Effacer les filtres
Effacer les filtres

I WANT TO CREATE MATRIX COMBINATION

1 vue (au cours des 30 derniers jours)
ARBAZKHAN PATHAN
ARBAZKHAN PATHAN le 6 Jan 2023
e.g. A = [1 2 3] B = [4,5,6]
I want the new matrix c to be
C = [1 3; 1 5; 1 6; 2 4; 2 5; 2 6; 3 4; 3 5; 3 6]

Réponse acceptée

Karim
Karim le 6 Jan 2023
% setup the original data, note the shape!
A = [1;2;3];
B = [4;5;6];
% create the combinations
C = [ repmat(A,numel(B),1) reshape( repmat(B',numel(A),1),[],1) ]
C = 9×2
1 4 2 4 3 4 1 5 2 5 3 5 1 6 2 6 3 6

Plus de réponses (1)

Dyuman Joshi
Dyuman Joshi le 6 Jan 2023
A = [1 2 3];
B = [4 5 6];
nA=numel(A);
nB=numel(B);
%If you have Stats and ML Toolbox
y=fullfact([nA nB]);
C=[A(y(:,2));B(y(:,1))]'
C = 9×2
1 4 1 5 1 6 2 4 2 5 2 6 3 4 3 5 3 6
%otherwise
z=dec2base(0:nA*nB-1,max(nA,nB))-47;
D=[A(z(:,1))' B(z(:,2))']
D = 9×2
1 4 1 5 1 6 2 4 2 5 2 6 3 4 3 5 3 6
%another method using ndgrid
n=2; %two inputs A and B
[E{flip(1:n)}]=ndgrid(B,A);
reshape(cat(n,E{:}),'',n)
ans = 9×2
1 4 1 5 1 6 2 4 2 5 2 6 3 4 3 5 3 6

Catégories

En savoir plus sur Matrices and Arrays dans Help Center et File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by