MATLAB: Plotting all iterations on a single graph?

[plexus0208]

I want to plot r vs. Total_thrust for all iterations on a single graph. I'm using 'hold on;' but it is still only plotting the last iteration. Help?

-------------------MATLAB CODE----------------------------------
Thrust = (mdot19*c19 + mdot9*c9)/gc; %Note: This is for one engine

if(imag(Thrust) == 0 ),
Total_thrust(i) = Thrust*2; %in lbf
SFC(i) = (mdotf/Thrust)*3600; %in (lbm/hr)/lbf
r(i) = radius_inlet;
i = i+1;
end

radius_inlet = radius_inlet + .1;

end

Tt4 = Tt4 + 30;
plot(r,Total_thrust);
hold on;

end

 

[MATLABdude]

Unless there's some additional code that's not included here, you seem to have some superfluous end statements. If you go through the hold route, you generally want to make sure that the plot data iterates several times (otherwise, it's useless).

F'r instance:

%Sine plotter
t=0:0.01:2*pi;
hold on
for n=1:1:5
	plot(t, sin(n*t));
end
hold off;