McDonald, 2004

McDonald, T. L. 2004. GRTS for the average joe: A GRTS sampler for Windows. West, Inc., Laramie, Wyoming.

Generalized random tessellation stratified (GRTS) samples are useful spatial sampling designs for a number of reasons. But, actually drawing a GRTS sample can be so complicated that some practitioners opt for a simpler design. In this paper, I describe a computer program designed to draw GRTS samples of discrete sample units that are located in either 1-dimension or 2-dimension. This program, S-Draw, is a Fortran-based application that will run on any computer running a Windows operating system. The GRTS sampling program reads a sample frame from a standard ASCII file, and writes the sample in another ASCII file. While the existence of this program will not illuminate the theoretical details and justification of GRTS samples, it will, I hope, make drawing a GRTS sample accessible to non-statistically inclined researchers.