Creating a Bell Curve of Data

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Claire Hollow 2020-6-17

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评论： Claire Hollow 2020-6-17

tmax.mat

Hello. I have a large set of temperature observations called tmax (26298x1 double) and I want to make a bell curve of all the data to see what it looks like. I've done a lot of browsing and can't find a simple way to do this. Does anyone have help on this? Thank you!

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Claire Hollow 2020-6-17

在 MATLAB Online 中打开

Heres a little update. I tried

pd = fitdist(tmax01,'Normal')
y=normpdf(tmax01,63.8972,21.5533);
figure(1)
plot(tmax01,y)

but the curve is a mess of so many lines, how do I get just one?

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Answer 1

David Hill 2020-6-17

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https://ww2.mathworks.cn/matlabcentral/answers/550092-creating-a-bell-curve-of-data#answer_452781

编辑：David Hill 2020-6-17

在 MATLAB Online 中打开

Just looking at your data, histogram() function is useful.

histogram(tmax01,30);%however many bins you want

You could overlay:

pd = fitdist(tmax01,'Normal');
x_values = min(tmax01):.1:max(tmax01);%not sure what step to use
y = pdf(pd,x_values);
hold on;
plot(x_values,y,'LineWidth',2);
histogram(tmax01,30);