numpy.argmin(array，axis = None，out = None)：返回特定轴上数组min元素的索引。
参数：
array:Input array to work on
axis :[int, optional]Along a specified axis like 0 or 1
out :[array optional]Provides a feature to insert output to the out
array and it should be of appropriate shape and dtype
返回：
Array of indices into the array with same shape as array.shape with the dimension along axis removed.
代码1：
# Python Program illustrating
# working of argmin()
import numpy as geek
# Working on 1D array
array = geek.arange(8)
print("INPUT ARRAY:\n", array)
# returning Indices of the min element
# as per the indices
print("\nIndices of min element:", geek.argmin(array, axis=0))输出：
INPUT ARRAY: [0 1 2 3 4 5 6 7] Indices of min element: 0
代码2：
# Python Program illustarting
# working of argmin()
import numpy as geek
# Working on 2D array
array = geek.random.randint(16, size=(4, 4))
print("INPUT ARRAY:\n", array)
# returning Indices of the min element
# as per the indices
'''
[[ 8 13 5 0]
[ 0 2 5 3]
[10 7 15 15]
[ 3 11 4 12]]
^ ^ ^ ^
0 2 4 0 - element
1 1 3 0 - indices
'''
print("\nIndices of min element:", geek.argmin(array, axis = 0))输出：
INPUT ARRAY: [[ 8 13 5 0] [ 0 2 5 3] [10 7 15 15] [ 3 11 4 12]] Indices of min element: [1 1 3 0]
代码3：
# Python Program illustarting
# working of argmin()
import numpy as geek
# Working on 2D array
array = geek.arange(10).reshape(2, 5)
print("array:\n", array)
array[0][0] = 10
array[1][1] = 1
array[0][1] = 1
print("\narray:\n", array)
# Returns min element
print("\narray:", geek.argmin(array))
# First occurrence of an min element is given
print("\nmin ELEMENT INDICES:", geek.argmin(array, axis = 0))输出：
array: [[0 1 2 3 4] [5 6 7 8 9]] array: [[10 1 2 3 4] [ 5 1 7 8 9]] array: 1 min ELEMENT INDICES: [1 0 0 0 0]
参考文献：
https://docs.scipy.org/doc/numpy-dev/reference/generated/numpy.argmin.html#numpy.argmin
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注：本文由纯净天空筛选整理自 numpy.argmin() in Python。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。