numpy.vstack()函数用于垂直堆叠输入数组的序列以形成单个数组。
用法: numpy.vstack(tup)
参数:
tup :[ndarrays的序列]包含要堆叠的数组的元组。除第一轴外,所有阵列的形状都必须相同。
Return :[stacked ndarray]输入数组的堆栈数组。
代码1:
# Python program explaining
# vstack() function
import numpy as geek
# input array
in_arr1 = geek.array([ 1, 2, 3] )
print ("1st Input array:\n", in_arr1)
in_arr2 = geek.array([ 4, 5, 6] )
print ("2nd Input array:\n", in_arr2)
# Stacking the two arrays vertically
out_arr = geek.vstack((in_arr1, in_arr2))
print ("Output vertically stacked array:\n ", out_arr)
输出:
1st Input array: [1 2 3] 2nd Input array: [4 5 6] Output vertically stacked array: [[1 2 3] [4 5 6]]
代码2:
# Python program explaining
# vstack() function
import numpy as geek
# input array
in_arr1 = geek.array([[ 1, 2, 3], [ -1, -2, -3]] )
print ("1st Input array:\n", in_arr1)
in_arr2 = geek.array([[ 4, 5, 6], [ -4, -5, -6]] )
print ("2nd Input array:\n", in_arr2)
# Stacking the two arrays vertically
out_arr = geek.vstack((in_arr1, in_arr2))
print ("Output stacked array:\n ", out_arr)
输出:
1st Input array: [[ 1 2 3] [-1 -2 -3]] 2nd Input array: [[ 4 5 6] [-4 -5 -6]] Output stacked array: [[ 1 2 3] [-1 -2 -3] [ 4 5 6] [-4 -5 -6]]
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注:本文由纯净天空筛选整理自jana_sayantan大神的英文原创作品 numpy.vstack() 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。