串联是指连接,此函数用于沿指定轴连接两个或多个相同维度的数组。该函数采用以下参数。
numpy.concatenate((a1, a2, ...), axis)
Sr.No. | Parameter & 描述 |
---|---|
1 |
a1,a2 .. 相同类型的数组序列 |
2 |
axis 必须沿其连接数组的轴。默认为0 |
import numpy as np a = np.array([[1,2],[3,4]]) print 'First array:' print a print '\n' b = np.array([[5,6],[7,8]]) print 'Second array:' print b print '\n' # both the arrays are of same dimensions print 'Joining the two arrays along axis 0:' print np.concatenate((a,b)) print '\n' print 'Joining the two arrays along axis 1:' print np.concatenate((a,b),axis = 1)
其输出如下-
First array: [[1 2] [3 4]] Second array: [[5 6] [7 8]] Joining the two arrays along axis 0: [[1 2] [3 4] [5 6] [7 8]] Joining the two arrays along axis 1: [[1 2 5 6] [3 4 7 8]]
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