Overlapping graphs in figure

Here is part of my code. I'm ploting two graphs evaluating several polynomials , I use "delete(gca) and clf " at the begining of the code, but when I run the script with another vaules, I receive in figure(1) the last plot and the actual one.

i=0
figure(1)
hold on
for i=1:length(nodos)-1
plot([nodos(i):0.01:nodos(i+1)],polyval([Mx(:,:,i)],[nodos(i):0.01:nodos(i+1)]),'Color','b','LineWidth',2.5)
hold on
end
xlabel('Longitud de la Viga [m]') 
ylabel('Fuerza cortante[N]') 
yline(0)


i=0
figure(2)
for i=1:length(nodos)-1
    plot([nodos(i):0.01:nodos(i+1)],polyval([Vx(:,:,i)],[nodos(i):0.01:nodos(i+1)]),'Color','b','LineWidth',2.5)
    hold on
end
xlabel('Longitud de la Viga [m]') 
ylabel('Momento Flector [n*M]') 
yline(0)

[Image Analyst]

Well, we don't have nodos, Vx, and Mx so it's hard for us to reproduce your code or fix it. Please attach your variables in a .mat file with the paperclip icon after you read this:

TUTORIAL: How to ask a question (on Answers) and get a fast answer

To save your variables in a .mat file, do this:

save('answers.mat', 'nodos', 'Mx', 'Vx');

Answer 1

[Sulaymon Eshkabilov]

Here is a bit edited and corrected code:

figure()
for i=1:length(nodos)-1
plot([nodos(i):0.01:nodos(i+1)],polyval([Mx(:,:,i)],[nodos(i):0.01:nodos(i+1)]),'-','LineWidth',2.5)
hold on   % Different colored lines
end
xlabel('Longitud de la Viga [m]') 
ylabel('Fuerza cortante[N]') 
yline(0)

figure()
for i=1:length(nodos)-1
    plot([nodos(i):0.01:nodos(i+1)],polyval([Vx(:,:,i)],[nodos(i):0.01:nodos(i+1)]),'-','LineWidth',2.5)
    hold all   % % Different colored lines
end
xlabel('Longitud de la Viga [m]') 
ylabel('Momento Flector [n*M]') 
yline(0)

[Diego Núñez García]

Thank you, you solved my problem

[Sulaymon Eshkabilov]

You are most welcome!