MATLAB: Going from 1 x n to n x n matrix

repmat

How doe I convert a matrix with 100 elements in a 1×100 matrix to a 100×100 matrix. Each row in the 1xn matrix will have the same values in rows 2, 3, 4, 5 etc to 100

Best Answer

repmat(A,100,1)

where A is your vector.

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MATLAB: N(x)

CODE1)

a=[0 1];                % you tell MATLAB a is a vector
for r=3:100             % the for loop you understand, right?
    a(r)=(r-1)+(r-2);   % you're attributing to the rth term of your vector a values of (r - 1) + (r - 2)
                        % the 1st iteration will be a(3) = (3 - 1) + (3 - 2); a(4) = (4 - 1) + (4 - 2); so on...
end

disp(a)

CODE2)

a=[0 1];                %from this line, a(1) = 0 and a(2) = 1.
for r=3:100 
    a(r)=a(r-1)+a(r-2); % the difference between this and code 1) is that you're performing
                        % the summation calling the indexes in the vector a, rather than r values.
                        % so a(3) = a(2) + a(1) = 0 + 1 = 1
                        % In code 1, a(3) = 2 + 1 = 3
end
disp(a)

Code 3) is the same as 2) Walter mentioned.

Hope that helps...

Cheers

MATLAB: Initialize a multidimensional matrix

N=6;
m=4;
A=zeros(repmat(m,1,n));

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MATLAB: N(x)

MATLAB: Initialize a multidimensional matrix

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