Getting the ratio of consecutive links in network using loop.

I have two variables

A: 1 2 3 4 5 6 7 8 9

B: 2 10 5 8 12 6 14 6 2

I want to get the ratio of Bn/Bn-1 such that for A=1 is ratio is none, A=2 is B2/B1, A=3 is B3/B2 and so on.

Can anyone tell me how to do this in loop?

Thank you

Answer 1

[Voss]

A = 1:9; % unused

B = [2 10 5 8 12 6 14 6 2];

B_ratio = [NaN B(2:end)./B(1:end-1)] % no loop necessary

B_ratio = 1×9

NaN 5.0000 0.5000 1.6000 1.5000 0.5000 2.3333 0.4286 0.3333

[Niraj Bal Tamang]

Thank you so much. It gave "Dimensions of arrays being concatenated are not consistent." error first. then, I added semi colon after NaN and it fixed the error.

[Voss]

That means your B is a column vector (mine was a row vector). In any case, glad you got it working!