evolveGRTSOverTime: Constructing GRTS designs over time using the 'master sample'...

In apear9/SSNdesign: An R Package for Optimal and Adaptive Sampling Designs on Stream Networks

Description

This function takes a SpatialStreamNetwork object with temporally replicated sites and returns a GRTS design that evolves over time.

The 'master sample' approach was described by Larsen et al. (2008). It exploits the fact that ordered subsets of GRTS designs are themselves GRTS designs in order to sequentially construct GRTS designs.

Usage

evolveGRTSOverTime(ssn, num.sites, rep.variable)

Arguments

ssn	A SpatialStreamNetwork object
num.sites	A numeric vector. This vector can contain a single element or as many elements as there are temporal steps in the ssn sites
rep.variable	A string being the variable on which the temporal replicates are defined

Value

A list which indicates the design for each timestep. The designs are given in lists with two named elements: by.locID, where the sites are given by their locID values; by.pid, where the sites are given by their pid values.

References

Larsen, D.P., Olsen, A.R., and Stevens, D.L. (2008). Using a Master Sample to Integrate Stream Monitoring Programs. Journal of Agricultural, Biological and Environmental Statistics, 13(3), 243-254.

apear9/SSNdesign documentation built on Feb. 19, 2020, 4:29 a.m.