visibilitity graph MATLAB CODE

I want to draw the visibilitity graph of a time series data. Any body can provide me the MATLAB code for it. For example see the attached file.

[Waseem AL Aqqad]

https://www.mathworks.com/matlabcentral/answers/302636-who-have-visibility-graph-algorithm-matlab-code-i-m-looking-for-the-code-but-have-not-found-it#answer_234403

[DIMITRIOS]

can i use the code that is connected to the web page you have posted for my assingment that is regarding visibility graph and dijkstra algorithm? and if so what is the explaination i can put in the ppt slide?