API Graphique à bulles

Cercles dimensionnés par valeur, attirés en grappe par gravité, chacun pouvant être divisé en un noyau réalisé et un anneau inexploité - voir la démo du Graphique à bulles.

Import

Web Component

import "@michi-vz/wc/bubble-chart";
// <michi-vz-bubble-chart> is now defined

Vanilla JS

import { mountBubbleChart } from "@michi-vz/core";

const chart = mountBubbleChart(el, props);

Props

Prop	Type	Default	Description
timeline	boolean | TimelinePeriodConfig	-	Opt-in "play through years": snapshots one period at a time over the distinct per-row `date` values, with a headless controller (`chart.timeline()`) plus an optional built-in play button + scrubber. Off by default; requires rows with `date`. Values tween between periods unless `interpolate: false`.
dataSet*	BubbleDataItem[]	-	Array of bubbles; each value sets the circle area (bubbles are gravity-packed into a cluster)
title	string	-	Optional chart title rendered above the plot
gravity	number	0.09	Strength of the pull toward the centre in [0,1] (default 0.09) - higher = tighter cluster ("suck together").
chargeStrength	number	0	Many-body charge: negative repels, positive attracts (default 0).
padding	number	2	Gap between packed circles in px (default 2).
fillRatio	number	0.62	Fraction of the plot area the bubbles should fill, in (0,1] (default 0.62).
layoutMode	"sync" | "async"	"sync"	How the force layout settles: "sync" (default; identical layout every render, blocks until settled) or "async" (the SAME deterministic settle, run in ~12ms slices so thousands of bubbles never freeze the page; the loading overlay shows while it runs).
settleTicks	number	400	Force-simulation ticks to settle (default 400); fewer = faster but looser.
splitLabels	[string, string]	["Realized", "Untapped"]	Names of the two split parts (default ["Realized","Untapped"]).
splitOpacity	number	0.35	Apparent colour strength of the untapped veil in [0,1] (default 0.35); rendered as solid colour under a white veil so it reads as a lighter tint of the same hue on any background.
showSplit	boolean	-	Render the realized/untapped split. Defaults to auto-on when any item has `partial`.
showLegend	boolean	false	Render a 2-swatch split legend (uses splitLabels).
showLabels	boolean	true	Draw the label inside each bubble when it is large enough (default true).
filter	{ limit: number; sortingDir: "asc" | "desc" }	-	Keep only the top-N bubbles by value.
valueFormatter	(n: number) => string	-	Formats a numeric value for labels and tooltips
tooltipFormatter	(bubble: BubbleContext) => string	-	Returns custom tooltip HTML for a hovered datum/mark (sanitized before it is inserted)
onHighlightItem	(labels: string[]) => void	-	Called when the hovered/highlighted label(s) change

Common props - shared by every chart (14)

Prop	Type	Default	Description
width	number	700	Chart width in pixels
height	number	500	Chart height in pixels
margin	Margin	{ top: 36, right: 8, bottom: 8, left: 8 }	Inner margins (top/right/bottom/left, in px) reserved for axes, titles, and labels
colors	string[]	-	Categorical palette for series/labels without an explicit colour or colorsMapping entry
colorsMapping	Record<string, string>	-	Explicit label -> colour map; takes precedence over the palette and per-item colours
highlightItems	string[]	-	Labels to emphasise; all other marks dim
disabledItems	string[]	-	Labels to hide and exclude from scales/stacks
renderer	"svg" | "canvas" | "webgpu"	"svg"	Render as inline SVG (default) or to a canvas (faster for large datasets); getContext() is identical either way
locale	string	-	BCP-47 locale used for number and date formatting
skipColorMappingDispatch	boolean	false	External-CSS mode: unmapped labels resolve to transparent and onColorMappingGenerated is not emitted, so mark colours come from your CSS via the data-label-safe contract
enableTransitions	boolean	true	Animate updates with CSS transitions (default true)
onColorMappingGenerated	(mapping: Record<string, string>) => void	-	Called with the resolved label -> colour map after the chart assigns colours
onChartDataProcessed	(context: ChartContext) => void	-	Called with the renderer-agnostic ChartContext whenever the data is (re)processed
onDataWarning	(warnings: DataWarning[]) => void	-	Called with any non-fatal data warnings (duplicate labels, non-finite values, non-monotonic dates, ...)

Événements

Le composant web émet ces CustomEvents en bubbling (le moteur expose les mêmes via les callbacks on* dans le tableau ci-dessus) :

Événement	Détail	Se déclenche quand
michi-vz:highlight	string[]	le surlignage au survol change
michi-vz:colormapping	Record<string, string>	une correspondance de couleurs est générée
michi-vz:dataprocessed	ChartContext	les données sont (re)traitées
michi-vz:datawarning	DataWarning[]	des avertissements sur les données d'entrée sont détectés

getContext()

mountBubbleChart(el, props).getContext() renvoie un BubbleChartContext agnostique du renderer : le tableau plat bubbles (value / partial / remainder / percent), splitLabels, des statistiques de synthèse (nombre de bulles, total, totaux par partie, plus grande bulle, plus grand reliquat), un résumé déterministe en langage naturel, et un tableau d'accessibilité. Voir Contexte LLM.

Source

Les props sont typées comme BubbleChartProps dans @michi-vz/core.