Package: gridsample
Title: Tools for Grid-Based Survey Sampling Design
Version: 0.2.0
Author: Dana R. Thomson (University of Southampton), Nick W. Ruktanonchai
(University of Southampton), Forrest R. Stevens (University of Louisville),
Marcia Castro (Harvard University), Andrew J. Tatem (University of Southampton)
Maintainer: Nick Ruktanonchai <nrukt00@gmail.com>
Description: Multi-stage cluster surveys of households are commonly performed by
governments and programmes to monitor population-level demographic, social,
economic, and health outcomes. Generally, communities are sampled from
subpopulations (strata) in a first stage, and then households are listed and
sampled in a second stage. In this typical two-stage design, sampled communities
are the Primary Sampling Units (PSUs) and households are the Secondary Sampling
Units (SSUs). Census data typically serve as the sample frame from which PSUs
are selected. However, if census data are outdated inaccurate, or too
geographically course, gridded population data (such as <http://www.worldpop.org.uk>)
can be used as a sample frame instead. GridSample generates PSUs from gridded
population data according to user-specified complex survey design characteristics
and household sample size. In gridded population sampling, like census sampling,
PSUs are selected within each stratum using a serpentine sampling method, and can
be oversampled in urban or rural areas to ensure a minimum sample size in each of
these important sub-domains. Furthermore, because grid cells are uniform in size
and shape, gridded population sampling allows for samples to be representative of
both the population and of space, which is not possible with a census sample frame.
Depends: R (>= 3.2.3)
License: MIT + file LICENSE
Encoding: UTF-8
LazyData: true
Imports: rgdal (>= 1.2-4), raster (>= 2.5-8), data.table (>= 1.10.4),
rgeos (>= 0.3-21), geosphere (>= 1.5-5), sp (>= 1.2-4), deldir
(>= 0.1-12), spatstat (>= 1.49-0), methods, maptools (>=
0.8-41), spatstat.utils
RoxygenNote: 6.0.1
Suggests: knitr, rmarkdown
VignetteBuilder: knitr
NeedsCompilation: no
Packaged: 2017-04-09 20:38:22 UTC; Nick
Repository: CRAN
Date/Publication: 2017-04-09 21:01:00 UTC