@vitavision/charts

Small, hand-rolled SVG charts for the vitavision apps, on @vitavision/ui tokens.

bun add @vitavision/charts @vitavision/ui

@import "@vitavision/ui/styles.css";
@import "@vitavision/charts/styles.css";

Both imports are required: ui/styles.css defines the chrome and verdict tokens (--normal, --defect), and charts/styles.css defines the categorical series palette (--series-1 … --series-6, light and dark). SERIES_COLOURS, seriesColour(), NORMAL_COLOUR and DEFECT_COLOUR are var(--…) paint values that resolve through those tokens, so they follow the theme; use them anywhere a CSS colour or an SVG fill/stroke is accepted.

Charts — hand-rolled SVG over the pure domain/tick/project math in scale.ts: Frame + Legend (the axes/grid/label shell every chart composes), LineChart (multi-series, optional log y), StackedBars, Histogram (one distribution from raw values or pre-binned counts, with markers, a cursor bin and hover/pick), ScoreHistogram (two-class distribution with a threshold rule), and LineProfile (one or more series against arc length in pixels along a scan line or caliper axis, with detected edges drawn as labelled vertical rules).

Fitting a chart to its container: variant="fluid" takes the container's width at a fixed height, for a chart in a resizable inspector.

Interaction on LineChart, LineProfile and Histogram:

• onHover draws a crosshair with a value readout, and onPick reports a click's x.
• cursor draws an x chosen elsewhere, such as the pointer on the canvas a profile came from.
• bands shade x ranges, and markers tick positions on the x axis.

Sequential colour maps: colormap("viridis" | "cividis", t) and colormapValue(map, value, domain), for a magnitude such as an error, a validity or a confidence. ColormapLegend shows the scale with its units; a map is never shown without one.

License

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE)
• MIT license (LICENSE-MIT)

at your option.

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in this package by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.