A stratified survey design method that selects sampling points in a given territory using environmental and spatial distances as surrogates of overall diversity. The procedure minimises the variation uncovered by the selected points using a set of consecutive criteria repeated iteratively. In each iteration, a p-median allocation criterion is used to define a vector of preselected sites, then a set of user defined conditions is applied to restrict the preselected sites so that one location is selected in each iteration.
|Author||Nagore Garcia Medina & Bernardo Garcia Carreras|
|Date of publication||None|
|Maintainer||Nagore Garcia Medina <firstname.lastname@example.org>|
alloc: Site allocation procedure using one matrix
allocTM: Site allocation criterion that uses two initial matrices
conditions: Additional conditions
criteria: Criteria for the additional conditions
env: Matrix of environmental distances
geogr: Matrix of geographic distances.
SURDES-package: Functions for survey design based on environmental distance...
vectores: A matrix inlcuding initial localities and additional...
vini: A vector with the starting points