How to draw such a graph using canvas?

Question

Canvas

Hello everyone, quite recently in canvas, I received the task of drawing such a graph, it turned out to be drawn with ordinary lines

. And I need smoother ones, I already realized that a bezier curve would suit me for this, but I can’t find an algorithm that will bend the lines correctly (they sometimes go up sometimes down should bend), no one will tell you where you can at least read how such things are made?

Answer 1

There is an article about this on Habré

Answer 2

Here