matlab中的矩阵矩阵

Question

我需要建立矩阵矩阵.说,$1\leq i,j\leq n$我必须定义一个矩阵$p_{ij}$,它将是一个矩阵$n\times n$.我能做什么-这是建立一个矩阵$P$是$n^2\times n^2$-但$n=20$没有有关内存出错.

你能告诉我如何解决这个问题吗？

Answer 1

使用单元格数组.像这样

c = cell(3,3) %Create cell array of size *3x3*

c = 

    []    []    []
    []    []    []
    []    []    []

c{1,1}; = rand(3,3); %Set cell {1,1} to be random matrix of size *3x3*
c{1,2} = ones(4,6)   %Set cell {1,2} to be matrix of ones size *4x6*

c = 

    [3x3 double]    [4x6 double]    []
              []              []    []
              []              []    []

等等..