Showing 12 of total 12 results (show query)
m-jahn
WeightedTreemaps:Generate and Plot Voronoi or Sunburst Treemaps from Hierarchical Data
Treemaps are a visually appealing graphical representation of numerical data using a space-filling approach. A plane or 'map' is subdivided into smaller areas called cells. The cells in the map are scaled according to an underlying metric which allows to grasp the hierarchical organization and relative importance of many objects at once. This package contains two different implementations of treemaps, Voronoi treemaps and Sunburst treemaps. The Voronoi treemap function subdivides the plot area in polygonal cells according to the highest hierarchical level, then continues to subdivide those parental cells on the next lower hierarchical level, and so on. The Sunburst treemap is a computationally less demanding treemap that does not require iterative refinement, but simply generates circle sectors that are sized according to predefined weights. The Voronoi tesselation is based on functions from Paul Murrell (2012) <https://www.stat.auckland.ac.nz/~paul/Reports/VoronoiTreemap/voronoiTreeMap.html>.
Maintained by Michael Jahn. Last updated 4 months ago.
r-programmingrcppsunburst-treemapvoronoi-diagramvoronoi-treemapcpp
50 stars 6.73 score 18 scripts
robjhyndman
weird:Functions and Data Sets for "That's Weird: Anomaly Detection Using R" by Rob J Hyndman
All functions and data sets required for the examples in the book Hyndman (2024) "That's Weird: Anomaly Detection Using R" <https://OTexts.com/weird/>. All packages needed to run the examples are also loaded.
Maintained by Rob Hyndman. Last updated 3 months ago.
17 stars 5.74 score 18 scripts
tylermorganwall
raybevel:Generates Polygon Straight Skeletons and 3D Bevels
Generates polygon straight skeletons and 3D models. Provides functions to create and visualize interior polygon offsets, 3D beveled polygons, and 3D roof models.
Maintained by Tyler Morgan-Wall. Last updated 2 months ago.
25 stars 4.88 score 3 scripts
stla
ratioOfQsprays:Fractions of Multivariate Polynomials with Rational Coefficients
Based on the 'qspray' package, this package introduces the new type 'ratioOfQsprays'. An object of type 'qspray' represents a multivariate polynomial with rational coefficients while an object of type 'ratioOfQsprays', defined by two 'qspray' objects, represents a fraction of two multivariate polynomials with rational coefficients. Arithmetic operations for these objects are available, and they always return irreducible fractions. Other features include: differentiation, evaluation, conversion to a function, and fine control of the way to print a 'ratioOfQsprays' object. The 'C++' library 'CGAL' is used to make the fractions irreducible.
Maintained by Stéphane Laurent. Last updated 8 months ago.
multivariate-polynomialspolynomialsrational-functionsgmpcpp
4.73 score 20 scripts 2 dependentsstla
jack:Jack, Zonal, Schur, and Other Symmetric Polynomials
Schur polynomials appear in combinatorics and zonal polynomials appear in random matrix theory. They are particular cases of Jack polynomials. This package allows to compute these polynomials and other symmetric multivariate polynomials: flagged Schur polynomials, factorial Schur polynomials, t-Schur polynomials, Hall-Littlewood polynomials, Green polynomials, Macdonald polynomials, and modified Macdonald polynomials. In addition, it can compute the Kostka-Jack numbers, the Kostka-Foulkes polynomials, the Kostka-Macdonald polynomials, and the Hall polynomials. Mainly based on Demmel & Koev's paper (2006) <doi:10.1090/S0025-5718-05-01780-1> and Macdonald's book (1995) <doi:10.1093/oso/9780198534891.003.0001>.
Maintained by Stéphane Laurent. Last updated 7 months ago.
jack-polynomialsschur-polynomialssymmetric-polynomialszonal-polynomialsgmpcpp
1 stars 4.67 score 41 scriptsstla
symbolicQspray:Multivariate Polynomials with Symbolic Parameters in their Coefficients
Introduces the 'symbolicQspray' objects. Such an object represents a multivariate polynomial whose coefficients are fractions of multivariate polynomials with rational coefficients. The package allows arithmetic on such polynomials. It is based on the 'qspray' and 'ratioOfQsprays' packages. Some functions for 'qspray' polynomials have their counterpart for 'symbolicQspray' polynomials. A 'symbolicQspray' polynomial should not be seen as a polynomial on the field of fractions of rational polynomials, but should rather be seen as a polynomial with rational coefficients depending on some parameters, symbolically represented, with a dependence given by fractions of rational polynomials.
Maintained by Stéphane Laurent. Last updated 8 months ago.
multivariate-polynomialssymbolic-computationgmpcpp
4.33 score 18 scripts 1 dependents
ericdunipace
approxOT:Approximate and Exact Optimal Transport Methods
R and C++ functions to perform exact and approximate optimal transport. All C++ methods can be linked to other R packages via their header files.
Maintained by Eric Dunipace. Last updated 3 months ago.
3 stars 4.26 score 2 scripts 1 dependentsstla
resultant:Utilities for Multivariate Polynomials with Rational Coefficients
Computation of resultant, subresultants, greatest common divisor, integral division (aka division without remainder) of two multivariate polynomials with rational coefficients, Sturm-Habicht sequence and square-free factorization of a multivariate polynomial with rational coefficients. The computations are performed by the 'C++' library 'CGAL' (<https://www.cgal.org/>). Resultants have applications in polynomial systems solving, number theory, and algebraic geometry. The package also contains some functions computing the number of real roots of a univariate polynomial with rational coefficients, and a function computing the division with remainder of two univariate polynomials with rational coefficients.
Maintained by Stéphane Laurent. Last updated 8 months ago.
cgalmultivariate-polynomialsgmpcpp
4.17 score 42 scripts
prioritizr
prepr:Automatic Repair of Spatial Polygons
Automatically repair broken spatial polygons using constrained triangulation. The computational methodology is derived from Ledoux et al. (2014) <doi:10.1016/j.cageo.2014.01.009>.
Maintained by Jeffrey O Hanson. Last updated 4 months ago.
6 stars 4.01 score 17 scriptsericdunipace
WpProj:Linear p-Wasserstein Projections
Performs Wasserstein projections from the predictive distributions of any model into the space of predictive distributions of linear models. We utilize L1 penalties to also reduce the complexity of the model space. This package employs the methods as described in Dunipace, Eric and Lorenzo Trippa (2020) <doi:10.48550/arXiv.2012.09999>.
Maintained by Eric Dunipace. Last updated 2 months ago.
3.48 scorestla
interpolation:Interpolation of Bivariate Functions
Provides two different methods, linear and nonlinear, to interpolate a bivariate function, scalar-valued or vector-valued. The interpolated data are not necessarily gridded. The algorithms are performed by the 'C++' library 'CGAL' (<https://www.cgal.org/>).
Maintained by Stéphane Laurent. Last updated 1 years ago.
2 stars 3.48 score 5 scripts 1 dependentsstla
Apollonius:2D Apollonius Graphs
Computation of the Apollonius diagram of given 2D points and its dual the Apollonius graph, also known as the additively weighted Voronoï diagram, and which is a generalization of the classical Voronoï diagram. For references, see the bibliography in the CGAL documentation at <https://doc.cgal.org/latest/Apollonius_graph_2/citelist.html>.
Maintained by Stéphane Laurent. Last updated 1 years ago.
cgalcomputational-geometryrcppvoronoi-diagramgmpcpp
3 stars 3.18 score 5 scripts