How to do calculations with variables of different size?

I have two signals- sample and reference, each described by a list of data sets made up of complex number. As I am trying to obtain a optical parameter out of this information, I have to first express a function where it is a ratio of sample over the reference. From there, I had come out with r_mag and r_ang as the magnitude and phase of the ratio respectively. And both r_mag and r_ang are double variables have size of 947 x1. So, I went on to do my calculation for abp_1 and abp_2 as shown in the code below. And that is when I got a size of 947 x 947 for abp_3 as a double. And I encountered an error calculating abp_f. I think it has something to do with the size of the variable. However, I do not know how to resolve this problem. (As I thought the size of abp_3 is going to be 947 x1 as I thought one long list of data multiply with another similar list will produce another similar list.)

abp_1= (4*pi*frequency*(1E12)/(3E8));

abp_2=(2*r_mag*sin(r_ang));

abp_3=(1+(r_mag*r_mag)-(2*r_mag*cos(r_ang)));

 abp_f= (abp_1)*((abp_2))/(abp_3);

Can anyone kindly advice me what to do? Any help will be deeply appreciated. Thank you!

[Rik]

I suspect that you actually mean element-wise multiplication and division, instead of matrix multiplication and division. If so: replace every '*' with '.*' and every '/' with './'.

[Minnie]

Hi Rik! It works. Thank you so much!