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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Sai Sri Pathuri
Sai Sri Pathuri el 29 de Mayo de 2020
Editada: Sai Sri Pathuri el 29 de Mayo de 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'
  2 comentarios
Teshan Rezel
Teshan Rezel el 29 de Mayo de 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?
Sai Sri Pathuri
Sai Sri Pathuri el 29 de Mayo de 2020
Following answer may help
You may also search for 'how to find points of inflection on a graph in matlab'. There are a good number of answers which may help.

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