擅长:python、mysql、java
<p>听起来你也想要一个转置:</p>
<pre><code>m_3d = np.random.rand(2000, 140, 190)
# break the 2000 dimension in two. Pick one:
m_4d = m_3d.reshape((50, 40, 140, 190))
# move the dimensions to collapse to be adjacent
# you might need to tweak this - you haven't given enough information to know
# what order you want
m_4d = m_4d.transpose((0, 2, 1, 3))
# collapse adjacent dimensions
m_2d = m_4d.reshape((7000, 7600))
</code></pre>