Bug report

Bug summary

imshow of array with dtype float16 fails with unsupported dtype

Code for reproduction

import numpy as np
import matplotlib.pyplot as plt
#This works:
a = np.asarray([[0.1,0.2],[0.3,0.4]], dtype=np.float64)
plt.imshow(a), plt.show()
#This fails
a = np.asarray([[0.1,0.2],[0.3,0.4]], dtype=np.float16)
plt.imshow(a), plt.show()

Matplotlib version

• Operating system: Windows 10 1903
• Matplotlib version: 3.1.1
• Matplotlib backend (print(matplotlib.get_backend())): module://backend_interagg
• Python version: 3.73
• Jupyter version (if applicable): n/a
• Other libraries:

installed from default conda