Vector addition with 2-dim array
1 Ansicht (letzte 30 Tage)
Ältere Kommentare anzeigen
A is an R by C (R x C) array and I have a rows vector V with length C. I want to add or subtract V from every rows in the array A.
Is there any way to simplify this procedure?
Of course I know some method like:
VV = V(onese(1:R), :)
result = A +/- VV;
but I just wanted an one-line command or operator, like:
result = A ※ V
result = somefunction(A, V);
I need to find ※ or somefunction()
1 Kommentar
Jan
am 21 Mär. 2013
ones(1:R) creates a matrix with R dimensions and prod(1:R) elements. You mean ones(1, R).
The one-line command might have the advantage, that the matrix VV is not created explicitly:
result = A - v(ones(R,1), :);
Akzeptierte Antwort
Weitere Antworten (1)
Siehe auch
Kategorien
Mehr zu Matrices and Arrays finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!