num py . red 90()python
哎哎哎:# t0]https://www . geeksforgeeks . org/num py-red 90-python/
numpy.rot90() 方法在轴(0 或 1)指定的平面内将数组旋转 90 度。 语法:
numpy.rot90(array, k = 1, axes = (0, 1))
参数:
array : [array_like]i.e. array having two or more dimensions.
k : [optional , int]No. of times we wish to rotate array by 90 degrees.
axes : [array_like]Plane, along which we wish to rotate array.
返回:
rotated copy of array
# Python Program illustrating
# numpy.rot90() method
import numpy as geek
array = geek.arange(12).reshape(3, 4)
print("Original array : \n", array)
# Rotating array 4 times : Returns same original array
print("\nArray being rotated 4 times : \n", geek.rot90(array, 4))
# Rotating once
print("\nRotated array : \n", geek.rot90(array))
# Rotating twice
print("\nRotated array : \n", geek.rot90(array, 2))
输出:
Original array :
[[ 0 1 2 3]
[ 4 5 6 7]
[ 8 9 10 11]]
Array being rotated 4 times :
[[ 0 1 2 3]
[ 4 5 6 7]
[ 8 9 10 11]]
Rotated array :
[[ 3 7 11]
[ 2 6 10]
[ 1 5 9]
[ 0 4 8]]
Rotated array :
[[11 10 9 8]
[ 7 6 5 4]
[ 3 2 1 0]]
参考文献: https://docs . scipy . org/doc/numpy-dev/reference/generated/numpy . rot 90 . html
注意: 这些代码不会在在线-ID 上运行。请在您的系统上运行它们来探索工作的 。 本文由 Mohit Gupta_OMG 供稿😀 。如果你喜欢 GeeksforGeeks 并想投稿，你也可以使用contribute.geeksforgeeks.org写一篇文章或者把你的文章邮寄到 contribute@geeksforgeeks.org。看到你的文章出现在极客博客主页上，帮助其他极客。
