matlabreshape用法 matlab中的reshape

小爱给大家谈谈matlabreshape用法，以及matlab中的reshape应用的知识点，希望对你所遇到的问题有所帮助。

matlabreshape用法 matlab中的reshape

matlabreshape用法 matlab中的reshape

1、你可以使用reshape函数进行处理。

2、例子如下：A = 1:10;B = reshape(A,[5,2])该命令具体的用法可以用下面命令来查看：doc reshape下面是Matlab里面关于这个命令的解释：B = reshape(A,sz) reshapes A using the size vector, sz, to define size(B). For example, reshape(A,[2,3]) reshapes A into a 2-by-3 matrix. sz must contain at least 2 elements, and prod(sz) must be the same as numel(A).B = reshape(A,sz1,...,szN) reshapes A into a sz1-by-...-by-szN array where sz1,...,szN indicates the size of each dimension. You can specify a single dimension size of[] to he the dimension size automatically calculated, such that the number of elements in B matches the number of elements in A. For example, if A is a 10-by-10 matrix, thenreshape(A,2,2,[]) reshapes the 100 elements of A into a 2-by-2-by-25 array.下面是关于上面那个例子的解释：Reshape a 1-by-10 vector into a 5-by-2 matrix.A = 1:10;B = reshape(A,[5,2])B =1 62 73 84 95 10可以用reshap()，也可以直接“捋直”了。

3、为了清晰点，给你举个例子吧：a=[1,2;3,4;];b=a(:);c=reshape(a,[],1);得到的b,c都是一样的一维列向量。

4、reshape介绍：reshape函数重新调整矩阵的行数、列数、维数。

5、在matlab命令窗口中键入docreshape或reshape即可获得该函数的帮助信息。

6、用法：B = reshape(A,m,n)B = reshape(A,m,n,p,...)B = reshape(A,[m n p ...])B = reshape(A,...,[ ],...)B = reshape(A,siz)程序示例：close all; clear; clc;A = [1 2 3; 4 5 6; 7 8 9; 10 11 12] % 4 by 3B = reshape(A, 2, 6) % 2 by 6% C = reshape(A, 2, 4) % error% D = reshape(A, 2, 10) % errorE = reshape(A, 2, 3, 2) % 2 by 3 by 2注意：reshape函数对原数组的抽取是按照列抽取的（对原数组按列抽取，抽取的元素填充为新数组的列）。

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