I have spent much of my career working to bring abstract linear algebra and practical matrix computation closer together. This project is my latest effort.... read more >>

MATLAB has dozens of test matrices. Here are a few.... read more >>

When I tackle a Wordle puzzle, I like to make all the key decisions myself. My three assistants set up puzzles and suggest words when I ask for help, but I guide the actual solution. My assistants also make it possible for me to play Wordle anywhere, anytime, even when my laptop is in airplane mode. I don't need the New York Times or access to the Web.... read more >>

I am late joining the Wordle craze. Over a year ago, MATLAB programs for solving Wordle puzzles were described by Adam Filion as a guest blogger on Loren's blog and by Matt Tearle with a YouTube video. But my programs for Wordle Assistants are different. WordBot doesn't try to solve any puzzles and Words just supplies lists of possible words. I enjoy providing the solution logic myself.... read more >>

R2_D2 is is the name I've given a new MATLAB program that provides animations of 2-by-2 rotation and dilation matrices. I admit I chose "dilations" so the acronym would be memorable, but otherwise the code has little to do with the famous Star Wars droid.... read more >>

This is a quick look at Grafix, our tool for exploring matrices via 3-D computer graphics.... read more >>

The 4-by-4 matrices in the panels on the following screenshots are at the heart of computer graphics. They describe objects moving in three-dimensional space and are essential to MATLAB's Handle Graphics, to CAD (Computer Added Design) packages, to CGI (Computer Graphics Imagery) in films, and to most popular video games.... read more >>

I have made a half dozen blog posts about Rubik's Cube so far this year. And, during the MATLAB Central Mini Hack in October, I resurrected an old code about the Color Cube. Now, a combination of the two, Rubik/Color Qube, creates an elegant tool for investigating Matrices in Action.... read more >>

A 231-character static version of colorcubes in the current MiniHack generated quite a bit of interest. So I am posting the full version, where you can change number of cubes and the view point, at this link.... read more >>

This nifty graphics gem started with a contribution by Paul Villain to the MATLAB 2022 Mini Hack, currently taking place on MATLAB Central.... read more >>