MATLAB: Ordering answers to calculations with lowest first

mathematicsMATLABordering

Hi, I was wondering if there is a simple way to order answers to calculations in descending order. I have carried out around 16 similar calculations with numeric answers being output for each, however I'm trying to get them listed in order. Is this possible at all?

Thanks, Karen.

Best Answer

They are scalar values each? Then

sort([bestimage,rachelbook,sym8book2,sym8book4],'descend')

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MATLAB: How to generate matrices that satisfies constraints on sum of row elements and sum of column elements

New code with speficied target row and col sum, using FEX randfixesum and requires optimization toolbox

EDIT: new code no longer requires FEX

rs = [100; 200; 300] % target row sum
cs = [500, 100] % target column sum
if abs(sum(rs)-sum(cs)) > 1e-10*abs(sum(rs))
    error('sum(rs) must be equal to sum(cs)'); 
end
% This part need to be done once if rs and cs are unchanged
m = length(rs);
n = length(cs);
I = zeros(m,n);
I(:) = 1:m*n;
Aeq = accumarray([repmat((1:m)',n,1) I(:); repelem(m+(1:n)',m,1) I(:)],1);
beq = [rs(:); cs(:)];
lb = zeros(m*n,1);
ub = inf(m*n,1);
B = zeros(m*n);
for k=1:m*n
    f = accumarray(k, 1, [m*n 1]);
    B(:,k) = linprog(f, [], [], Aeq, beq, lb, ub);   
end
% This part generate new random A 
x=-log(rand(m*n,1)); x=x./sum(x);
% x = randfixedsum(m*n,1,1,0,1); % Fex
A = reshape(B*x,[m n])
% Check
sum(A,2) % ~ rs
sum(A,1) % ~ cs

MATLAB: For loop is not iterating through images

img = dir('*png') ; 
N = length(img) ;   % edited 
for i = 1:N
    I = imread(img(i).name)
    % do what you want
end

Best Answer

Related Solutions

MATLAB: How to generate matrices that satisfies constraints on sum of row elements and sum of column elements

MATLAB: For loop is not iterating through images

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