# To integrate histogram bins

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Pouyan Msgn on 16 Aug 2020
Commented: Image Analyst on 16 Aug 2020
Hi ! I have 2 files where I have first to create histogram and then find the integrated value of some bins!
clc
clear all
D1=importdata('M1.txt');
t1=D1(:,1); A1=D1(:,2);
D=importdata('M2.txt');
t=D(:,1); A=D(:,2);
Af=[A1
A];
h=histogram(Af,130)
I want integrated values from 0 to 0.05, 0.05 to 0.1 and from 0.1 to 0.15 !
But I dont know how to do this!

Image Analyst on 16 Aug 2020
Your bin edges don't match up exactly with those numbers so there will be data in the starting and ending bins that are outside of the range you want. Therefore you can't do it from the histogram directly. You must count the values of Af that lie in the range. Here is how you do it:
count1 = sum(Af >= 0 & Af <= 0.05)
count2 = sum(Af >= 0.05 & Af <= 0.1)
count3 = sum(Af >= 0.1 & Af <= 0.15)
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Image Analyst on 16 Aug 2020
Of course, you can use the same concept to go between any two numbers.