MATLAB: Using a variable value as linear array index

array indexingarrays

Can you use a variable as an array index? for example: C = 200 – 30

then use C as the linear index for the array.

B(C)

This just multiplies B by C. Can you tell the program to just use the value of C?

Yes

B(C)

will use C to index into B, it doesn't multiply at all.

Surely you could just try this out on the command line, it is how I learned a lot of what I know!

ii = 475000;
m = size(A,1);
r = rem(ii,m);
c = ceil(ii/m);

Instead of

A(B)

try

A.*B