notebook 实现3d可视化

在3d分割中经常会遇到可视化问题，notebook中可以非常方便的实现

import numpy as np
import ipyvolume

x = np.zeros([100,100,100])
for i in range(0,100):
    x[i,0:i,40:70]=1
    
ipyvolume.figure()
ipyvolume.pylab.plot_isosurface(x.astype(np.float),color='green',level=0.01)
# ipyvolume.pylab.scatter(coord[:,2].astype(np.float), coord[:,1].astype(np.float), coord[:,0].astype(np.float),size=2,color='blue')
ipyvolume.show()