Python - install zlim in mplot3D

Question

mpl.rcParams['legend.fontsize'] = 10 fig1 = plt.figure() ax = fig1.gca(projection='3d') ax.plot(tab_C[0], tab_C[1], zs=0, zdir='z', label = "Projection de la trajectoire de C", color='k') ax.plot(tab_M[0], tab_M[1], zs=0, zdir='z', label = "Projection de la trajectoire de M", color='r') for i in range(0,len(tab_t)): ax.plot(tab_C[0][i:i+2], tab_C[1][i:i+2], tab_C[2][i:i+2], color=plt.cm.rainbow(255*i/len(tab_t))) ax.plot(tab_M[0][i:i+2], tab_M[1][i:i+2], tab_M[2][i:i+2], color=plt.cm.rainbow(255*i/len(tab_t))) ax.legend() ax.set_xlabel('I') ax.set_ylabel('J') ax.set_zlabel('K') m = cm.ScalarMappable(cmap=cm.rainbow) m.set_array(tab_t) plt.colorbar(m) 

I have this plot with my code

My problems - I want to set a shortcut for the color bar, but ScalarMappale does not have the set_label () method - I want to set zmin = 0 to clearly see the projection onto the plan (0xy), but it seems that zmin is 0.05 here, and when I do ax .set_zlim (bottom = 0) It returns

 Traceback (most recent call last): File "code.py", line 117, in <module> ax.set_zlim(bottom=0) File "/usr/lib/pymodules/python2.7/mpl_toolkits/mplot3d/axes3d.py", line 515, in set_zlim3d lims = self._determine_lims(*args, **kwargs) File "/usr/lib/pymodules/python2.7/mpl_toolkits/mplot3d/axes3d.py", line 476, in _determine_lims xmin -= 0.05 TypeError: unsupported operand type(s) for -=: 'NoneType' and 'float' 

Is there any way to solve my problems?

Answer 1

the correct way to call: set_zlim(min_value, max_value) , if there are problems try also set_zlim3d

according to the documentation, the colorbar object has a set_label method, see an example here