Conditioned Latin Hypercube Sampling
Conditioned Latin hypercube sampling, as published by Minasny and McBratney (2006) . This method proposes to stratify sampling in presence of ancillary data. An extension of this method, which propose to associate a cost to each individual and take it into account during the optimisation process, is also proposed (Roudier et al., 2012, ).

clhs
A faster (C++) implementation of the conditioned Latin Hypercube Sampling method
Scope
Installation
The C++ method is not yet on CRAN.
You can install it using the devtools package to install clhs:
devtools::install_github("pierreroudier/clhs")