title: Spatially balanced sampling through the pivotal method.
abstract: A simple method to select a spatially balanced sample using equal or unequal inclusion probabilities is presented. For populations with spatial trends in the variables of interest, the estimation can be much improved by selecting samples that are well spread over the population. The method can be used for any number of dimensions and can hence also select spatially balanced samples in a space spanned by several auxiliary variables. Analysis and examples indicate that the suggested method achieves a high degree of spatial balance and is therefore efficient for populations with trends.
authors: Department of Forest Resource Management, Swedish University of Agricultural Sciences, SE-90183 Umeå, Sweden. anton.grafstrom@slu.se
authors: Anton
authors: A
authors: Grafström
authors: Niklas L P
authors: NL
authors: Lundström
authors: Lina
authors: L
authors: Schelin
mesh_terms: D000704:Analysis of Variance; D001699:Biometry / Q000379:methods*; D015233:Models, Statistical; D011157:Population Dynamics; D011336:Probability; D018401:Sample Size