Fitting a curve on normalized histogram

I am looking to plot a curve on normalized histogram something like this? What to do? My code till now

X = wblrnd(5,5, 1, 1000);

Z = X- 1;

figure('DefaultAxesFontSize',18);

P = histogram(Z,'Normalization','pdf');

hold on

xlabel('RUL')

ylabel ('Density')

Answer 1

[Torsten]

You can directly calculate the distribution of Z from the distribution of X and plot its PDF.

Or do you only have a discrete number of data points and want to fit a suitable PDF to them ?