Can I multiply a Vector with a Matrix?

68 visualizaciones (últimos 30 días)
Edoardo
Edoardo el 29 de Oct. de 2012
Hi;
Sorry for my english. I've a big problem, I want multiply a vector by a matrix:
ES: A=< 1x1250 double >; B= is a matrix < 421x421 double >;
C=A*B; ??? Error using ==> Inner matrix dimensions must agree
or if
C=A.*B; ??? Error using ==> times Matrix dimensions must agree.
Please help me!!! Thanks
  1 comentario
Matt J
Matt J el 29 de Oct. de 2012
Editada: Matt J el 29 de Oct. de 2012
What are the dimensions of B and do you want element-wise multiplication C(i)=A(i).*B(i) or do you want matrix-sense multiplication?

Iniciar sesión para comentar.

Respuesta aceptada

Jan
Jan el 29 de Oct. de 2012
In the expression A*B the number of columns of A must equal the number of rows of B.

Más respuestas (1)

Matt J
Matt J el 29 de Oct. de 2012
In the expression A.*B, the matrices A and B must have the same number of rows and columns.

Categorías

Más información sobre Resizing and Reshaping Matrices en Help Center y File Exchange.

Etiquetas

Community Treasure Hunt

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

Start Hunting!

Translated by