v.1.0.0

matlib 1.0.0

This is a major update, adding a system for constructing and rendering matrix expressions, operations and equations in LaTeX

• added latexMatrix() to create a symbolic matrix
• latexMatrix() made more general to handle much wider variety of cases, with LaTeX output [JF]
• this is fleshed out with an Eqn() wrapper to work with other LaTeX-generating code in the package [PC]
• added a vignette, inv-3d illustrating linear transformations and matrix inverse in 3D using rgl
• latexMatrix() gets operators for matrix arithmetic (+,-, %*%) and operators (t())
• added vignette, latex-equations.Rmd illustrating the variety of functions in the package for constructing matrix equations in LaTeX
• added functions matmult(), matsum(), matpower() similar to the operators, but providing simplify = TRUE, as.numeric = TRUE
• Eqn() 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.

Bug fixes & enhancements

matlib 0.9.8

• added circle() for drawing circles in diagrams
• vectors() now handles 0-length vectors more gracefully #50.
• matrix2latex() generalized to allow different bracket types and optionally show the size of the matrix.

matlib 0.9.7

• 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]
• Merge pull request #49 from JF to retain column names in GramSchmidt().

fix webshot2 problem

• fix 'CRAN packages requiring webshot2 but not declaring it'
• fix error from Proj.Rd
• update release for zenodo

New mods, vignette

• added xprod() for vector cross-product
• added data-beta vignette
• fix sprintf warning from LU [Phil Chalmers]
• better plotting of planes in plotEqn3d, alpha=0.9

commit 1fa9fd5285

Fix some minor bugs and update documentation

Added 5 vignettes; J() and LU()

matlib 0.8.1

• remove inst/doc to satisfy CRAN

matlib 0.8.0

• add a vignette on properties of determinants (det-ex1)
• add a vignette on evaluation of determinants (det-ex2)
• add vignette on matrix inverse (inv-ex1)
• now use travis-ci to check builds
• add vignette on matrix inverse using EROs (inv-ex2)
• extended use of geometric diagrams in vignettes
• add vignette on generalized inverse (ginv)
• added J() for unit vectors, matrices
• added LU() for LU decomposition

Added regved3d for visualizing regression models

matlib 0.7.0

• use corner() in vectors3d.Rd
• added arc() for 2D, 3D vector diagrams to show angles between vectors
• added regvec3d() for 2D, 3D vector diagrams representing a bivariate multiple regression model, lm(y ~ x1 + x2) [thx: John Fox]
• added internal .arrows() to produce nice arrows in 2D vector() diagrams
• fixed numerous small problems in vector diagrams
• fixed some erroneous statements in vignettes
• showEqn() now aligns terms vertically and prints without quotes
• reversed sense of absolute in points_on_line() and clarified documentation

Adding vector diagram functions

matlib 0.6.0

• added vandermode() function
• added vec() convenience function to vectorize a matrix
• added is_square_matrix() tests
• added power_method(), power method for dominant eigenvector (thx: Gaston Sanchez)
• added arrows3d() for 3D geometric diagrams
• added vectors3d() for 3D geometric diagrams
• added corner() for 2D, 3D geometric diagrams
• added more documentation content to man/matlib.Rd from README.md

Some small additions

matlib 0.5.2

• added swp() function
• added vignette("gramreg") - Gram-Schmidt Orthogonalization and Regression

Update with new functions

matlib 0.5.1

• added len() convenience function for Euclidean lengths
• added plotEqn3d() function using rgl to plot equations in 3 unknowns
• reorganized matlib.R to become a package .Rd document
• renamed proj() -> Proj() to avoid conflict with stats::proj()
• added vectors() for plotting geometric diagrams
• added vignettes/linear-equations