how to get the first few lines of an ndarray 3d
>>> import numpy as np >>> v = np.array(np.arange(24)).reshape(2,3,4) >>> v array([[[ 0, 1, 2, 3], [ 4, 5, 6, 7], [ 8, 9, 10, 11]], [[12, 13, 14, 15], [16, 17, 18, 19], [20, 21, 22, 23]]]) >>> v[:, 1, 3] array([ 7, 19])
how to get the first few lines of an ndarray
In [11]: a[:,:2] Out[11]: array([[-0.57098887, -0.4274751 ], [-0.22279713, -0.51723555], [ 0.67492385, -0.69294472], [ 0.41086611, 0.26374238]])
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