
429 if config.embed:
~\Anaconda3\lib\site-packages\panel\viewable.py in get_root(self, doc, comm, preprocess)
482
483 doc = init_doc(doc)
--> 484 root = self._get_model(doc, comm=comm)
485 if preprocess:
486 self._preprocess(root)
~\Anaconda3\lib\site-packages\panel\layout\base.py in _get_model(self, doc, root, parent, comm)
111 if root is None:
112 root = model
--> 113 objects = self._get_objects(model, [], doc, root, comm)
114 props = dict(self._init_params(), objects=objects)
115 model.update(**self._process_param_change(props))
~\Anaconda3\lib\site-packages\panel\layout\base.py in _get_objects(self, model, old_objects, doc, root, comm)
101 else:
102 try:
--> 103 child = pane._get_model(doc, root, model, comm)
104 except RerenderError:
105 return self._get_objects(model, current_objects[:i], doc, root, comm)
~\Anaconda3\lib\site-packages\panel\pane\holoviews.py in _get_model(self, doc, root, parent, comm)
237 plot = self.object
238 else:
--> 239 plot = self._render(doc, comm, root)
240
241 plot.pane = self
~\Anaconda3\lib\site-packages\panel\pane\holoviews.py in _render(self, doc, comm, root)
302 kwargs['comm'] = comm
303
--> 304 return renderer.get_plot(self.object, **kwargs)
305
306 def _cleanup(self, root):
~\Anaconda3\lib\site-packages\holoviews\plotting\bokeh\renderer.py in get_plot(self_or_cls, obj, doc, renderer, **kwargs)
71 combining the bokeh model with another plot.
72 """
---> 73 plot = super(BokehRenderer, self_or_cls).get_plot(obj, doc, renderer, **kwargs)
74 if plot.document is None:
75 plot.document = Document() if self_or_cls.notebook_context else curdoc()
~\Anaconda3\lib\site-packages\holoviews\plotting\renderer.py in get_plot(self_or_cls, obj, doc, renderer, comm, **kwargs)
218
219 # Initialize DynamicMaps with first data item
--> 220 initialize_dynamic(obj)
221
222 if not renderer:
~\Anaconda3\lib\site-packages\holoviews\plotting\util.py in initialize_dynamic(obj)
250 continue
251 if not len(dmap):
--> 252 dmap[dmap._initial_key()]
253
254
~\Anaconda3\lib\site-packages\holoviews\core\spaces.py in __getitem__(self, key)
1339 # Not a cross product and nothing cached so compute element.
1340 if cache is not None: return cache
-> 1341 val = self._execute_callback(*tuple_key)
1342 if data_slice:
1343 val = self._dataslice(val, data_slice)
~\Anaconda3\lib\site-packages\holoviews\core\spaces.py in _execute_callback(self, *args)
1108
1109 with dynamicmap_memoization(self.callback, self.streams):
-> 1110 retval = self.callback(*args, **kwargs)
1111 return self._style(retval)
1112
~\Anaconda3\lib\site-packages\holoviews\core\spaces.py in __call__(self, *args, **kwargs)
712
713 try:
--> 714 ret = self.callable(*args, **kwargs)
715 except KeyError:
716 # KeyError is caught separately because it is used to signal
~\Anaconda3\lib\site-packages\holoviews\util\__init__.py in dynamic_operation(*key, **kwargs)
1040
1041 def dynamic_operation(*key, **kwargs):
-> 1042 key, obj = resolve(key, kwargs)
1043 return apply(obj, *key, **kwargs)
1044
~\Anaconda3\lib\site-packages\holoviews\util\__init__.py in resolve(key, kwargs)
1029 elif isinstance(map_obj, DynamicMap) and map_obj._posarg_keys and not key:
1030 key = tuple(kwargs[k] for k in map_obj._posarg_keys)
-> 1031 return key, map_obj[key]
1032
1033 def apply(element, *key, **kwargs):
~\Anaconda3\lib\site-packages\holoviews\core\spaces.py in __getitem__(self, key)
1339 # Not a cross product and nothing cached so compute element.
