My matlab code is only returning first output

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Oskar Strömberg
Oskar Strömberg 2020-4-23
评论： Stephen23 2020-4-23
So my code here is only returning the first ouput voltage and is also saving it as ans in workshop instead of voltage, I want it to return all three outputs by their name and save them into workshop but I can't figure out what's wrong?
function [voltage, current, evarde] = kretsen2;
U0 = 220;
U = U0;
I0 = 0;
I = I0;
u0 = [I0;U0];
u = u0;
C = 0.5*(10^-6);
L0 = 0.7;
t = 2*pi*sqrt(L0*C);
%t = 0.01;
f = @(t,u) [u(2)/(L0*((1^2/(u(1)^2+1^2))));-u(1)/C];
n = 1000
h = t/n;
listX = 0
listY = u'
for x = 0:h:t-h
k1 = f(x,u);
k2 = f((x+h)/2,u + (h/2)*k1);
k3 = f((x+h)/2,u + (h/2)*k2);
k4 = f(x+h,u + h*k3);
u = u + (h/6)*(k1+2*k2+2*k3+k4);
listX = [listX;x];
listY = [listY;u'];
end
current = listY(:,1);
voltage = listY(:,2);
evarde = (1/2)*C*voltage.^2 + (1/2)*L0*log(1+current.^2);
figure
plot(listX,current)
title("current")
figure
plot(listX,voltage)
title("voltage")
figure
plot(listX,evarde)
title("E(t)")
end

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Stephen23
Stephen23 2020-4-23
编辑：Stephen23 2020-4-23
You need to call the function with all three outputs, e.g.:
[Vout, Iout, E] = kretsen2();
Very basic MATLAB concepts, such as how to call functions with multiple output arguments, are explained in the introductory tutorials:
https://www.mathworks.com/help/matlab/getting-started-with-matlab.html
  2 个评论
Stephen23
Stephen23 2020-4-23
"That's exactly what I did though"
Did it work then? If not, please explain how you are checking if the variables are that workspace.

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