清空筛选条件
清空筛选条件

reshape with a huge matrix

2 次查看（过去 30 天）
Rica
Rica 2012-11-12
my matrix is constructed like this: A=[118*9| 118*9| 118*9|118*9|......]
i have a problem using reshape and mean function:
i want to make the mean for each block (118*9) using mean(matrix,2) tp get mean_A=118*9 n times.
i thought i should reashape my matrix in this form:
% reshaped=
[118*9
118*9
118*9
.
.
.
]
and then use the mean. i did Not get it. could you help:
i want to get matrix like this

请先登录，再回答此问题。

采纳的回答

José-Luis
José-Luis 2012-11-12
arrayfun(@(x) {mean(data(x,:),2},index,'uniformoutput',false);
  2 个评论
Daniel Shub
Daniel Shub 2012-11-13
Clearly Rica liked your answer, but I have no idea what you are doing. What are some sample data and index?
José-Luis
José-Luis 2012-11-13
I had answered one of Rica's previous questions so I took a guess at what she (he) meant.

请先登录，再进行评论。

更多回答（1 个）

Daniel Shub
Daniel Shub 2012-11-12
I am not sure what you mean by your notation. Is this what you are looking for?
n = 10;
x = repmat(1:(118*9), 1, n);
y = reshape(x, 118*9, n);

类别

在 Help Center 和 File Exchange 中查找有关 Resizing and Reshaping Matrices 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by