MATLAB: Create number of arrays dynamicly

arraycell arraycell arraysdynamic arraymatrix arrayworkspace

i have a matrix of [m,n], i want to create m arrays and store those m rows into those m arrays. any way of doing that? example: a=[1 2 3 4;5 6 7 8;9 10 11 12] this matrix has 3 rows so i want to create three arrays(A1,A2,A3) and store A1=[1 2 3 4] A2=[5 6 7 8] A3=[9 10 11 12] thanks in advance

Best Answer

Don't do that.

http://matlab.wikia.com/wiki/FAQ#How_can_I_create_variables_A1.2C_A2.2C....2CA10_in_a_loop.3F

a_by_row = mat2cell(a, ones(1,size(a,1)), size(a,2));

now a_by_row{K} is the K'th row . You do not need one variable per row.

Related Solutions

MATLAB: Creating matrix w.r.t. rows number of another matrix

E.g., a method using a cell array

u = unique(col_row(:,1));
n = numel(u);
result = cell(max(u),1);
for k=1:n
    result{u(k)} = data(col_row(col_row(:,1)==u(k),2));
end

This assumes that all of the "row" numbers are positive integers. If they are not, then one could do this instead

u = unique(col_row(:,1));
n = numel(u);
result = cell(n,1);
for k=1:n
    result{k} = data(col_row(col_row(:,1)==u(k),2));
end

MATLAB: How to put each two elements in a matrix in a cell

Well, it's important to use proper formatting in your question. Stephan answered your original question according to the way it was formatted.

After your edit, it's still the same concept, use mat2cell. Read its documentation to learn how it works. In your case,

A= [ 1 2 3 4; 5 6 7 8; 9 10 11 12] 
B = mat2cell(A, ones(1, size(A, 1)), ones(1, size(A, 2)/2) * 2)

Best Answer

Related Solutions

MATLAB: Creating matrix w.r.t. rows number of another matrix

MATLAB: How to put each two elements in a matrix in a cell

Related Question