Draw polyline from excel values

Hi All

I want to generate images using data from excel and label those lengths in the pic. Question is where does one start?

Something like that?

for what do you need excel? are the values are stored?

Well yeah. But now suppose if I have x data points and y points to create a polyline image from these points.

My purpose is to just create a better looking image than this cramped one created by sofistik.