如何解决ValueError：零大小的数组，以最小化没有身份的缩小操作-Seaborn
以下代码突然声明产生错误。之前运行良好。我刚刚重新安装了seaborn软件包。
plt.figure(figsize=(26,16))
sns.scatterplot(
x="tsne-2d-one",y="tsne-2d-two",hue="label",palette=sns.color_palette("hls",14),data=df_subset,legend="full",alpha=1,s=100
)
跟踪：
---------------------------------------------------------------------------
ValueError Traceback (most recent call last)
c:\<path>_venv\lib\site-packages\IPython\core\formatters.py in __call__(self,obj)
339 pass
340 else:
--> 341 return printer(obj)
342 # Finally look for special method names
343 method = get_real_method(obj,self.print_method)
c:\<path>_venv\lib\site-packages\IPython\core\pylabtools.py in <lambda>(fig)
246
247 if 'png' in formats:
--> 248 png_formatter.for_type(Figure,lambda fig: print_figure(fig,'png',**kwargs))
249 if 'retina' in formats or 'png2x' in formats:
250 png_formatter.for_type(Figure,lambda fig: retina_figure(fig,**kwargs))
c:\<path>_venv\lib\site-packages\IPython\core\pylabtools.py in print_figure(fig,fmt,bbox_inches,**kwargs)
130 FigureCanvasBase(fig)
131
--> 132 fig.canvas.print_figure(bytes_io,**kw)
133 data = bytes_io.getvalue()
134 if fmt == 'svg':
c:\<path>_venv\lib\site-packages\matplotlib\backend_bases.py in print_figure(self,filename,dpi,facecolor,edgecolor,orientation,format,pad_inches,bbox_extra_artists,backend,**kwargs)
2191 else suppress())
2192 with ctx:
-> 2193 self.figure.draw(renderer)
2194
2195 bbox_inches = self.figure.get_tightbbox(
c:\<path>_venv\lib\site-packages\matplotlib\artist.py in draw_wrapper(artist,renderer,*args,**kwargs)
39 renderer.start_filter()
40
---> 41 return draw(artist,**kwargs)
42 finally:
43 if artist.get_agg_filter() is not None:
c:\<path>_venv\lib\site-packages\matplotlib\figure.py in draw(self,renderer)
1861
1862 self.patch.draw(renderer)
-> 1863 mimage._draw_list_compositing_images(
1864 renderer,self,artists,self.suppressComposite)
1865
c:\<path>_venv\lib\site-packages\matplotlib\image.py in _draw_list_compositing_images(renderer,parent,suppress_composite)
129 if not_composite or not has_images:
130 for a in artists:
--> 131 a.draw(renderer)
132 else:
133 # Composite any adjacent images together
c:\<path>_venv\lib\site-packages\matplotlib\artist.py in draw_wrapper(artist,**kwargs)
42 finally:
43 if artist.get_agg_filter() is not None:
c:\<path>_venv\lib\site-packages\matplotlib\cbook\deprecation.py in wrapper(*inner_args,**inner_kwargs)
409 else deprecation_addendum,410 **kwargs)
--> 411 return func(*inner_args,**inner_kwargs)
412
413 return wrapper
c:\<path>_venv\lib\site-packages\matplotlib\axes\_base.py in draw(self,inframe)
2746 renderer.stop_rasterizing()
2747
-> 2748 mimage._draw_list_compositing_images(renderer,artists)
2749
2750 renderer.close_group('axes')
c:\<path>_venv\lib\site-packages\matplotlib\image.py in _draw_list_compositing_images(renderer,**kwargs)
42 finally:
43 if artist.get_agg_filter() is not None:
