Take cartesian product between lists of tuples and a vector

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mrule
mrule el 30 de En. de 2015
Comentada: Mike Croucher el 4 de Abr. de 2023
I know matlab doesn't have tuples or vectors, but what I mean is say I have
A = [ 0 1 ; 2 3 ]
B = [ 4 5 ; 6 7 ]
C = [ 0 1 ]
I'd like to take the cartesian product of these items, like the "product" function from itertools in python.
product(A,B,C) =
[ 0 1 4 5 0;
0 1 4 5 1;
0 1 6 7 0;
0 1 6 7 1;
2 3 4 5 0;
2 3 4 5 1;
2 3 6 7 0;
2 3 6 7 1]
Is there a function in matlab that does this, accepting an arbitrary number of arguments? All the examples say "use meshgrid" which doesn't work in this case since that only takes the product of 2 or 3 vectors.

Respuesta aceptada

Matt J
Matt J el 30 de En. de 2015
Editada: Matt J el 30 de En. de 2015
Use ndgrid.
ma=size(A,1);
mb=size(B,1);
mc=size(C,1);
[a,b,c]=ndgrid(1:ma,1:mb,1:mc);
product = [A(a,:),B(b,:),C(c,:)]
product =
0 1 4 5 0
2 3 4 5 0
0 1 6 7 0
2 3 6 7 0
0 1 4 5 1
2 3 4 5 1
0 1 6 7 1
2 3 6 7 1
  2 comentarios
mrule
mrule el 30 de En. de 2015
Editada: mrule el 30 de En. de 2015
perfect!
Matt J
Matt J el 30 de En. de 2015
Great, then please do close the question with

Iniciar sesión para comentar.

Más respuestas (1)

saeed oveisi
saeed oveisi el 12 de Dic. de 2021

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