Python模块NumPy中的tile(A，rep) 函数

from NumPy import *

 

函数形式： tile(A，rep) 

功能：重复A的各个维度 

参数类型： 

- A: Array类的都可以 

- rep：A沿着各个维度重复的次数

 

这个英文单词的本意是：贴瓷砖，还挺形象的。

 

举例：

tile([17,29],2)，如果rep参数是一个整数，则表示重复A中的元素rep次，即行数（即维度）只有1维，所以2的意思是在“列”这个维度上重复2次

输出[17,29,17,29]

 

tile([29,17],(3,5))

此时的(3,5)和[3,5]是相同的效果。

结果是3组，每组重复5次，也可以理解为二维表，3行，5列。先分3组（重复3次），每组重复5次。

array([[29, 17, 29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17, 29, 17]])

 

tile([29,17],[3,5,7])

结果是3组，每组一个二维表，每个二维表5行，7列，可以理解为三维表

array([[[29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17]],

 

[[29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17]],

 

[[29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17, 29, 17]]])

 

tile([29,17],[3,5,7,4])

结果是4组，怎样理解？我也不知道，这已经超过了人类空间的认知。

依次分组，先分3组重复，然后分5组重复，然后分7组，最后重复4次。

如果5维会怎样？也是继续按组重复下去。先分5组，用中括号分隔。

array([[[[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17]],

 

[[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17]],

 

[[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17]],

 

[[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17]],

 

[[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17]]],

 

 

[[[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17]],

 

[[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17]],

 

[[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17]],

 

[[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17]],

 

[[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17]]],

 

 

[[[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17]],

 

[[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17]],

 

[[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17]],

 

[[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17]],

 

[[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17],

[29, 17, 29, 17, 29, 17, 29, 17]]]])