Clutter removal in the signal using Matlab

I am trying to perform clutter removal on a Excel data I have. For example, see the following images (these are from literature). Just like these pictures of graphs I want to omit positive as well as negative data outside a given range (determined by specific thresholds).

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Now my graphs from Matlab are like this

before clutter removal after clutter removal

As you can see, the after clutter removal graph is not similar to what I wanted it to be. I want to omit all values (both positive as well as negative) to get a graph like mentioned above (from literature).

I have given google drive link in the comments below for the Matlab code and excel data sheet.

"Michael code, subsave2, and Michael code result" files together are the main code. The rest of the images are a few things I did with the main code to get the desired result.

https://stackoverflow.com/questions/66040303/clutter-removal-in-the-signal-using-matlab February 04, 2021 at 02:20PM