Vega Charts with Dyalog: Data Visualization Using Vega-Lite and APL

Explore data visualization using Vega-lite in this 24-minute conference talk from Dyalog '23. Learn about the high-level data visualization grammar and how to create charts using JSON specifications. Discover how to leverage the HTMLRenderer to generate web-ready graphics directly from APL data. Follow along as Rich Park demonstrates a simple interface for producing various types of graphs, including bar charts, line graphs, and pie charts. Gain insights into topics such as the grammar of graphics, Vega visualization grammar, data injection as CSV, specification namespaces, and providing additional options. Understand common pitfalls like the Morris Mistake and get a glimpse of future developments in this field.

The grammar of graphics
Vega visualisation grammar
Vega-Lite high level specification
Interface overview
Tables and data types
Injecting data as CSV
Default encoding of columns in a bar chart
Specification namespaces
Line graph and multiple series
Simple charts with mark type
Pie chart
Providing additional options
The Morris Mistake
Future work