MATLAB: Combine multiple if statements for something more compact

multiple ifsimplify code

Friends,
I'm trying to refine my code.It works fine but I have four if conditions which I want to make more efficient. Is there an alternative way to do it?
i=1;
  while (VMPH<=60)
      % Vehicle speed
      t(i+1) = t(i)+delt;
      Vmps(i+1) = Vmps(i)+((delt*(Facc(i)))/Vm);
      VMPH(i+1) = Vmps(i+1)/0.44704;
      % Vehicle forces
      Fr(i+1) = Fr(1);
      Fd(i+1) = 0.5*Af*Cd*(Vmps(i+1))^2;
      % Speed conditions
      ig(i+1) = 3.78;
      N(i+1) = Vmps(i+1)*io*ig(i+1)*60/(pi*Dt);
      if N(i+1) > 2150
          ig(i+1) = 2.06;
          N(i+1) = Vmps(i+1)*io*ig(i+1)*60/(pi*Dt);
      end
      if N(i+1) > 2150
          ig(i+1) = 1.58;
          N(i+1) = Vmps(i+1)*io*ig(i+1)*60/(pi*Dt);
      end
      if N(i+1) > 2150
          ig(i+1) = 1.21;
          N(i+1) = Vmps(i+1)*io*ig(i+1)*60/(pi*Dt);
      end
      if N(i+1) > 2150
          ig(i+1) = 0.82;
          N(i+1) = Vmps(i+1)*io*ig(i+1)*60/(pi*Dt);
      end
        % Power and performance
        Tao_b(i+1) = interp1(Speed,Torque,N(i+1));
        Tao_w(i+1)= Tao_b(i+1)*io*ig(i+1)*etadrive;
        Ft(i+1) = Tao_w(i+1)/Dt*2;
        Pb(i+1) = 2*pi*Tao_b(i+1)*N(i+1)/60;
        % Acceleration force
        Facc(i+1) = Ft(i+1)-Fd(i+1)-Fr(i+1);
        i=i+1;
     end
Thank You!

Best Answer

Maybe something like this:
IGVals = [3.78 2.06 1.58 1.21 0.82];
CurrentIG = 1;
i=1;
while (VMPH<=60)
 ...
      % Speed conditions
      ig(i+1) = IGVals(CurrentIG);
      N(i+1) = Vmps(i+1)*io*ig(i+1)*60/(pi*Dt);
      if N(i+1) > 2150
          CurrentIG = CurrentIG + 1;
          ig(i+1) = IGVals(CurrentIG);
          N(i+1) = Vmps(i+1)*io*ig(i+1)*60/(pi*Dt);
      end
          % Power and performance
  ...
Related Question