finding all local minima of histogram

I have a histogram and I need to find all the local minima of that histogram.

[Rafia Mansoor]

through islocalmin we can find all the local minimas. but that is compatible with 2017 version of matlab and not with the previsous version of matlb

Answer 1

[Bjorn Gustavsson]

If you read the help of the hist function you'll find:

    N = HIST(Y) bins the elements of Y into 10 equally spaced containers

...and

    [N,X] = HIST(...) also returns the position of the bin centers in X.

So that gives you a means to get both the histogram-counts and the centre-position.

From there you need to find the local maxima. That should be rather easy (provided you have no

exact repeat values in N at the local minima), use diff and check where that goes from negative to positive.

[Rafia Mansoor]

I didn't get your point can you please explain it properly.

[Bjorn Gustavsson]

Sure, if you can convince me this isn't homework.

[Rafia Mansoor]

this was not my homework. That's part of my research well I have found the correct answer.

[Bjorn Gustavsson]

Good!