How to plot pdf and cdf on my histograms

Hello,

I have 2 histograms with 5000 and 50 random samples. (Mu=5 and sd=7) I want to add their pdf and cdf curve on my histograms.

Can you help me, please?

xNormal = random('Normal',5,7,1,5000);
h = histogram(xNormal,'Normalization','pdf')
hold on
yNormal = random('Normal',5,7,1,50);
hold on
h = histogram(yNormal,'Normalization','pdf');
hold on
xlabel('Class Intervals');
ylabel('Frequency');

[Rik]

Please don't double-post your question.

Answer 1

[Ameer Hamza]

You are already plotting the pdf of these distributions. Do you want to draw cdf on the same graph? If so, just pass the option 'Normalization','pdf' to the histogram function. For example,

xNormal = random('Normal',5,7,1,5000);
yNormal = random('Normal',5,7,1,50);

estimated_dist_x = fitdist(xNormal', 'Normal');
xRange = linspace(min(xNormal), max(xNormal));
xPdf = pdf(estimated_dist_x, xRange);
xCdf = cdf(estimated_dist_x, xRange);

estimated_dist_y = fitdist(xNormal', 'Normal');
yRange = linspace(min(yNormal), max(yNormal));
yPdf = pdf(estimated_dist_y, yRange);
yCdf = cdf(estimated_dist_y, yRange);

fig1 = figure();
hold on;
xlabel('Class Intervals');
histogram(xNormal,'Normalization','pdf');
plot(xRange, xPdf, 'LineWidth', 2);
ylabel('pdf');
yyaxis right
plot(xRange, xCdf, 'LineWidth', 2);
ylabel('cdf');

fig2 = figure();
hold on;
xlabel('Class Intervals');
histogram(yNormal,'Normalization','pdf');
plot(yRange, yPdf, 'LineWidth', 2);
ylabel('pdf');
yyaxis right
plot(yRange, yCdf, 'LineWidth', 2);
ylabel('cdf');

[N/A]

But I have 2 different histograms and I want pdf and cdf as a curve on my histagrams.

This code provide cdf as columns.

I need 2 pdf and 2 cdf on my 2 histograms. (different pdf and cdf for each histogram)

[Ameer Hamza]

If you want to draw curves, then have a look at the updated code in my answer.

[N/A]

It gives me pdf and cdf as histogram. I need curves. Here my output in the attachment.

[Ameer Hamza]

You ran the older code again. The updated code is changed.

[N/A]

oh, thank you :)