A simplified MATLAB interpreter of about 3,000 lines of TypeScript with no runtime dependencies. The playground has a script editor, a command window with a >> prompt and a workspace table, all running locally in your browser.
What it covers:
- Double, logical and char matrices, cells, structs and function handles, with MATLAB’s indexing rules:
end, logical masks, growth on assignment and deletion. - Operators with implicit expansion, and linear algebra including
A\b, LU, QR and eigenvalues. - Scripts with local functions, closures,
nargin/varargin,persistent/globalandtry/catch. - About 300 built-ins, from
polyfitandregexptocellfunandsprintf. - Plotting rendered to SVG:
plot,scatter,bar,histogram,stem,subplot,legend, log axes and TeX-style labels.
Not supported: complex numbers, N-D arrays, classes, and 3-D or surface plots.
The playground includes a searchable function reference covering all 370 built-ins and the basics of the language. Every entry has a runnable example, and the output shown next to it is produced live by the interpreter. Typing help name at the prompt prints the same entry.
The interpreter also runs as a command-line REPL in Node, with a test suite of 134 tests.