1340 if cache is not None: return cache
-> 1341 val = self._execute_callback(*tuple_key)
1342 if data_slice:
1343 val = self._dataslice(val, data_slice)
~\Anaconda3\lib\site-packages\holoviews\core\spaces.py in _execute_callback(self, *args)
1108
1109 with dynamicmap_memoization(self.callback, self.streams):
-> 1110 retval = self.callback(*args, **kwargs)
1111 return self._style(retval)
1112
~\Anaconda3\lib\site-packages\holoviews\core\spaces.py in __call__(self, *args, **kwargs)
712
713 try:
--> 714 ret = self.callable(*args, **kwargs)
715 except KeyError:
716 # KeyError is caught separately because it is used to signal
~\Anaconda3\lib\site-packages\holoviews\util\__init__.py in dynamic_operation(*key, **kwargs)
1041 def dynamic_operation(*key, **kwargs):
1042 key, obj = resolve(key, kwargs)
-> 1043 return apply(obj, *key, **kwargs)
1044
1045 operation = self.p.operation
~\Anaconda3\lib\site-packages\holoviews\util\__init__.py in apply(element, *key, **kwargs)
1033 def apply(element, *key, **kwargs):
1034 kwargs = dict(util.resolve_dependent_kwargs(self.p.kwargs), **kwargs)
-> 1035 processed = self._process(element, key, kwargs)
1036 if (self.p.link_dataset and isinstance(element, Dataset) and
1037 isinstance(processed, Dataset) and processed._dataset is None):
~\Anaconda3\lib\site-packages\holoviews\util\__init__.py in _process(self, element, key, kwargs)
1015 elif isinstance(self.p.operation, Operation):
1016 kwargs = {k: v for k, v in kwargs.items() if k in self.p.operation.param}
-> 1017 return self.p.operation.process_element(element, key, **kwargs)
1018 else:
1019 return self.p.operation(element, **kwargs)
~\Anaconda3\lib\site-packages\holoviews\core\operation.py in process_element(self, element, key, **params)
192 self.p = param.ParamOverrides(self, params,
193 allow_extra_keywords=self._allow_extra_keywords)
--> 194 return self._apply(element, key)
195
196
~\Anaconda3\lib\site-packages\holoviews\core\operation.py in _apply(self, element, key)
139 if not in_method:
140 element._in_method = True
--> 141 ret = self._process(element, key)
142 if hasattr(element, '_in_method') and not in_method:
143 element._in_method = in_method
~\Anaconda3\lib\site-packages\holoviews\operation\datashader.py in _process(self, element, key)
1496
1497 def _process(self, element, key=None):
-> 1498 agg = rasterize._process(self, element, key)
1499 shaded = shade._process(self, agg, key)
1500 return shaded
~\Anaconda3\lib\site-packages\holoviews\operation\datashader.py in _process(self, element, key)
1475 if k in transform.param})
1476 op._precomputed = self._precomputed
-> 1477 element = element.map(op, predicate)
1478 self._precomputed = op._precomputed
1479
~\Anaconda3\lib\site-packages\holoviews\core\data\__init__.py in pipelined_fn(*args, **kwargs)
203
204 try:
--> 205 result = method_fn(*args, **kwargs)
206 if PipelineMeta.disable:
207 return result
~\Anaconda3\lib\site-packages\holoviews\core\data\__init__.py in map(self, *args, **kwargs)
1220
1221 def map(self, *args, **kwargs):
-> 1222 return super(Dataset, self).map(*args, **kwargs)
1223 map.__doc__ = LabelledData.map.__doc__
1224
~\Anaconda3\lib\site-packages\holoviews\core\dimension.py in map(self, map_fn, specs, clone)
708 return deep_mapped
709 else:
--> 710 return map_fn(self) if applies else self
711
712
~\Anaconda3\lib\site-packages\holoviews\core\operation.py in __call__(self, element, **kwargs)
212 elif ((self._per_element and isinstance(element, Element)) or
213 (not self._per_element and isinstance(element, ViewableElement))):
--> 214 return self._apply(element)
215 elif 'streams' not in kwargs:
216 kwargs['streams'] = self.p.streams
~\Anaconda3\lib\site-packages\holoviews\core\operation.py in _apply(self, element, key)
139 if not in_method:
140 element._in_method = True
--> 141 ret = self._process(element, key)
142 if hasattr(element, '_in_method') and not in_method:
143 element._in_method = in_method
~\Anaconda3\lib\site-packages\holoviews\operation\datashader.py in _process(self, element, key)
468
469 dfdata = PandasInterface.as_dframe(data)
--> 470 agg = getattr(cvs, glyph)(dfdata, x.name, y.name, agg_fn)
471 if 'x_axis' in agg.coords and 'y_axis' in agg.coords:
472 agg = agg.rename({'x_axis': x, 'y_axis': y})
~\Anaconda3\lib\site-packages\datashader\core.py in line(self, source, x, y, agg, axis, geometry, antialias)
403 format(agg))
404 warnings.warn(message)
--> 405 return bypixel(source, self, glyph, agg)
406
407 def area(self, source, x, y, agg=None, axis=0, y_stack=None):
