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== 函数 == === take === 取出矩阵的几行或几列 |
::-- flyaflya [DateTime(2005-08-07T02:30:26Z)] TableOfContents
1. Numerical Python
1.1. 简介
提供对序列（主要是矩阵)的快速操作
1.2. 例子
>>> import Numeric as N
>>> a = 0,0,1,1,0],[1,1,0,0,1],[0,0,1,0,1
>>> N.where(a, 100,99)
array([[ 99, 99, 100, 100, 99],
- [100, 100, 99, 99, 100], [ 99, 99, 100, 99, 100]])
1.3. 函数
1.3.1. take
取出矩阵的几行或几列