Info

Questa domanda è chiusa. Riaprila per modificarla o per rispondere.

Why aren't my cases working correctly

1 visualizzazione (ultimi 30 giorni)
Caprice Corlew
Caprice Corlew il 3 Ott 2014
Chiuso: MATLAB Answer Bot il 20 Ago 2021
I made an if esleif else statement and a switch menu to plot the graphs but I cannot get the graphs to plot correctly. could someon hep me fix it? Its alot, sorry
switch answer case 1
period=1/frequency;
t=0:period*cycles:100;
y=amplitude*square(2*pi*frequency*t);
plot(t,y);
xlabel('Amplitude(v)')
ylabel('Time (s)')
title('Square wave')
case 2
period=1/frequency;
t=0:period*cycles:100;
y=amplitude*sin(2*pi*frequency*t);
plot(t,y);
xlabel('Time(s)');
ylabel('Amplitude');
title('Sine wave');
case 3
period=1/frequency;
t=0:period*cycles:100;
y=amplitude*cos(2*pi*frequency*t);
plot(t,y);
xlabel('Amplitude');
ylabel('Time (s)');
title('Cosine wave');
case 4
period=1/frequency;
t=0:period*cycles:100;
y=tan(pi*frequency*t);
ylim([-1.5*amplitude,1.5*amplitude]);
xlabel('Amplitude');
ylabel('Time (s)');
title('Tangent Curve');
case 5
t=0:.0001:5*tau;
dec= exp(-t/tau);
plot(t,tau);
xlabel('Amplitude (v)');
ylabel('Time (s)');
title ('Exponential Decay');
end
  2 Commenti
the cyclist
the cyclist il 3 Ott 2014
You say "I cannot get the graphs to plot correctly". What do you mean, specifically? Are you getting an error message? If so, what is the full content of that message. If not, then tell us in detail what is not correct.
Caprice Corlew
Caprice Corlew il 3 Ott 2014
I am not getting any error messages, but my graphs do not look how they should. For example, my exponential decay graph looks like a straight line, and my tangent graph just looks like a big block.

Accedi per rispondere a questa domanda.

Risposte (1)

Matz Johansson Bergström
I would put period and t calculation outside of the switch and I think you want
t = linspace(0,period*cycles,100);
  2 Commenti
Caprice Corlew
Caprice Corlew il 3 Ott 2014
I tried that and they are still not plotting correctly.
Matz Johansson Bergström
Matz Johansson Bergström il 3 Ott 2014
Modificato: Matz Johansson Bergström il 3 Ott 2014
Ok, I only tried the sine wave and cosine wave. If you changed them you will get a correct answer for all cases but case 5 in which you use another mapping.
As for case 5 I have to assume that tau is a constant. In that case you want to have 'dec' as the amplitude. So case 5 becomes:
t = 0:.0001:5*tau;
dec = exp(t*tau);
plot(-t, dec);

Tag

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by