README.md

In rhobis/FPdust: An Implementation of the FPDUST and PPS FPDUST Spatial Sampling Designs for Finite Populations

FPdust

Description

FPdust implements the FPDUST (Fattorini and Ridolfi, 1997) and PPS FPDUST (Barabesi et al., 1997) spatial sampling designs for Finite Populations. These designs draw a sample of spatial units by reducing, after each draw, the selection probability of units that are adjacent to any unit that have already been sampled. The PPS FPDUST sampling is a probability-proportional-to-size sampling obtained by including a size variable in the FPDUST sampling.

Installation

The development version of the package can be installed from GitHub:

# if not present, install 'devtools' package
install.packages("devtools")
devtools::install_github("rhobis/fpdust")

Usage

library(fpdust)

# List of contiguous units ---
cl <- list( c(2, 3), c(1,4), c(1,6), c(2,6), NULL, c(3,4))
# Generate spatial contingency matrix ---
cm <- spatialContingencyMatrix(cl)

### Draw a FPDUST sample ---
fpdust(cm, n= 2, beta=0.5)

### Draw a PPS FPDUST sample ---
X <- rgamma(6, 20)
fpdustPPS(cm, X, n= 2, beta=0.5)

More

• Please, report any bug or issue here.
• For more information, please contact the maintainer at [e-mail].

rhobis/FPdust documentation built on May 29, 2021, 8:36 a.m.