how to find centroid between to end and junction point

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>> this is my image i already find out the end points and branch points but i want to plot a point in between these two point because i will help me to add edges between to points. please give me some code to find the mid points or centroid between two points

[Joshua]

I believe you are just looking for the midpoint formula which is fairly straightforward to code, but there is not enough information provided in the question to code it. Read this link and give it a shot. http://www.purplemath.com/modules/midpoint.htm

[Raghu Rao]

Thank you its working