Plotting a graph from for loops

My script:

 for temp=298:10:800
    u = (temp+2139.5)/4875;

   end   
 for u=0.5:0.001:0.6025
    Tp = 1/3*(1.57-0)*u*6000000*(0.16^3-0.08^3);

 end

I want to plot Tp against temp but cannot figure out how to.

Answer 1

[Star Strider]

You don’t need the for loops, since MATLAB can do the matrix calculations without them:

temp=298:10:800;
u = (temp+2139.5)/4875;
Tp = 1/3*(1.57-0)*u*6000000*(0.16^3-0.08^3);

figure(1)
plot(temp, Tp)
grid
xlabel('temp')
ylabel('Tp')

Does this do what you want?

[J122]

i cannot run that as i am getting 'Error in untitled2 (line 8) plot(temp,Tp)'

[Star Strider]

Copy and paste all my code to a page in your Editor and run it. (Or run it from the Command Window.)

It runs. I made sure of that before I posted it.

[J122]

I have done so, this is part of the error message: 'Attempt to execute SCRIPT plot as a function'

[Star Strider]

I have absolutely no idea what you are doing. Start with a completely new Editor tab, paste my code to it, and with that tab open, click on the green Run button in the Editor toolstrip at the top of the Editor window. That should work.