2D line graph plotting from calculations

while s >= stop_height

t = sqrt(2*h/g)

s = u*t + 0.5*a*t*t;

bounce_height = COR*COR*h

h = bounce_height;

end

plot(bounce_height,t)

I am very new to matlab, I understand how you plot when you can choose the data points but am really unsure on how i can plot the above while loop onto a 2d line graph. PS all variabled declared earlier and werent important so I didnt include them. Any help would be amazing. Thanks in advance

Answer 1

[Cris LaPierre]

Right now, each loop replaces the previous variable values with the new values. Insteach, you need to capture the result of each loop, building up a vector. Once the loop ends, you would plot the vector.

This approach adds the new values to the bottom of a vector.

bounce_height = [];
T = [];
while s >= stop_height
    t = sqrt(2*h/g);
    s = u*t + 0.5*a*t*t;
    h = COR*COR*h;
    bounce_height = [bounce_height;h];
    T = [T;t];
end
plot(bounce_height,T)

[Dean Morris]

Thank you for your reply, could you also tell me how i can change the axis data cause when i try to do it i get an error saying.

Error using plot

Vectors must be the same length.

This is the code that made that error

bounce_height = [0:5:50]

[Cris LaPierre]

Don't fill in the vectors. They are intentionally empty. This creates the variables so that, in the first loop, you can append the new values.

Answer 2

[Star Strider]

There are too many missing variables for me to run the code, however consider doing something like this:

k = 1;                                              % Counter Variable
while s >= stop_height
    t = sqrt(2*h/g)
    s = u*t + 0.5*a*t*t;
    bounce_height = COR*COR*h
    h = bounce_height;
    hv(k) = h;
    tv(k) = t;
    k = k + 1;
end

figure
plot(hv, tv)
grid

That sortes the results in two variable vectors to plot later.