c:\<path>_venv\lib\site-packages\matplotlib\collections.py in draw(self,renderer)
929 def draw(self,renderer):
930 self.set_sizes(self._sizes,self.figure.dpi)
--> 931 Collection.draw(self,renderer)
932
933
c:\<path>_venv\lib\site-packages\matplotlib\artist.py in draw_wrapper(artist,renderer)
383 else:
384 combined_transform = transform
--> 385 extents = paths[0].get_extents(combined_transform)
386 if (extents.width < self.figure.bbox.width
387 and extents.height < self.figure.bbox.height):
c:\<path>_venv\lib\site-packages\matplotlib\path.py in get_extents(self,transform,**kwargs)
601 xys.append(curve([0,*dzeros,1]))
602 xys = np.concatenate(xys)
--> 603 return Bbox([xys.min(axis=0),xys.max(axis=0)])
604
605 def intersects_path(self,other,filled=True):
c:\<path>_venv\lib\site-packages\numpy\core\_methods.py in _amin(a,axis,out,keepdims,initial,where)
32 def _amin(a,axis=None,out=None,keepdims=False,33 initial=_NoValue,where=True):
---> 34 return umr_minimum(a,None,where)
35
36 def _sum(a,dtype=None,ValueError: zero-size array to reduction operation minimum which has no identity
注意：df_subset不为空，我检查过。它具有3列“ tsne-2d-one”，“ tsne-2d-two”，“ label”
“ tsne-2d-one”，“ tsne-2d-two”包含浮点数据类型值
“标签”具有字符串/对象数据类型值
样本数据：
tsne-2d-one,tsne-2d-two,label
-14.02892,-24.425629,A_A-A
-13.000096,-23.515806,A_A-A
-14.205202,-24.717735,A_A-A
-15.494256,-25.991783,A_A-A
-13.5905905,-23.419744,A_A-A
-13.350816,-25.939915,A_A-A
-12.438069,-24.727852,A_A-A
-13.54109,-26.080505,A_A-A
-14.834715,-26.33772,A_A-A
-13.562927,-23.37612,A_A-A
-15.59718,-24.024368,A_A-A
-14.931401,-22.854977,A_A-A
-15.655616,-24.41179,A_A-A
-15.716855,-25.620882,A_A-A
-15.219434,-23.031553,A_A-A
2.084894,-14.178911,B_B
5.5166216,-12.401592,B_B
2.0064962,-14.086351,B_B
5.5460343,1.7539215,B_B
5.002867,-13.499105,B_B
-0.13123433,0.9796202,B_B
7.7138877,-7.102608,B_B
-0.119276464,0.99467605,B_B
6.679522,1.4599445,B_B
4.96602,-13.200384,B_B
9.150655,-3.64276,B_B
10.205461,-6.4425406,B_B
9.038797,-3.5547273,B_B
7.0086393,1.1566005,B_B
9.934251,-6.873103,B_B
-11.11679,-11.341377,C_C C
-14.512915,-8.015724,C_C C
-9.953341,-11.557578,C_C C
-16.696735,-6.1155863,C_C C
-15.87594,-8.795022,C_C C
-11.377112,-14.174167,C_C C
-13.324324,-9.64841,C_C C
-11.897048,-13.814134,C_C C
-16.109194,-11.869152,C_C C
-16.046644,-8.998125,C_C C
-9.286824,-14.231626,C_C C
-12.704834,-7.5153055,C_C C
-9.349987,-13.253436,C_C C
-18.200735,-7.0271044,C_C C
-12.994204,-6.0151153,C_C C
-3.0917523,-10.06981,D_D_1
4.6217837,-10.767031,D_D_1
-3.1154654,-10.096936,D_D_1
5.0603623,1.1476644,D_D_1
3.369002,-11.283088,D_D_1
-5.780945,-7.966547,D_D_1
6.6392574,-8.486886,D_D_1
-5.7979536,-7.9725084,D_D_1
5.7012763,0.1932977,D_D_1
3.4227533,-11.3441305,D_D_1
-4.905956,-10.156104,D_D_1
5.8067675,-9.307196,D_D_1
-4.96808,-10.07095,D_D_1
6.28622,0.08598101,D_D_1
5.3993483,-9.526921,D_D_1
-11.131304,-11.375446,E_E_E
-14.445314,-8.006492,E_E_E
-9.945171,-11.480152,E_E_E
