# plot in same graph from a loop

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samuel herrera on 17 Nov 2021
Answered: Prateek Rai on 21 Nov 2021
G = 10*10-9;% conductividad
l = 1*10^-3;
c = 10*10^-9;
u = 4*pi*10^-7;
e = (l*c)/u;
g = (u*G)/l;
vs = 1;
f = [60 1000];
zs = 50;
long = 100;
x = 0:0.1:100;
%condicione de la carga
zl = -1.2839j;
for ii=1:length(f)
w(ii) = 2*pi*f(ii);
z0(ii) = ((1j*w(ii)*l)/(g+1j*w(ii)*c))^(1/2);
prop(ii) = (1j*w(ii)*l*(g+1j*w(ii)*c))^(1/2);
A{ii} = [(z0(ii)+zs),(z0(ii)-zs);(z0(ii)-zl)*exp(-prop(ii)*long),(z0(ii)+zl)*exp(prop(ii)*long)];
ainv{ii} = inv(A{ii});
vo{ii} = ainv{ii}*[z0(ii)*vs;0];
vp1{ii} = vo{ii}(1);
vp2{ii} = vo{ii}(2);
end
vp=cell2mat(vp1);
vn=cell2mat(vp2);
for r=1:length(vp)
vt(ii)=abs(vp(ii)*exp(-prop*x)+vn(ii)*exp(prop*x));
plot(x,vt(ii))
end
how can i plot the answears for vt(ii) in the same plot? thanks a lot
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### Answers (1)

Prateek Rai on 21 Nov 2021
Hi,
You can try "hold on" to retain current plot when adding new plot.
Refer to hold MathWorks documentation page to learn more on retaining current plot when adding new plot.
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