How to multiply elements of a matrix by a number

Hi, I'm having a matrix of size X= [280,307,191] and i want to restore the matrix such that the 3rd dimension of the matrix is multiplied by '12'

Thank you

[Azzi Abdelmalek]

What do you mean?

[Rawan hamdi]

I have an image X of size 280x307x191 and i got the gradient to be A = gradient X (:,:,:) what i need to do is to multiply the gradient of the z dimension of the image by a constant eg. '12'

Answer 1

[Image Analyst]

You misunderstood the discussion in your prior question. Anyway, to do what you're asking for here (which is not what you really want):

A = 12 * A;

Why? Because, of course, every voxel has a Z value. I bet you're confused now, so better go back to your prior question and figure out what you really want to do.

Answer 2

[rimsha fazal]

Hi I have a case to multiply 2 by 2 matrix with a variable of 50000 elements. how can i do this?

w.*[Cm] it doesn't work.

[Image Analyst]

If you want a matrix multiplication do

theProduct = w * Cm
% or
theProduct = Cm * w