3D Plot of Probability Density Functions using normpdf and line function

Question

alex535 2022-1-8

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https://ww2.mathworks.cn/matlabcentral/answers/1624790-3d-plot-of-probability-density-functions-using-normpdf-and-line-function

回答： Prahlad Gowtham Katte 2022-1-25

I am trying to plot consecutive PDFs(Probability Density Function) using the line function in a 3D plot. I am able to plot the PDFs in 2D plot. However, may I please get some corrections/suggestions for the following code for the 3D plot. I am trying to show peak probability on vertical axis for t iterations.Thank you.

sigma = 30;

mu = 230;

t = 5;

for i = 1:1:t

if mu <= 230*5

s6=6*sigma;

x_pdf_1 = [-700:700];

y1 = normpdf(x_pdf_1,mu,sigma);

figure(1)

hold on

l=line(x_pdf_1,y1);

figure(2)

plot3(l,mu,t)

mu = mu+30;

end

2D Plot Result

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Answer 1

Prahlad Gowtham Katte 2022-1-25

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Hi

I understand that you’re trying to plot consecutive PDFs using 3D plot. Following code snippet might help to resolve the issue.

sigma = 30; 
mu = 230; 
t = 5; 
for i = 1:1:t 
    if mu <= 230*5 
        s6=6*sigma; 
        x_pdf_1 = [-700:700]; 
        y1 = normpdf(x_pdf_1,mu,sigma);
        figure(1) 
        hold on 
        l=line(x_pdf_1,y1); 
        figure(2) 
        plot3(x_pdf_1,y1,i*(ones(length(x_pdf_1))))  %Plotting a 3d plot in iteration i.
        hold on %Making sure the plots would be on same figure
        mu = mu+30; 
    end 
end 