~\Anaconda3\lib\site-packages\datashader\core.py in bypixel(source, canvas, glyph, agg)
1211 with np.warnings.catch_warnings():
1212 np.warnings.filterwarnings('ignore', r'All-NaN (slice|axis) encountered')
-> 1213 return bypixel.pipeline(source, schema, canvas, glyph, agg)
1214
1215
~\Anaconda3\lib\site-packages\datashader\utils.py in __call__(self, head, *rest, **kwargs)
107 typ = type(head)
108 if typ in lk:
--> 109 return lk[typ](head, *rest, **kwargs)
110 for cls in getmro(typ)[1:]:
111 if cls in lk:
~\Anaconda3\lib\site-packages\datashader\data_libraries\pandas.py in pandas_pipeline(df, schema, canvas, glyph, summary)
15 @bypixel.pipeline.register(pd.DataFrame)
16 def pandas_pipeline(df, schema, canvas, glyph, summary):
---> 17 return glyph_dispatch(glyph, df, schema, canvas, summary)
18
19
~\Anaconda3\lib\site-packages\datashader\utils.py in __call__(self, head, *rest, **kwargs)
110 for cls in getmro(typ)[1:]:
111 if cls in lk:
--> 112 return lk[cls](head, *rest, **kwargs)
113 raise TypeError("No dispatch for {0} type".format(typ))
114
~\Anaconda3\lib\site-packages\datashader\data_libraries\pandas.py in default(glyph, source, schema, canvas, summary, cuda)
43
44 bases = create((height, width))
---> 45 extend(bases, source, x_st + y_st, x_range + y_range)
46
47 return finalize(bases,
~\Anaconda3\lib\site-packages\datashader\glyphs\line.py in extend(aggs, df, vt, bounds, plot_start)
71 do_extend(
72 sx, tx, sy, ty, xmin, xmax, ymin, ymax,
---> 73 xs, ys, plot_start, *aggs_and_cols
74 )
75
~\Anaconda3\lib\site-packages\numba\dispatcher.py in _compile_for_args(self, *args, **kws)
399 e.patch_message(msg)
400
--> 401 error_rewrite(e, 'typing')
402 except errors.UnsupportedError as e:
403 # Something unsupported is present in the user code, add help info
~\Anaconda3\lib\site-packages\numba\dispatcher.py in error_rewrite(e, issue_type)
342 raise e
343 else:
--> 344 reraise(type(e), e, None)
345
346 argtypes = []
~\Anaconda3\lib\site-packages\numba\six.py in reraise(tp, value, tb)
666 value = tp()
667 if value.__traceback__ is not tb:
--> 668 raise value.with_traceback(tb)
669 raise value
670
TypingError: Failed in nopython mode pipeline (step: nopython frontend)
Failed in nopython mode pipeline (step: nopython frontend)
Failed in nopython mode pipeline (step: nopython frontend)
Failed in nopython mode pipeline (step: nopython frontend)
Internal error at <numba.typeinfer.StaticGetItemConstraint object at 0x0000021D40ACEC88>.
tuple index out of range
[1] During: typing of static-get-item at C:\Users\HornLab\Anaconda3\lib\site-packages\datashader\glyphs\line.py (653)
Enable logging at debug level for details.
File "..\..\..\Anaconda3\lib\site-packages\datashader\glyphs\line.py", line 653:
def _xiaolinwu(i, x0, x1, y0, y1, append, *aggs_and_cols):
<source elided>
agg = aggs_and_cols[0]
cols = aggs_and_cols[1]
^
[1] During: resolving callee type: type(CPUDispatcher(<function _xiaolinwu at 0x0000021D2E0B98B8>))
[2] During: typing of call at <draw_segment> (33)
[3] During: resolving callee type: type(CPUDispatcher(<function _xiaolinwu at 0x0000021D2E0B98B8>))
[4] During: typing of call at <draw_segment> (33)
File "<draw_segment>", line 33:
<source missing, REPL/exec in use?>
[1] During: resolving callee type: type(CPUDispatcher(<function draw_segment at 0x0000021D4063DAF8>))
[2] During: typing of call at <perform_extend_line> (13)
[3] During: resolving callee type: type(CPUDispatcher(<function draw_segment at 0x0000021D4063DAF8>))
[4] During: typing of call at <perform_extend_line> (13)
File "<perform_extend_line>", line 13:
<source missing, REPL/exec in use?>
[1] During: resolving callee type: type(CPUDispatcher(<function perform_extend_line at 0x0000021D4063DE58>))
[2] During: typing of call at <extend_cpu> (10)
[3] During: resolving callee type: type(CPUDispatcher(<function perform_extend_line at 0x0000021D4063DE58>))
[4] During: typing of call at <extend_cpu> (10)
File "<extend_cpu>", line 10:
<source missing, REPL/exec in use?>
如果我删除“datashade”线并仅绘制 Holoviews 曲线图，那么它工作正常。但如果它是一个 2500 万个点的图，它会花很长时间，因此我需要 Datashader 的原因：
import numpy as np, pandas as pd, holoviews as hv
from holoviews.operation.datashader import datashade
hv.extension('bokeh','matplotlib')
n = 100000
dates = pd.date_range(start='1990-01-01', freq='1T', periods=n)
curve = hv.Curve((dates,
np.random.normal(size=(n,)))).opts(width = 1000)
curve
输出图：
关于可能导致此错误的原因有什么想法吗？如果需要，我可以提供任何其他信息。
您的 Datashader 代码在我的系统上运行良好：
也许您有一些旧版本，尤其是 Numba？