How are isopleths capped?
Isopleths are constructed by merging local hulls (sorted smallest to largest) until they enclose n% of the original points. However it is rare that exactly n% of the points are enclosed. The R version of LoCoH takes the largest union of hulls that encloses <= n%. Thus for example the 50% isopleth for a dataset of 600 points would enclose 300 points or a bit less. The ArcView 3.x version of LoCoH has options to cap isopleths using either <= or >= n% of points.
