Replacing concaveman

[schochastics]

concaveman is just a suggested package, but it is quite heavy in terms of dependencies if it needs to be installed. There is potentially more lightweight option RcppConcaveman which wraps a C++ implementation of concaveman (unfortunatelly not on CRAN, but it seems quite easy to wrap the cpp code). It also comes with the added benefit of being more efficient.

[thomasp85]

Oh, nice - we should def explore this

[thomasp85]

hmmm... It appears that C++ port is severely bug-riddled as it misses points that ends up outside the hull, and makes up new points along the hull that was never there to begin with + it doesn't create the same result on multiple runs