Lagrangian Radii Demo

Set demo parameters:

The current data file represents the collapse of an initially cold (v = 0) sphere containing 2048 point particles interacting only via gravity. It contains 80 frames, uniformly sampled over the range t = [0,10] (delta t = 0.125).

        first frame
        last frame
        number of Lagrangian radii (uniform in mass) to display

        nonlinear plot (forces 9 Lagrangian radii and a vertical log scale)