如何遍历 MATLAB 中 n 维矩阵中的每个元素? [英] How do I iterate through each element in an n-dimensional matrix in MATLAB?

问题描述

我有问题.我需要遍历 MATLAB 中 n 维矩阵中的每个元素.问题是，我不知道如何对任意数量的维度执行此操作.我知道我可以说

I have a problem. I need to iterate through every element in an n-dimensional matrix in MATLAB. The problem is, I don't know how to do this for an arbitrary number of dimensions. I know I can say

for i = 1:size(m,1)
    for j = 1:size(m,2)
        for k = 1:size(m,3)

等等，但是有没有办法对任意数量的维度进行处理?

and so on, but is there a way to do it for an arbitrary number of dimensions?

推荐答案

您可以使用线性索引来访问每个元素.

You can use linear indexing to access each element.

for idx = 1:numel(array)
    element = array(idx)
    ....
end

如果您不需要知道 i,j,k 所在的位置，这将很有用.然而，如果你不需要知道你在什么索引，你可能最好使用 arrayfun()

This is useful if you don't need to know what i,j,k, you are at. However, if you don't need to know what index you are at, you are probably better off using arrayfun()

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