How to find highest three peaks in histogram?

I found histogram of an image.I want to find highest three peaks of the histogram and find its location to feed as input.How to do it using for loop?

[Gentian Zavalani]

Return data from hist function to a variable (y = hist(x,bin);) and use Peakfinder FileExchange submission to find local maximums.

[Guillaume]

We're talking about histogram (of an image so imhist is better than the very outdated hist), so peakfinder (or findpeaks) are not appropriate as they find local maxima. I assume Escalin just want the location of the highest three values in the histogram (which may well be next to each other)

Answer 1

[Massimo Zanetti]

Use findpeaks built-in Matlab function. https://it.mathworks.com/help/signal/ref/findpeaks.html

Answer 2

[Guillaume]

[counts, binlocation] = imhist(yourimage);  %plus whatever option you used for imhist
[sortedcount, indices] = sort(count);    %sort your histogram
peakvalues = sortedcount(1:3)              %highest 3 count in the histogram
peaklocations = binlocation(indices(1:3))  %respective image intensities for these peaks

[ayyappa rudrasimha yedida]

use findpeaks()

[Guillaume]

Absolutely Not! findpeaks is completely inappropriate for finding the highest three values of an histogram.

[Image Analyst]

That's why I asked him, in his duplicate question, to explain what he defines as peaks, since there is some ambiguity and different people can define peaks in different ways, like the 3 highest bins, or the bins at the centers of the three tallest "humps" in the histogram. We need to know which way he wants it.