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Is there a way to get the numerical values corresponding to a particular section of a histogram?

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Hi folks,
I'm trying to threshold an image based on a histogram, but I need to eliminate all but a certain part of the histogram. I've attached an image below, with the highlighted part being an example of one I'm interested in. Is there a way to do this?
Thanks in advance

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Accepted Answer

Sai Sri Pathuri
Sai Sri Pathuri on 29 May 2020
Edited: Sai Sri Pathuri on 29 May 2020
You may use Data Brushing. After plotting above graph,
  • Go to Tools and select Brush
  • On the plot, select the desired area and right click on it
  • Choose 'Remove unbrushed data'

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Teshan Rezel
Teshan Rezel on 29 May 2020
Hi Sai, thanks for this! Is there a way to automate this process for a generalised graph, if I know that the points of interest are points of inflection?

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