Insert numeric values (rx1 matrix) inside a cell

Hi. I would like to insert a column of 100:

rep = repmat(100,157,1);

inside the first cell (see image) so that 157x2 becomes 157x3.

The third column represents "rep".

How can I do this?

[Stephen23]

A simpler, more versatile approach is given here:

https://www.mathworks.com/matlabcentral/answers/1875717-merge-nx3-double-matrices-present-within-a-3x1-cell#comment_2511967

Answer 1

[Arif Hoq]

a=randi(100,157,2);
b=randi(200,189,2);
c=randi(300,183,2);
mat={a;b;c} % making a cell array 

mat = 3×1 cell array
    {157×2 double}
    {189×2 double}
    {183×2 double}

% rep = repmat(100,157,1);
mat3={[mat{2,1} repmat(100,size(mat{2,1},1),1)]};  
for i=1:size(mat,1)
    aaa(i)={[mat{i,1} repmat(100,size(mat{i,1},1),1)]};
end
output=aaa'

output = 3×1 cell array
    {157×3 double}
    {189×3 double}
    {183×3 double}

[Alberto Acri]

Thank you for the answer. I don't want to insert the same value 100 to all cells.

At the first cell (157x2) I need to insert the third column of all 100.

At the second cell (189x2) I need to insert the third column of all 150.

At the third cell (183x2) I must insert the third column of all 200.

[Arif Hoq]

tyr this:

a=randi(100,157,2);
b=randi(200,189,2);
c=randi(300,183,2);
mat={a;b;c}; % making a cell array 
% rep = repmat(100,157,1);
% mat3={[mat{2,1} repmat(100,size(mat{2,1},1),1)]};  
for i=1:size(mat,1)
    if i==1
        aaa(i)={[mat{i,1} repmat(100,size(mat{i,1},1),1)]};
    elseif i==2
        aaa(i)={[mat{i,1} repmat(150,size(mat{i,1},1),1)]};
    elseif i==3
        aaa(i)={[mat{i,1} repmat(200,size(mat{i,1},1),1)]};
    end
end
output=aaa';