How do I generate code Matlab to make my work easier

Hi, I hope you can help me for in this matter

i have a code to solve a problem and i want to change a value t and record the value of err

for example when t=0.1 , we get err=2.1542

when i change t=0.12, we get err=3.5475

when t=... we get err=......

So each

t=0.1, 0.12, 0.125, 0.1225,  0.13, 0.1345 ,.....0.15

Record how much the value of err to see plot(t,err) with t=[0.1 0.12 0.125 0.1225 ..0.15] and err=[2.1542; 3.5475; ...] Here is the problem record the value of err like a matrix

So how can write this ?

[David Hill]

Easy, what is the equation for err?

[Yamina chbak]

err is a norm L2: err=norm(abs(u_exact - u_num), 2). If i change the value of t, then u_num and u_exact are change

Answer 1

[Walter Roberson]

tvals = [0.1 0.12 0.125 0.1225, 0.15];
numt = length(tvals);
err = zeros(1, numt);
for tidx = 1 : numt
    t = tvals(tidx);
    calculate err into variable
    err(tidx) = appropriate result
end

plot(tvals, err)

[Yamina chbak]

Thanks you @Walter Roberson, It's working.

Thanks you again.