No Line in my plot its just dots

This is my finished work buy it just shows the dots not the line, how can I display it?

x=0.5;

n=5;

i=0;

f=0;

while i<n || i==n

f= f+(x.^i)/factorial(i);

i=1+i;

f_o=exp(x);

y=(f_o-f)*100/f_o;

disp(['Term ',num2str(i), ' The error is ',num2str(y,'%.4f'),'%']);

plot(f,y,'*r','LineWidth',1)

hold on

grid on

end

Thank you

Answer 1

[Star Strider]

One approach is to create two new vectors from ‘f’ and ‘y’ and plot them after the loop:

x=0.5;   
n=5;  
i=0;
f=0;
while i<n || i==n
    f= f+(x.^i)/factorial(i);
    i=1+i;
    f_o=exp(x);
    y=(f_o-f)*100/f_o;
    disp(['Term ',num2str(i), ' The error is ',num2str(y,'%.4f'),'%']);
    fv(i) = f;
    yv(i) = y;
end

figure
plot(fv,yv,'-*r','LineWidth',1)
hold on
grid on

.

Answer 2

[Steven Lord]

Star Strider's approach is the one I'd probably use if all I cared about what that the line was plotted, not necessarily when it was plotted.

But if you need each point to appear in its corresponding iteration of the loop, create an animatedline prior to the loop and addpoints to it.

x = 0:360;
y = sind(x);
h = animatedline;
axis([0 360 -1 1])
for whichPoint = 1:numel(x)
    addpoints(h, x(whichPoint), y(whichPoint))
end