Comparing matrices of different dimensions

I have 3 matrices, one is a 1x301 array,A, one is a scalar value,B, and the 3rd is 10x10x10 array,C. I need to be able to do: A-B/C.

I've tried it using meshgrid by doing: [An, Bn, Cn] = meshgrid(A,B,C) following it up by F = An - (Bn ./ Cn); so that a matrix can be output containing the values of the sum for each element.

I'm unsure whether this is the right method or the best way to go about it

[Image Analyst]

I'm not sure what you want to do. A has 301 values while C has a thousand values. In what way do you want to combine them? For example, what is the last element of F? The 301st? The 1000th? What elements of A and C would go into making up the last value of F? Please spell it out explicitly.

[mathman]

I want to calculate A-(B/C) for each element of each matrix and output the results of that calculation into another matrix, F.

For example:

A = [8 9 10] 
B = [28 45 48] 
C = [14 15 16] 

F = [6 6 7]

Something like that. The problem I'm having is making it so matrices of different dimensions can be compared.

The last element of F should be the 301st value.

Answer 1

[Image Analyst]

So what do you plan on doing with elements 302 - 1000 of C? Ignore them? And in what order do you plan on taking the first 301 elements of C?

lastElement = max([numel(A), numel(B), numel(C)]);
F = A(1:lastElement) - (B(1:lastElement) ./ C(1:lastElement));

this takes c in column major order.