下标分配尺寸不匹配 [英] Subscripted assignment dimension mismatch

问题描述

在过去，这对我来说是一个微不足道的错误，但是我在这里看不到它.

This has been a fairly trivial error for me in the past, but I am not seeing it here.

 >> rmatrix = zeros(size(Rx,1), size(Rx,2));
 for k = 1:size(Rx,1)
     for l = 1:size(Rx,2)
         rmatrix(k,l) = [Rx(k,l).^2, (Ry(k,l)).^2];
     end
 end
??? Subscripted assignment dimension mismatch.

推荐答案

rmatrix(k,l) = [Rx(k,l).^2, (Ry(k,l)).^2];

您正在尝试将1x2矩阵分配给1x1矩阵

you're trying to assign a 1x2 matrix to a 1x1 matrix

也许您打算执行以下操作:

perhaps you intended to do the following:

rmatrix = zeros(size(Rx,1), size(Rx,2),2);
for k = 1:size(Rx,1)
    for l = 1:size(Rx,2)
        rmatrix(k,l,:) = [Rx(k,l).^2, (Ry(k,l)).^2];
    end
end

//edit:使用以下方法，您可以轻松得多:

//edit: which you could do a lot easier with:

rmatrix = cat(3,Rx,Ry).^2

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