reshape(a, m, n)
a是一个含有m*n个元素的数组
如reshape(1:9, 3, 3)
findstr(str1, str2)
在str2中查找str1片段
如
b = [0111001000100110111];
a = length(findstr(01, b)
矩阵的翻转
flipud()
flip a matrix up to down.上下
a = reshape(1:9, 3 , 3)
>>a=[ 1 2 3
4 5 6
7 8 9]
>>flipup(a)
7 8 9
4 5 6
1 2 3
fliplr
flip a matrix left to right
fliplr(a)
>>3 2 1
6 5 4
9 8 7
rot90(a)
旋转90度
原文：http://www.cnblogs.com/jiangkejie/p/5815655.html