Spatial Spread Sampling Using Weakly Associated Vectors
- Resource Type
- Working Paper
- Authors
- Jauslin, Raphaël; Tillé, Yves
- Source
- Journal of Agricultural, Biological and Environmental Statistics 25 (2020) 431-451
- Subject
- Statistics - Methodology
- Language
Geographical data are generally autocorrelated. In this case, it is preferable to select spread units. In this paper, we propose a new method for selecting well-spread samples from a finite spatial population with equal or unequal inclusion probabilities. The proposed method is based on the definition of a spatial structure by using a stratification matrix. Our method exactly satisfies given inclusion probabilities and provides samples that are very well-spread. A set of simulations shows that our method outperforms other existing methods such as the Generalized Random Tessellation Stratified (GRTS) or the Local Pivotal Method (LPM). Analysis of the variance on a real dataset shows that our method is more accurate than these two. Furthermore, a variance estimator is proposed.
Comment: To appear in JABES