polynom - A Collection of Functions to Implement a Class for Univariate Polynomial Manipulations

A collection of functions to implement a class for univariate polynomial manipulations.

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9.77 score 1 stars 687 dependents 519 scripts 182k downloads

english - Translate Integers into English

Allow numbers to be presented in an English language version, one, two, three, ... Ordinals are also available, first, second, third, ... and indefinite article choice, "a" or "an".

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7.12 score 3 stars 36 dependents 396 scripts 10k downloads

PolynomF - Polynomials in R

Implements univariate polynomial operations in R, including polynomial arithmetic, finding zeros, plotting, and some operations on lists of polynomials.

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cpp

4.48 score 14 dependents 46 scripts 1.6k downloads

fractional - Vulgar Fractions in R

The main function of this package allows numerical vector objects to be displayed with their values in vulgar fractional form. This is convenient if patterns can then be more easily detected. In some cases replacing the components of a numeric vector by a rational approximation can also be expected to remove some component of round-off error. The main functions form a re-implementation of the functions 'fractions' and 'rational' of the MASS package, but using a radically improved programming strategy.

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cpp

4.37 score 3 dependents 33 scripts 3.9k downloads

conf.design - Construction of factorial designs

This small library contains a series of simple tools for constructing and manipulating confounded and fractional factorial designs.

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4.19 score 22 dependents 16 scripts 7.3k downloads

SOAR - Memory Management in R by Delayed Assignments

Allows objects to be stored on disc and automatically recalled into memory, as required, by delayed assignment.

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3.91 score 82 scripts 713 downloads

bannerCommenter - Make Banner Comments with a Consistent Format

A convenience package for use while drafting code. It facilitates making stand-out comment lines decorated with bands of characters. The input text strings are converted into R comment lines, suitably formatted. These are then displayed in a console window and, if possible, automatically transferred to a clipboard ready for pasting into an R script. Designed to save time when drafting R scripts that will need to be navigated and maintained by other programmers.

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3.55 score 1 stars 2 dependents 59 scripts 346 downloads

codingMatrices - Alternative Factor Coding Matrices for Linear Model Formulae

A collection of coding functions as alternatives to the standard functions in the stats package, which have names starting with 'contr.'. Their main advantage is that they provide a consistent method for defining marginal effects in factorial models. In a simple one-way ANOVA model the intercept term is always the simple average of the class means.

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3.33 score 1 dependents 17 scripts 4.2k downloads

MASSExtra - Some 'MASS' Enhancements

Some enhancements, extensions and additions to the facilities of the recommended 'MASS' package that are useful mainly for teaching purposes, with more convenient default settings and user interfaces. Key functions from 'MASS' are imported and re-exported to avoid masking conflicts. In addition we provide some additional functions mainly used to illustrate coding paradigms and techniques, such as Gramm-Schmidt orthogonalisation and generalised eigenvalue problems.

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2.95 score 18 scripts 382 downloads

sudokuAlt - Tools for Making and Spoiling Sudoku Games

Tools for making, retrieving, displaying and solving sudoku games. This package is an alternative to the earlier sudoku-solver package, 'sudoku'. The present package uses a slightly different algorithm, has a simpler coding and presents a few more sugar tools, such as plot and print methods. Solved sudoku games are of some interest in Experimental Design as examples of Latin Square designs with additional balance constraints.

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2.26 score 1 stars 18 scripts 247 downloads

Horsekicks - Provide Extensions to the Prussian Army Death by Horsekick Data

We provide extensions to the classical dataset "Example 4: Death by the kick of a horse in the Prussian Army" first used by Ladislaus von Bortkeiwicz in his treatise on the Poisson distribution "Das Gesetz der kleinen Zahlen", <DOI:10.1017/S0370164600019453>. As well as an extended time series for the horse-kick death data, we also provide, in parallel, deaths by falling from a horse and by drowning.

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2.00 score 5 scripts 207 downloads

frenchCurve - Generate Open or Closed Interpolating Curves

Functions for finding smooth interpolating curves connecting a series of points in the plane. Curves may be open or closed, that is, with the first and last point of the curve at the initial point.

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2.00 score 2 scripts 187 downloads

JacobiEigen - Classical Jacobi Eigenvalue Algorithm

Implements the classical Jacobi algorithm for the eigenvalues and eigenvectors of a real symmetric matrix, both in pure 'R' and in 'C++' using 'Rcpp'. Mainly as a programming example for teaching purposes.

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cpp

2.00 score 8 scripts 214 downloads

demoKde - Kernel Density Estimation for Demonstration Purposes

Demonstration code showing how (univariate) kernel density estimates are computed, at least conceptually, and allowing users to experiment with different kernels, should they so wish. The method used follows directly the definition, but gains efficiency by replacing the observations by frequencies in a very fine grid covering the sample range. A canonical reference is B. W. Silverman, (1998) <doi: 10.1201/9781315140919>. NOTE: the density function in the stats package uses a more sophisticated method based on the fast Fourier transform and that function should be used if computational efficiency is a prime consideration.

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1.48 score 1 dependents 3 scripts 317 downloads

lazyData - A LazyData Facility

Supplies a LazyData facility for packages which have data sets but do not provide LazyData: true. A single function is is included, requireData, which is a drop-in replacement for base::require, but carrying the additional functionality. By default, it suppresses package startup messages as well. See argument 'reallyQuitely'.

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1.48 score 1 dependents 3 scripts 219 downloads

minimax - The Minimax Distribution Family

The minimax family of distributions is a two-parameter family like the beta family, but computationally a lot more tractible.

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1.00 score 2 scripts 497 downloads