how to start with 0 (zero) in for loop?

for i = 1:n_slice
    x(i) = i*deltar;
    R(i) = x(i)+rb;

     % Evaluate the pressure angle at Ri
     theta(i) = acos(rb/R(i));
     %Evaluate the involute angle at Ri
     inv_ang(i)= tan(theta(i))-theta(i);

     % Evaluate the Circular Tooth Thickness at Ri
     ctt(i) = (2.*R(i))*((0.5*cptt/rp) + theta_pitch - inv_ang(i));

     B = 0.5*(ctt(i)/R(i));

     %Eventually, Coordinates might be evaluated
     X(i) = R(i)* sin(B);
     Y(i) = R(i)* cos(B);

     plot(X(i),Y(i),'-r',X(i),Y(i),'+b','LineWidth',2,'MarkerSize',3)
     plot(-X(i),Y(i),'-r',-X(i),Y(i),'+b','LineWidth',2,'MarkerSize',3)
  end

WHEN I START WITH 0 (ZERO) IT GIVES ERROR. BUT I NEED TO START WITH ZERO NOT 1 !!!

[Walter Roberson]

WHY DO YOU NEED TO START WITH ZERO NOT 1 !!!

[Ender Rencuzogullari]

my amateurship

Answer 1

[Thorsten]

Use

for i = 1:n_slice+1
  x(i) = (i-1)*deltar;

[Ender Rencuzogullari]

but I wonder why matlab does not allow to start from 0? and is there any different way to do it?