How to create a for loop for this?

I haven't worked with for loops in a while and can't remember how to set up the for loop for what I'm trying to do. I have an vector, "w", of values and I want to find the difference between values. How would I set up a for loop to do what I did in the last section in my code where I find dw1 through dw3?

Answer 1

[Voss]

No loop is necessary; you can use diff (see below).

n = 4;
startFrequency = 0.25;
endFrequency = 1;
frequencies = linspace(startFrequency,endFrequency,n);

w = 2*pi*frequencies;

% no loop necessary:
dw = diff(w)

dw = 1×3

1.5708 1.5708 1.5708

% if you want to use a loop anyway, here's one:
for ii = 1:n-1
    dw(ii) = w(ii+1)-w(ii);
end
dw

dw = 1×3

1.5708 1.5708 1.5708

[Michaela Byrne]

Thank you!

[Voss]

You're welcome!