v0.7.0

Feature release — a command-line tool.

New: ggplot-rs CLI (cli feature)

Plot parquet/CSV files and DuckDB SQL straight from the shell — DuckDB is the query engine, so --sql can read parquet globs, aggregate, and join.

cargo install ggplot-rs --features cli
ggplot-rs --parquet sales.parquet --describe                      # discover columns+types
ggplot-rs --parquet sales.parquet --x month --y revenue --geom line -o rev.png
ggplot-rs --sql "SELECT region, sum(qty) q FROM 'orders/*.parquet' GROUP BY 1" \
  --x region --y q --geom col --facet-wrap region -o orders.svg

• Full grammar via flags: aes (--x/--y/--color/--fill/--size/--shape/--group/--label), --geom (15 geoms), --facet-wrap/--facet-grid, --log-x/--log-y/--flip, labels, -o FILE/--stdout, --width/--height.
• Theming from the CLI: --theme <preset>, --palette <name> (Set1/Dark2/viridis/RdBu/…), --primary "r,g,b", and --theme-config <FILE> — a TOML/JSON file of element overrides for full custom themes.
• AI-ready: --describe lists columns+types for discovery; clear "column not found / unknown palette" errors; ships a Claude Code skill (.claude/skills/plot-data) teaching the describe → map → render workflow.
• clap + bundled duckdb (+ serde/toml for theme configs) are optional, off by default; the core library is unchanged.

Docs

Extended README gallery (15 panels, 3-per-row) plus a new themes gallery.

🤖 Generated with Claude Code