-16.731579,-6.1148796,E_E_E
-15.929554,-8.714455,E_E_E
-11.266886,-14.26166,E_E_E
-13.352065,-9.705651,E_E_E
-12.172098,-13.885426,E_E_E
-15.697548,-11.84327,E_E_E
-15.805679,-8.887896,E_E_E
-9.271222,-14.296528,E_E_E
-12.608987,-7.5177,E_E_E
-9.163923,-13.434417,E_E_E
-18.181078,-6.843873,E_E_E
-12.912988,-6.0278206,E_E_E
-1.5422965,-7.8732953,F_F_F
3.1139162,-8.750587,F_F_F
-2.028107,-7.784009,F_F_F
2.9877954,-1.4773916,F_F_F
1.7015373,-9.468788,F_F_F
-4.2344203,-5.2941556,F_F_F
5.2705426,-6.563142,F_F_F
-4.2245245,-5.600589,F_F_F
4.684833,-1.3839812,F_F_F
1.722953,-9.421918,F_F_F
-1.1982858,-4.9888654,F_F_F
3.6919396,-6.494554,F_F_F
-2.0073545,-5.178361,F_F_F
3.9441528,-2.738101,F_F_F
2.5451581,-6.1722994,F_F_F
-1.120436,-7.3399386,G_G_G_G
2.8947587,-8.145696,G_G_G_G
-1.4918948,-7.1562057,G_G_G_G
2.9648385,-1.7110974,G_G_G_G
1.5439045,-8.104277,G_G_G_G
-3.5719488,-4.901991,G_G_G_G
4.9950256,-6.279537,G_G_G_G
-3.4592612,-5.118906,G_G_G_G
4.573509,-1.6888899,G_G_G_G
1.4670004,-8.103425,G_G_G_G
-1.326964,-4.7369046,G_G_G_G
3.5509024,-6.1993237,G_G_G_G
-1.9852517,-4.7963614,G_G_G_G
3.8905938,-2.847331,G_G_G_G
2.3077533,-6.1591887,G_G_G_G
-0.6611299,14.413035,H_H
1.6424932,16.130213,H_H
-0.7701603,14.268575,H_H
2.9109209,8.180244,H_H
0.5201868,15.787671,H_H
-1.6890637,12.033475,H_H
2.8793135,16.313625,H_H
-1.6425153,11.930886,H_H
4.051731,8.0262375,H_H
0.43125528,15.851444,H_H
-0.049206052,12.614705,H_H
2.4294627,15.448605,H_H
-0.1478604,12.405042,H_H
3.6674721,8.151972,H_H
1.3558089,14.236326,H_H
-11.285671,15.540629,I_I_I
-9.562131,15.355534,I_I_I
-11.530592,15.769008,I_I_I
-13.046774,14.795182,I_I_I
-10.370458,15.011783,I_I_I
-12.224443,17.218636,I_I_I
-9.128062,16.107723,I_I_I
-12.329284,17.033316,I_I_I
-13.2455635,15.28421,I_I_I
-10.374858,15.010645,I_I_I
-11.048521,17.406425,I_I_I
-9.423859,16.605726,I_I_I
-11.302727,17.159101,I_I_I
-13.303642,14.898152,I_I_I
-10.067334,17.044987,I_I_I
19.458284,3.601622,J_J
18.161573,1.9801935,J_J
19.400095,4.1047544,J_J
16.417835,5.31509,J_J
18.94254,2.32699,J_J
18.529085,4.935621,J_J
16.578032,2.6348052,J_J
18.3073,5.0299187,J_J
16.369411,4.8019056,J_J
18.929241,2.3260906,J_J
18.18062,3.939813,J_J
16.98714,2.6408002,J_J
17.972517,4.1568704,J_J
16.239166,4.6899467,J_J
17.585348,2.8919232,J_J
-20.025661,8.026763,K_K_K
-20.538462,6.0866313,K_K_K
-19.686363,8.2460785,K_K_K
-18.748287,9.191302,K_K_K
-20.795744,7.023851,K_K_K
-17.74393,7.074227,K_K_K
-19.303535,5.2147784,K_K_K
-17.688332,7.3439727,K_K_K
-17.846653,8.789439,K_K_K
-20.777353,7.0788684,K_K_K
-18.925882,7.140357,K_K_K
-19.634892,5.644755,K_K_K
-18.661663,7.5221934,K_K_K
-18.29901,8.960838,K_K_K
-19.38654,6.43482,K_K_K
13.265437,15.976807,L_L_L
13.597595,19.052914,L_L_L
13.323307,16.138601,L_L_L
12.454088,17.811083,L_L_L
13.339949,19.46192,L_L_L
14.46764,15.587214,L_L_L
14.454488,18.439106,L_L_L
14.335033,15.607529,L_L_L
12.673782,17.41954,L_L_L
13.322454,19.446009,L_L_L
