Storing function outputs to an array so they can be plotted

Hi,

Im new to MATLAB and am trying to get a for loop to save a range of outputted values so that i can then plot them against data i already have (Lambda). Any help would be greatly appreciated as im at a loss.

Currently my code only saves 1 value for A and 1 value for I.

my code is;

for A= 1,1:20; 
    H_l = 2*(A+1);   
    Sig_Lambda = 1*10^-9;
    I = A*H_l*Sig_Lambda 
end
plot(Lambda,I)

[Cris LaPierre]

I think there is a syntax error in your loop counter. Should it be this?

for A=1:1:20

Answer 1

[Torsten]

A = 1:20;
H_l = 2*(A+1);   
Sig_Lambda = 1*10^-9;
I = A.*H_l*Sig_Lambda;
plot(Lambda,I)

works if Lambda is a sorted 1x20 vector.

[Ethan Muir]

Thank you very much, i fixed my Lambda vector and got rid of the for loop and it works now. :)