Numpy随记

遇到有关numpy的东西就记下来，方便以后参考：

numpy tile

tile(A,reps)
重复A reps 次来创建新数组

numpy transpose

http://blog.csdn.net/rumswell/article/details/7317831

array([0,1,2])是列向量，array([[ 0,1,2 ]] )是行向量