15.088017,16.46231,L_L_L
15.003597,18.347887,L_L_L
14.939234,16.422993,L_L_L
13.032935,17.582718,L_L_L
15.379603,18.11169,L_L_L
2.9893792,11.708033,M_M
4.0582185,14.155455,M_M
2.8813481,11.428211,M_M
2.9041388,8.880342,M_M
4.0471163,13.003807,M_M
-0.24122916,10.381815,M_M
3.4628656,15.878884,M_M
-0.17790422,10.348041,M_M
4.228249,8.942132,M_M
4.1144986,13.007208,M_M
1.0553777,11.241994,M_M
3.0545413,14.678934,M_M
1.1478767,10.947674,M_M
3.724015,9.194509,M_M
2.356918,13.5421915,M_M
19.131111,-8.112185,N_N_N
20.842833,-8.569077,N_N_N
19.030348,-8.294446,N_N_N
22.435442,-8.890868,N_N_N
20.483664,-8.155657,N_N_N
18.633186,-9.510608,N_N_N
20.852346,-9.7075,N_N_N
18.776926,-9.64985,N_N_N
22.413244,-9.279601,N_N_N
20.41144,-8.146459,N_N_N
19.47922,-10.565168,N_N_N
20.925726,-10.302838,N_N_N
19.37557,-10.4150505,N_N_N
22.429592,-9.683258,N_N_N
20.584888,-10.687437,N_N_N
解决方法
我注意到@Hitsesh Somani最初也发生了相同的错误 ，即使是Seaborn官方网站上给出的一些示例代码段 （{{ 3}}）。
例如，下面的示例是直接从Seaborn复制并粘贴的，与@Hitesh Somani提到的错误相同：
import seaborn as sns; sns.set()
import matplotlib.pyplot as plt
tips = sns.load_dataset("tips")
ax = sns.scatterplot(x="total_bill",y="tip",hue="time",data=tips)
以上内容将返回以下错误：
---------------------------------------------------------------------------
ValueError Traceback (most recent call last)
c:\users\will\desktop\new folder\tester\lib\site-packages\IPython\core\formatters.py in __call__(self,obj)
339 pass
340 else:
--> 341 return printer(obj)
342 # Finally look for special method names
343 method = get_real_method(obj,self.print_method)
c:\users\will\desktop\new folder\tester\lib\site-packages\IPython\core\pylabtools.py in <lambda>(fig)
246
247 if 'png' in formats:
--> 248 png_formatter.for_type(Figure,lambda fig: print_figure(fig,'png',**kwargs))
249 if 'retina' in formats or 'png2x' in formats:
250 png_formatter.for_type(Figure,lambda fig: retina_figure(fig,**kwargs))
c:\users\will\desktop\new folder\tester\lib\site-packages\IPython\core\pylabtools.py in print_figure(fig,fmt,bbox_inches,**kwargs)
130 FigureCanvasBase(fig)
131
--> 132 fig.canvas.print_figure(bytes_io,**kw)
133 data = bytes_io.getvalue()
134 if fmt == 'svg':
c:\users\will\desktop\new folder\tester\lib\site-packages\matplotlib\backend_bases.py in print_figure(self,filename,dpi,facecolor,edgecolor,orientation,format,pad_inches,bbox_extra_artists,backend,**kwargs)
2191 else suppress())
2192 with ctx:
-> 2193 self.figure.draw(renderer)
2194
2195 bbox_inches = self.figure.get_tightbbox(
c:\users\will\desktop\new folder\tester\lib\site-packages\matplotlib\artist.py in draw_wrapper(artist,renderer,*args,**kwargs)
39 renderer.start_filter()
40
---> 41 return draw(artist,**kwargs)
42 finally:
43 if artist.get_agg_filter() is not None:
c:\users\will\desktop\new folder\tester\lib\site-packages\matplotlib\figure.py in draw(self,renderer)
1861
1862 self.patch.draw(renderer)
-> 1863 mimage._draw_list_compositing_images(
