如何在numpy中創建2D「rect」數組（1的方塊，否則爲0）？

Question

什麼是創建2D numpy的「矩形」陣列，等的「正確」的方式：

0000000000000000000 
0000000000000000000 
0000000000111110000 
0000000000111110000 
0000000000111110000 
0000000000000000000 

即，其具有一定範圍內的給定值時，或否則爲零數組？

Answer 1

只需創建一個零數組並將您想要的區域設置爲一個。

E.g.

import numpy as np 
data = np.zeros((6,18)) 
data[2:5, 9:14] = 1 
print data 

這產生了：

[[ 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.] 
[ 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.] 
[ 0. 0. 0. 0. 0. 0. 0. 0. 0. 1. 1. 1. 1. 1. 0. 0. 0. 0.] 
[ 0. 0. 0. 0. 0. 0. 0. 0. 0. 1. 1. 1. 1. 1. 0. 0. 0. 0.] 
[ 0. 0. 0. 0. 0. 0. 0. 0. 0. 1. 1. 1. 1. 1. 0. 0. 0. 0.] 
[ 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.]]