Combination of X and Y vectors to get all possible positions on a Cartesian plane

22 vues (au cours des 30 derniers jours)
Dear Community,
I have a challenging task that I am not able to solve so far: I have a vector X of 'n' elements (in my case those are X coordinates) and I have another vector Y of 'm' elements (in my case Y coordinate). I just want to creat a new vector Z with n*m rows and 2 colums that lists within all possible combinations of points on the XY Cartesian plane.
Example:
X=1,2,3,4 (n=4)
Y=5,6 (m=2)
then Z= 1,5 1,6 2,5 2,6 3,5 3,6 and so on....

Réponse acceptée

James Tursa
James Tursa le 20 Mai 2019
[XX,YY] = ndgrid(X,Y);
Z = [XX(:),YY(:)];
  1 commentaire
Maximilian Arpaio
Maximilian Arpaio le 20 Mai 2019
Thanks a lot James.
Actually, surfing better among the already available answers (my fault sorry) I've also found:
[A,B] = meshgrid(X,Y);
c=cat(2,A',B');
Z=reshape(c,[],2);
coming from this post: LINK

Connectez-vous pour commenter.

Plus de réponses (1)

Jos (10584)
Jos (10584) le 21 Mai 2019
For two vectors, x and y, this might be faster than ndgrid (not tested)
xy = [repelem(x(:), numel(y), 1) repmat(y(:), numel(x), 1)]

Catégories

En savoir plus sur Matrix Indexing dans Help Center et File Exchange

Produits


Version

R2017b

Community Treasure Hunt

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

Start Hunting!

Translated by