latexMatrix() to create a symbolic matrixlatexMatrix() made more general to handle much wider variety of cases, with LaTeX output [JF]Eqn() wrapper to work with other LaTeX-generating code in the package [PC]inv-3d illustrating linear transformations and matrix inverse in 3D using rgllatexMatrix() gets operators for matrix arithmetic (+,-, %*%) and operators (t())latex-equations.Rmd illustrating the variety of functions in the package for constructing matrix equations in LaTeXmatmult(), matsum(), matpower() similar to the operators, but providing simplify = TRUE, as.numeric = TRUEEqn() gains a preview argument, rendering a LaTeX matrix expression in a Viewer pane.latexMatrix() now allows row/column names to be displayed with a matrix.circle() for drawing circles in diagramsvectors() now handles 0-length vectors more gracefully #50.matrix2latex() generalized to allow different bracket types and optionally show the size of the matrix.inv() and aliases now return invisible matrix when verbose = TRUE to match behaviour of related functions (e.g., gaussianElimination())GramSchmidt() gains an argument, omit_zero_columns to control whether all-zero columns are retained in the output (issue #48) [Thx: @ggrothendieck]GramSchmidt().MASS::fractions() in various display functions, #42. (Thx: Phil Chalmers)xprod() for vector cross-productsprintf warning from LU [Phil Chalmers]gaussianElimination() and friends now handle one-row or one-column matrices [suggestion of Jana Jarecki]plotEqn()GramSchmidt() [John Fox]printMatrix()circle3d() [req: Marco Scazzocchio]showEqn() gains a reduced logical to print only the unique regression equations
when a lm()-type object is passed. May be combined with the simplify logical argument
for further reductionsechelon() gains a reduced logical to indicate whether the reduced or non-reduced form is computedpowerMethod() gains a plot = TRUE logical to draw the iteration history'lm' objects to showEqn() to show the design matrix equationsverbose option to GramSchmidt() and another exampleprintMatEqn() to print matrix expressions side-by-siderename functions for consistency: eig() -> Eigen(), point_on_line() -> pointOnLine(), power_method() -> powerMethod(), row_cofactors() -> rowCofactors(), row_minors() -> rowMinors().
add Det() to compute determinants by elimination, from eigenvalues, or by minors and cofactors, with possibility of verbose output.
plotEqn3d() gets an axes argument and lit to control lighting of the planes; lit solves a problem with the planes becoming indistinguishable in some rotations.
add svdDemo() function to illustrate the SVD of a 3 x 3 matrix [thx: Duncan Murdoch]
add symMat() to create a square symmetric matrix from a vector.
add angle() to calculate angle between vectors
powerMethod() gets a keep argument, for possible use in plotting the convergence of eigenvectors.
add adjoint(), to round out methods for determinants
add GramSchmidt() for the Gram-Schmidt algorithm on columns of a matrix. The existing function gsorth() will be deprecated and then removed.
gsorth() has been deprecated.
fixed use of MASS::fractions in gaussianElimination
added printMatEqn() to print matrix expressions side-by-side
det-ex1)det-ex2)inv-ex1)inv-ex2)ginv)J() for unit vectors, matricesLU() for LU decompositionvectors3d() and arrows3d(), which defaults to TRUE. If FALSE, just returns
returns the "reg.length" to help in scaling.showEqn() and gaussianElimination() get latex arguments, to print results in LaTeX format [thx: Phil Chalmers]error.sphere to plot.regvec3d() [JF]lengths() in corner() to avoid R version dependencycorner() in vectors3d.Rdarc() for 2D, 3D vector diagrams to show angles between vectorsregvec3d() for 2D, 3D vector diagrams representing a bivariate multiple regression model, lm(y ~ x1 + x2) [thx: John Fox].arrows() to produce nice arrows in 2D vector() diagramsshowEqn() now aligns terms vertically and prints without quotesabsolute in points_on_line() and clarified documentationvandermode() functionvec() convenience function to vectorize a matrixis_square_matrix() testspower_method(), power method for dominant eigenvector [thx: Gaston Sanchez]arrows3d() for 3D geometric diagramsvectors3d() for 3D geometric diagramscorner() for 2D, 3D geometric diagramsman/matlib.Rd from README.mdswp() functionvignette("gramreg") - Gram-Schmidt Orthogonalization and Regressionlen() convenience function for Euclidean lengthsplotEqn3d() function using rgl to plot equations in 3 unknownsmatlib.R to become a package .Rd documentproj() -> Proj() to avoid conflict with stats::proj()vectors() for plotting geometric diagramsInitial CRAN release