why i am getting blank plot

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pooja
pooja 2023-9-26
评论： Dyuman Joshi 2023-9-26
Ran in:
% PAM Modulation
M_pam = [2, 4, 8]; % Order of PAM modulation
for i = 1:length(M_pam)
% Generate random binary data
data = randi([0 M_pam(i)-1], 10, 1);
% PAM modulation
mod_signal = pammod(data, M_pam(i));
% Plot passband waveform
figure;
plot(mod_signal);
title(['Passband PAM Modulation, M = ', num2str(M_pam(i))]);
% Plot signal space representation (I-Q)
figure;
scatterplot(mod_signal, 1, 0, 'b*');
title(['Signal Space Representation (I-Q) for PAM, M = ', num2str(M_pam(i))]);
end
  3 个评论
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pooja
pooja 2023-9-26
i was getting 6 plots 3 blank plots , but after removing figure it resolved
Dyuman Joshi
Dyuman Joshi 2023-9-26
How can you have 9 plots when you have only defined 3*2 == 6 plots?

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采纳的回答

Mann Baidi
Mann Baidi 2023-9-26
编辑：Mann Baidi 2023-9-26
Ran in:
Hi Pooja,
I understand you are facing issue in plotting graphs in a loop. I would suggest you to remove the "figure" from the "scatter plot" function. You can try this modified code.
M_pam = [2,4,8]; % Order of PAM modulation
for i = 1:length(M_pam)
% Generate random binary data
data = randi([0 M_pam(i)-1], 10, 1);
% PAM modulation
mod_signal = pammod(data, M_pam(i));
% Plot passband waveform
figure
plot(mod_signal);
title(['Passband PAM Modulation, M = ', num2str(M_pam(i))]);
% Plot signal space representation (I-Q)
scatterplot(mod_signal, 1, 0, 'b*');
title(['Signal Space Representation (I-Q) for PAM, M = ', num2str(M_pam(i))]);
end
Hope this helps!
  3 个评论
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pooja
pooja 2023-9-26
it worked thanks a lot
Dyuman Joshi
Dyuman Joshi 2023-9-26
@pooja, There was no problem with your code to begin with.

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