1864 renderer,self,artists,self.suppressComposite)
1865
c:\users\will\desktop\new folder\tester\lib\site-packages\matplotlib\image.py in _draw_list_compositing_images(renderer,parent,suppress_composite)
129 if not_composite or not has_images:
130 for a in artists:
--> 131 a.draw(renderer)
132 else:
133 # Composite any adjacent images together
c:\users\will\desktop\new folder\tester\lib\site-packages\matplotlib\artist.py in draw_wrapper(artist,**kwargs)
42 finally:
43 if artist.get_agg_filter() is not None:
c:\users\will\desktop\new folder\tester\lib\site-packages\matplotlib\cbook\deprecation.py in wrapper(*inner_args,**inner_kwargs)
409 else deprecation_addendum,410 **kwargs)
--> 411 return func(*inner_args,**inner_kwargs)
412
413 return wrapper
c:\users\will\desktop\new folder\tester\lib\site-packages\matplotlib\axes\_base.py in draw(self,inframe)
2746 renderer.stop_rasterizing()
2747
-> 2748 mimage._draw_list_compositing_images(renderer,artists)
2749
2750 renderer.close_group('axes')
c:\users\will\desktop\new folder\tester\lib\site-packages\matplotlib\image.py in _draw_list_compositing_images(renderer,**kwargs)
42 finally:
43 if artist.get_agg_filter() is not None:
c:\users\will\desktop\new folder\tester\lib\site-packages\matplotlib\collections.py in draw(self,renderer)
929 def draw(self,renderer):
930 self.set_sizes(self._sizes,self.figure.dpi)
--> 931 Collection.draw(self,renderer)
932
933
c:\users\will\desktop\new folder\tester\lib\site-packages\matplotlib\artist.py in draw_wrapper(artist,renderer)
383 else:
384 combined_transform = transform
--> 385 extents = paths[0].get_extents(combined_transform)
386 if (extents.width < self.figure.bbox.width
387 and extents.height < self.figure.bbox.height):
c:\users\will\desktop\new folder\tester\lib\site-packages\matplotlib\path.py in get_extents(self,transform,**kwargs)
601 xys.append(curve([0,*dzeros,1]))
602 xys = np.concatenate(xys)
--> 603 return Bbox([xys.min(axis=0),xys.max(axis=0)])
604
605 def intersects_path(self,other,filled=True):
c:\users\will\desktop\new folder\tester\lib\site-packages\numpy\core\_methods.py in _amin(a,axis,out,keepdims,initial,where)
41 def _amin(a,axis=None,out=None,keepdims=False,42 initial=_NoValue,where=True):
---> 43 return umr_minimum(a,None,where)
44
45 def _sum(a,dtype=None,ValueError: zero-size array to reduction operation minimum which has no identity
<Figure size 432x288 with 1 Axes>
我在Windows 10计算机上的以下位置：
jupyter core==4.6.3
jupyter-notebook==6.1.3
ipython==7.18.1
matplotlib==3.3.1
numpy==1.19.1
pandas==1.1.1
seaborn==0.10.1
和Python v3.8.5。
,问题与3.3.1中的matplotlib回归有关。
Original seaborn issue (closed)
解决方案是将matplotlib固定到3.3.0，直到发布3.3.2，尽管seaborn的下一个发行版将包括解决方法。
更新（9/10/20）：Seaborn 0.11.0现在可用，其中包含解决方法，即使使用matplotlib 3.3.1，也可以使散点图正常工作。
,第二个@ Brock，matplotlib回归中存在错误。使用下面的conda命令改回matplotlib 3.3.0，可以为我解决问题。
conda install -c conda-forge matplotlib=3.3.0
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