How do i plot probability density plot with actual values?

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israt fatema 2021-11-16

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https://ww2.mathworks.cn/matlabcentral/answers/1587634-how-do-i-plot-probability-density-plot-with-actual-values

评论： Star Strider 2021-11-16

PDF_actual.png

How do i plot probability density curve with actual values as vertical line (as the picture attached)? And how to interpret that according to the distribution? Thank you.

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israt fatema 2021-11-16

You are really a great help. I have studied your other answers which are very helpful. Thanks a lot.

Star Strider 2021-11-16

As always, my pleasure!

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Answer 1

Star Strider 2021-11-16

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1587634-how-do-i-plot-probability-density-plot-with-actual-values#answer_832419

在 MATLAB Online 中打开

If the distribution function is provided, along with the necessary parameters (none of which are prrovided here), this is straightforward —

x = linspace(1500, 2100);

mu = 1800;

sigma = 75;

npdf = normpdf(x, mu, sigma); % Use Normal Distribution To Demonstrate

npdf = 1×100

0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0001 0.0001 0.0001 0.0001 0.0001 0.0002 0.0002 0.0003 0.0003 0.0004 0.0005 0.0005 0.0006 0.0007 0.0009 0.0010 0.0012 0.0013

figure

patch([x flip(x)], [zeros(size(npdf)) flip(npdf) ], 'b', 'FaceAlpha',0.25)

hold on

plot([1 1]*mu, [0 normpdf(mu, mu, sigma)], '-r', 'LineWidth',2)

hold off

Experiment with the intended distribution function and parameters.

.