I need to obtain the proportion of all returns within 5 equally spaced height bins between the cutoff (1 meter) and the maximum height value. I need to get this proportion of all returns for 1000 cylinders with diameter of 28 m (I have the center coordinates of each cylinder).

I am planning to use FUSION to do this task. It seems that PolyClipData will work to clip the cylinders if I generate a shapefile file buffering my points. Then, CloudMetrics (strata:[#,#,#,...) would compute the returns in various height strata. However, the example in the user's manual shows that strata will be fixed (from the default strata) i.e. 0.15, 1.37, 5, 10, 20, 30.

What I want is to have 5 equally spaced height bins between the cutoff and the maximum height value, so the height of the strata will vary according to the highest return. How can specify this function in the switch strata?