MATLAB: Looping for storing differet matrix in different rows but in same matrix.

Question

Hello everyone,

I have got a 3×2 cell "alpha_data" in which each cell consists of 1×79 matrixs in them (shown below Fig2). I want to get all these 1×79 matrixes in one matrix "Calculated_Data", so as to have a final matrix of 6×79. i.e. All data into one matrix with all individuals cell matrixs goes into one matrix different rows. I wrote this code but its only giving me one alpha_data{3,2} (Fig 1)data into "Calculated_Data" matrix

for i = 1:size(alpha_data,1) %size(alpha_data,1) = 3
    for j = 1:size(alpha_data,2) %size(alpha_data,1) = 2
        Calculated_Data = vertcat(alpha_data{i,j});
    end
end

The above code that I wrote is only giving one cell's data into final matrix.

Fig1. "Calculated_Data"only giving me one alpha_data{3,2} , but I need 6×79 (all data in the same matrix)

Fig 2. alpha_data: A 3×2 cell, each cell have 1×79 matrix

Any helps would be greately appreacited.

Answer 1

Before the loop, initiate

Calculated_Data=zeros(numel(alpha_data),numel(alpha_data{1,1}));
k=0;

within the loop, use

k=k+1;
Calculated_Data(k,:) = alpha_data{i,j};