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Python numpy.ix_()用法及代碼示例


numpy.ix_()函數根據多個序列構造一個開放網格。此函數采用N個一維序列,並返回N個輸出,每個輸出具有N個維度,因此,除了一個維度外,其他所有形狀均為1,並且具有非單位形狀值的維度在所有N個維度中循環。

用法: numpy.ix_(args)
參數:
args :[1-D sequences] Each sequence should be of integer or boolean type.
Return :[tuple of ndarrays] N arrays with N dimensions each, with N the number of input sequences. Together these arrays form an open mesh.

代碼1:

# Python program explaining 
# numpy.ix_() function 
  
# importing numpy as geek  
import numpy as geek 
  
gfg = geek.ix_([0, 1], [2, 4]) 
  
print (gfg)

輸出:

(array([[0],
       [1]]), array([[2, 4]]))


代碼2:

# Python program explaining 
# numpy.ix_() function 
  
# importing numpy as geek  
import numpy as geek 
  
arr = geek.arange(10).reshape(2, 5) 
print("Initial array:\n", arr)  
  
ixgrid = geek.ix_([0, 1], [2, 4]) 
  
print("New array:\n", arr[ixgrid]) 

輸出:

Initial array:
 [[0 1 2 3 4]
 [5 6 7 8 9]]
New array:
 [[2 4]
 [7 9]]

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注:本文由純淨天空篩選整理自sanjoy_62大神的英文原創作品 numpy.ix_() function | Python。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。