如何在Matlab中创建矩阵的句柄/指针数组? [英] How can I create an array of handles / pointers to matrices in Matlab?

问题描述

我有一堆不同大小的相关矩阵，希望能够逐步访问它们.有没有一种简单的方法可以在Matlab中创建指向这些矩阵的句柄或指针的矢量?还是这不是我应该做的方式?

I have a bunch of related matrices of different sizes, and would like to be able to incrementally access them. Is there an easy way to create a vector of handles or pointers to these matrices in Matlab? Or is this not the way I am supposed to do it?

例如，在这里我想分配给索引为i的向量，这将是不同大小的矩阵的句柄.

For example, here I want to assign to the vector indexed with i, which will be a handle to the matrices of different size.

rows = [1:6];
columns = [10:2:20];
for i=1:6
    vector_of_pointers(i) = ones(rows(i),columns(i));
end

推荐答案

在Matlab中，实际上并没有指针.

In Matlab, there aren't really pointers.

相反，您可以像这样将单元格中的数组收集起来

Instead, you can collect the arrays in a cell array, like so

rows = [1:6];
columns = [10:2:20];
for i=1:6
    arrayOfArrays{i} = ones(rows(i),columns(i));
end

要访问例如数组3，请写arrayOfArrays{3}，如果只希望它的第二行，请写arrayOfArrays{3}(2,:).

To access, say, array #3, you write arrayOfArrays{3}, and if you want its second row only, you write arrayOfArrays{3}(2,:).

您还可以使用 ARRAYFUN

arrayOfArrays = arrayfun(@(u,v)ones(u,v),rows,columns,'uniformOutput',false)

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