skills

Generates OpenChart (https://github.com/tryopendata/openchart) chart, table, graph, sankey, tilemap, and geo map specs from data, and guides editorial design decisions. Use when creating visualizations, building charts, rendering data tables, generating VizSpec JSON, creating network graphs, building sankey/flow diagrams, building US state tile grid maps, building choropleth or symbol maps from TopoJSON, answering questions about OpenChart types and encoding rules, or making design decisions about chart type selection, color strategy, typography, annotations, and editorial framing. Also covers custom D3.js infographics for cases beyond declarative specs.

Query the OpenData API for data research and analysis. Use when fetching dataset rows, filtering, sorting, aggregating, inspecting columns, composing cross-dataset joins, exploring graph intelligence, or building data pipelines against OpenData endpoints.

Generates and edits SVG logos, icons, and graphics. Use when creating SVG files, designing logos or icons, writing path data, optimizing SVGs, building icon systems, animating SVG elements, or modifying existing vector graphics. Covers path commands, shape primitives, styling, accessibility, gradients, masks, sprites, optimization, and animation (CSS keyframes, GPU acceleration, staggering, easing, SVG-specific techniques).