为Matplotlib Tricontourf添加Colorbar时：“ TypeError：必须首先为可映射对象设置set_array”MacOS出现此问题，Win10没问题

如何解决为Matplotlib Tricontourf添加Colorbar时：“ TypeError：必须首先为可映射对象设置set_array”MacOS出现此问题，Win10没问题

我有一个由几列组成的np.array，其中记录了许多参数以及从这些参数得出的结果。现在，我试图绘制两个参数的轮廓图，以查看它们对结果的影响。

param_1 = record[:,5]
param_2 = record[:,6]
result = record[:,3]
fig,ax = plt.subplots(figsize=(8,6))
cntr = ax.tricontourf(param_1,param_2,result,levels=15,cmap=cm.jet)
print(cntr.cvalues.min())
print(cntr.cvalues.max())
norm = matplotlib.colors.Normalize(vmin=cntr.cvalues.min(),vmax=cntr.cvalues.max())
sm = plt.cm.ScalarMappable(norm=norm,cmap=cm.jet)
print(sm)
fig.colorbar(sm,ticks=cntr.levels)

然后TypeError跳出：

0.0675
0.2925
<matplotlib.cm.ScalarMappable object at 0x1274adbe0>

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-23-1f1b3d95dbe5> in <module>
      9 sm = plt.cm.ScalarMappable(norm=norm,cmap=cm.jet)
     10 print(sm)
---> 11 fig.colorbar(sm,ticks=cntr.levels)

/anaconda3/lib/python3.7/site-packages/matplotlib/figure.py in colorbar(self,mappable,cax,ax,use_gridspec,**kw)
   2127                              'panchor']
   2128         cb_kw = {k: v for k,v in kw.items() if k not in NON_COLORBAR_KEYS}
-> 2129         cb = cbar.colorbar_factory(cax,**cb_kw)
   2130 
   2131         self.sca(current_ax)

/anaconda3/lib/python3.7/site-packages/matplotlib/colorbar.py in colorbar_factory(cax,**kwargs)
   1564         cb = ColorbarPatch(cax,**kwargs)
   1565     else:
-> 1566         cb = Colorbar(cax,**kwargs)
   1567 
   1568     cid = mappable.callbacksSM.connect('changed',cb.on_mappable_changed)

/anaconda3/lib/python3.7/site-packages/matplotlib/colorbar.py in __init__(self,**kw)
   1070         # Ensure the given mappable's norm has appropriate vmin and vmax set
   1071         # even if mappable.draw has not yet been called.
-> 1072         mappable.autoscale_None()
   1073 
   1074         self.mappable = mappable

/anaconda3/lib/python3.7/site-packages/matplotlib/cm.py in autoscale_None(self)
    372         """
    373         if self._A is None:
--> 374             raise TypeError('You must first set_array for mappable')
    375         self.norm.autoscale_None(self._A)
    376         self.changed()

TypeError: You must first set_array for mappable})

但是，使用相同的数据和代码，我可以在Windows10下制作它。看来问题出在操作系统（现在在MacOS中）。

此外，我在几个月前发现了一个类似的问题： enter link description here