Sassy 'UML' Diagrams

A tool for drawing sassy 'UML' diagrams based on a simple syntax, see <>. Supports styling, R Markdown and exporting diagrams in the PNG format.


Reference manual

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0.2.3 by Andrie de Vries, a year ago

Report a bug at

Browse source code at

Authors: Andrie de Vries [aut, cre] , Javier Luraschi [aut] , Daniel Kallin [cph] (nomnoml.js library , , RStudio [cph, fnd]

Documentation:   PDF Manual  

MIT + file LICENSE license

Imports htmlwidgets, png, webshot, lifecycle, rlang

Suggests V8, knitr, rmarkdown, testthat, shinytest, covr, spelling

System requirements: PhantomJS ( for taking screenshots

Imported by flow, supreme.

See at CRAN