spcosa-package: Spatial Coverage Sampling and Random Sampling from Compact Geographical Strata
Description
Algorithms for spatial coverage sampling and for random sampling from compact
geographical strata based on $$k$$-means.Details
The spcosa-package provides algorithms for spatial coverage sampling and for random sampling from compact geographical strata based on $$k$$-means (see de Gruijter et al., 2006, and kmeans). S4-classes and methods are available for spatial coverage sampling, random
sampling from compact geographical strata, and stratified simple random sampling for composites. In case of spatial coverage sampling, existing sampling points may be taken into account. See the package vignette (./spcosa/doc/spcosa.pdf) and the demos (demo(package = "spcosa")) for more information and examples.References
Brus, D. J., Spatjens, L. E. E. M., and de Gruijter, J. J. (1999). A sampling scheme for estimating the mean extractable phosphorus concentration of fields for environmental regulation. Geoderma 89:129-148
de Gruijter, J. J., Brus, D. J., Bierkens, M. F. P., and Knotters, M. (2006). Sampling for Natural Resource Monitoring Berlin: Springer-Verlag.
Walvoort, D., Brus, D. and de Gruijter, J. (2009). Spatial Coverage Sampling on Various Spatial Scales. Pedometron 26:20-22
Walvoort, D. J. J., Brus, D. J. and de Gruijter, J. J. (2009, submitted). An R package for spatial coverage sampling and random sampling from compact geographical strata by $$k$$-means. Submitted to Computers & Geosciences