How to generate a binary matrix with a fixed sum in rows and a changeable sum in columns?
4 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
Hello everyone !
i have a binary matrix (M,N) .I want to get sum equal to 1 in each row and in columns sum varies between [1 and 6], the sum of all matrix equal to M.
i will be grateful if you could help me
3 comentarios
Torsten
el 22 de Ag. de 2022
What about
[1 0
1 0
0 1
0 1
0 1
0 1]
?
Do you see how to construct one such matrix ?
Of course, you can permute the rows arbitrarily - the resulting matrix will still fulfill the requirements.
Respuestas (1)
Bruno Luong
el 21 de Ag. de 2022
Editada: Bruno Luong
el 21 de Ag. de 2022
A=kron(eye(5),ones(3,1));
A=A(randperm(end),randperm(end))
sum(A,1)
sum(A,2)
4 comentarios
Bruno Luong
el 22 de Ag. de 2022
Editada: Bruno Luong
el 22 de Ag. de 2022
The first line create the specific matrix that meet the row/column sum requirements.
The second line permutes rows and columns randomly, create a new random matrix, the sums are invariants under these operations, so the new matrix still meets the sum requirements.
Ver también
Categorías
Más información sobre Creating and Concatenating Matrices en Help Center y File Exchange.
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!