quarto-alt-text

# Write Chart Alt Text Generate accessible alt text for data visualizations in this project. ARGUMENTS - label: (optional) specific fig- label to generate alt text for - file: (optional) specific .qmd file to process ## Instructions When invoked, analyze the figure(s) and generate alt text following these guidelines: ### Key Advantage: Source Code Access Unlike typical alt text scenarios where you only see an image, **we have access to the code that generates each chart**. Use this to extract precise details: **From plotting code:** - Variable mappings → exact variable names for axes - Color/fill mappings → what color encodes - Plot type functions → scatter, histogram, line chart, etc. - Trend lines or fitted curves → overlaid statistical fits - Faceting/subplots → number of panels and what varies - Color scales → encoding scheme (sequential, diverging, categorical) - Axis labels and titles → customized labels **From data generation code:** - Random distributions → expected distribution shape - Transformations → what was done to data - Feature engineering → preprocessing applied - Filtering/subsetting → what subset is shown **From surrounding prose:** - Text before/after the chunk explains the **purpose** and **key insight** - Chapter context tells you what the figure is meant to teach - This is often the best source for the "key insight" part of alt text ### Three-Part Structure (Amy Cesal's Formula) 1. **Chart type** - First words identify the format 2. **Data de...