Urgent!!How to find the point where Maximum Curvature occurs on graph? 1. The problem statement, all variables and given/known data The graph(2D) is plotted from experimental data, not from a given equation and within certain limit. I want to know the x&y coordinate where the maximum curvature occur via software means, not manually. FYI, for those with civil&geotechnical engineering background, the graph i am plotting is about consolidation topic of soil mechanics subject, which is the void ratio vs effective stress curve. I want to get the preconsolidation value from the graph plotted. p.s. the attached file is rough idea of what i mean.