We introduce concept maps as a tool to help people figure out what they’re trying to teach early in the instructor training course . Over the past few months, a group of certified instructors have been creating concept maps for re-use and to serve as examples for people who are trying to draw their own. We have collected some of these in https://github.com/rstudio/concept-maps/ under a Creative Commons license; we hope you’ll find them useful, and we welcome comments, improvements, and additions.
More On Certify
Recreating Septa Transit Timetables in Python
Recently, Rich and I were poking around transit data, and we were struck by the amount of structuring that goes into transit timetables.
For example, consider this weekend rail schedule table from SEPTA, Philadelphia’s transit agency.
Notice these big pieces:
The vertical text on the left indicating trains are traveling “TO CENTER CITY”. The blue header, and spanner columns (“Services” and “Train Number”) grouping related columns. The striped background for easier reading. Also the black background indicating stations in Center City (the urban core). Tables like this often have to be created in tools like Illustrator, and updated by hand. At the same time, when agencies automate table creation, they often sacrifice a lot of the assistive features and helpful affordances of the table.

Outgrowing your laptop with R and Positron
R-Ladies Abuja has posted a recording of a recent talk on Positron, and you can find it here!
PDF Accessibility and Standards
Quarto 1.9 brings PDF accessibility and standards support, building on new tagging features in LaTeX and Typst.



