plotmo (>= 3.1.5), TeachingDemos (>= 2.10)

Build regression models using the techniques in Friedman's
papers "Fast MARS" and "Multivariate Adaptive Regression
Splines" <doi:10.1214/aos/1176347963>.
(The term "MARS" is trademarked and thus not used in
the name of the package.)

Parallel Implementation of 'ETERNA 3.40' for Prediction and
Analysis of Earth Tides
c(person("Jonathan", "Kennel", email = "jkennel@uoguelph.ca", role = c("aut", "cre", "trl")),
person("Beth", "Parker", email = "bparker@uoguelph.ca", role = "ths"),
person("Wenzel", "Hans-Georg", role = "ctb"))
This is a port of 'Fortran ETERNA 3.4'
<http://igets.u-strasbg.fr/soft_and_tool.php> by H.G. Wenzel
for calculating synthetic Earth tides using the
Hartmann and Wenzel (1994) <doi:10.1029/95GL03324> or
Kudryavtsev (2004) <doi:10.1007/s00190-003-0361-2> tidal catalogs.
Jonathan Kennel [aut, cre, trl],
Beth Parker [ths],
Wenzel Hans-Georg [ctb]

Derive a Color Palette from a Particular Location on Earth
Downloads a satellite image via Google Maps/Earth (these are
originally from a variety of aerial photography sources),
translates the image into a perceptually uniform color space,
runs one of a few different clustering algorithms on the colors in the image
searching for a user-supplied number of colors,
and returns the resulting color palette.
testthat, cluster, knitr, rmarkdown, ggplot2

Stephane Hoareau <sjlhoaro@yahoo.fr>, Guy Lacroix, Mirella
Hoareau, Luca Tiberti
"easi" is a package for R enabling the estimation of the
Exact Affine Stone Index demand system of Pendakur and Lewbel
(2009). However, more than just a transcript, it offers a
number of extensions in an unified framework. Firstly, it
allows to calculate elasticities (income elasticities, price
elasticities and demographic elasticities) and their standard
deviations.  Secondly, it enables the calculation and the
graphical representation of Engel curves and their confidence
interval. Thirdly, it provides simulation tools to assess the
impact of price changes, income changes and demographic changes
on fitted budget shares, elasticities, and their standard
deviations. Finally, easi allows the computation of equivalent
incomes.