MATLAB: How to find peak value in graph like normal distribution

graphnormal distribution

I drew a graph like a normal distribution.

I want to know the data value of the highest part of the graph. Is there any code to do this?

The max function would likely do what you want.

The easiest way is just to recalculate the 'YTickLabel' values, if you only wnat to normalise the y-axis:

r = normrnd(10,1,100,1);
figure(1)
histfit(r)
yt = get(gca, 'YTick');
set(gca, 'YTick', yt, 'YTickLabel', yt/numel(r))