Implementation of the 3D Alpha-Shape for the Reconstruction of
3D Sets from a Point Cloud
Implementation in R of the alpha-shape of a finite set of points in the three-dimensional space. The alpha-shape generalizes the convex hull and allows to recover the shape of non-convex and even non-connected sets in 3D, given a random sample of points taken into it. Besides the computation of the alpha-shape, this package provides users with functions to compute the volume of the alpha-shape, identify the connected components and facilitate the three-dimensional graphical visualization of the estimated set.

Mahdi Teimouri, Adel Mohammadpour, Saralees Nadarajah
Developed to perform the tasks given by the following.
1-computing the probability density function and distribution function of a univariate
stable distribution; 2- generating realization from univariate stable, truncated stable,
multivariate elliptically contoured stable, and bivariate strictly stable distributions;
3- estimating the parameters of univariate symmetric stable, skew stable, Cauchy,
multivariate elliptically contoured stable, and multivariate strictly stable distributions;
4- estimating the parameters of the mixture of symmetric stable and mixture of Cauchy
distributions.
base, methods, mvtnorm, nlme, nnls, stabledist, stats
Matrix, fBasics, FMStable, RUnit, Rmpfr, sfsmisc

Mahdi Teimouri, Adel Mohammadpour, and Saralees Nadarajah
Developed to perform the tasks given by the following. 1-computing the probability density function and distribution function of a univariate stable distribution; 2- generating from univariate stable, truncated stable, multivariate elliptically contoured stable, and bivariate strictly stable distributions; 3- estimating the parameters of univariate symmetric stable, skew stable, Cauchy, multivariate elliptically contoured stable, and multivariate strictly stable distributions; 4- estimating
the parameters of the mixture of symmetric stable and mixture of Cauchy distributions.

Lightweight R Interface to the Alpha Vantage API
c(
person("Matt", "Dancho", email = "mdancho@business-science.io", role = c("aut", "cre")),
person("Davis", "Vaughan", email = "dvaughan@business-science.io", role = c("aut"))
)
Alpha Vantage has free historical financial information.
All you need to do is get a free API key at <https://www.alphavantage.co>.
Then you can use the R interface to retrieve free equity information.
Refer to the Alpha Vantage website for more information.
tidyquant, tidyverse, timetk, testthat, knitr
Matt Dancho [aut, cre],
Davis Vaughan [aut]