Title: Unsupervised Photometric Membership Assignment in Stellar
Author: Alberto Krone-Martins, Andre Moitinho
Description: An implementation of the UPMASK method for performing membership
assignment in stellar clusters in R. It is prepared to use photometry and
spatial positions, but it can take into account other types of data. The
method is able to take into account arbitrary error models, and it is
unsupervised, data-driven, physical-model-free and relies on as few
assumptions as possible. The approach followed for membership assessment is
based on an iterative process, principal component analysis, a clustering
algorithm and a kernel density estimation.

person("Alberto", "Krone-Martins", email = "algol@sim.ul.pt", role = c("aut", "cre")),
person("Andre", "Moitinho", email = "andre@sim.ul.pt", role = c("aut")),
person("Eduardo", "Bezerra", email = "ebezerra@cefet-rj.br", role = c("ctb")),
person("Leonardo", "Lima", email = "leonardo.lima@cefet-rj.br", role = c("ctb")),
person("Tristan", "Cantat-Gaudin", email = "tcantat@fqa.ub.edu", role = c("ctb"))
based on an iterative process, dimensionality reduction, a clustering
Imports: parallel, MASS, RSQLite, DBI, dimRed, loe
Author: Alberto Krone-Martins [aut, cre],

Title: Approximate the Variance of the Horvitz-Thompson Total Estimator
Authors@R: person("Roberto", "Sichera", email = "roberto.sichera@unipa.it", role = c("aut", "cre") )
Description: Variance approximations for the
Horvitz-Thompson total estimator in Unequal Probability Sampling
using only first-order inclusion probabilities.
See Matei and Tillé (2005) and Haziza, Mecatti and Rao (2008) for details.

Authors@R: person("Roberto", "Sichera", email = "rob.sichera@gmail.com", role = c("aut", "cre") )

Title: Replacement of the 'USGSstates2k' Package
Suggests: USA.state.boundaries.data, install.load, drat, graphics,
rgdal, raster, ggspatial, ggplot2, knitr, rmarkdown, gotop
Description: This is a replacement of the archived 'USGSstates2k' package.
It contains a map with the state boundaries of the USA obtained from the
USGS. Irucka worked with this data set while a Cherokee Nation Technology
Solutions (CNTS) USGS Contractor and/or USGS employee. This package
contains a subset of the data included in the 'USA.state.boundaries.data'
package, which is available in a 'drat' repository. To install that data
package, please follow the instructions at
Department of Interior (DOI). For more information, see the