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Charts

Free

Stacked Area Chart

Two series stacked into one filled total, so you read each part and the whole across six months. Desktop and mobile visitors in React.

Framework
Charting library

Preview

Preview width

About

Use it when the total matters and so does its split: traffic by device, revenue by plan, tickets by team. The top edge is the total; the boundary inside it is the split. For shares rather than amounts, use the expanded version. For series that don't add up to anything, use a multiple line chart.

Mobile sits at the bottom with desktop stacked on it, each a smooth curve with a 40% fill in its own color. Hovering a month lists both values with a dot beside each.

Installation

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Usage

import { ChartAreaStacked } from "@/components/charts/chart-area-stacked";
<ChartAreaStacked />

Customize

  • fold turns each month's desktop and mobile fields into rows of { month, series, visitors }, and stackRowsY stacks them: each row gets a y1 and a y2, mobile first, as its order says.
  • One areaY mark fills each band from y1 to y2 with z: "series". color: chartColors(chartConfig, ["mobile", "desktop"]) in the definition paints the series with var(--color-mobile) and var(--color-desktop), in tooltip order.
  • A decorative lineY along y2 draws each band's top edge, and a dot inside whenFocused marks the hovered month.
  • The tooltip uses the default dot indicator and shows each band's own value, the segment's length rather than its top edge.

FAQ

How do I choose which series sits at the bottom?

stackRowsY's order lists the series from the bottom up: ["mobile", "desktop"] puts mobile underneath. Swap the two to put desktop at the bottom; the colors stay with their keys.

How do I stack a third series?

Add the field to every row, to the fields that fold reads, to stackRowsY's order and to the keys chartColors gets, with a chartConfig entry on var(--chart-3). Past two series, readers need a key for the colors: add a ChartLegend, as the Area Chart with Legend does.

How do I show the total in the tooltip?

The tooltip lists one row per band, each with its own value, not the running sum. For a total row, give ChartTooltipContent a formatter that adds one after the last item, as the Advanced Tooltip chart does: item.point.datum is the folded row, which keeps the month's desktop and mobile.

Can the areas overlap instead of stacking?

Skip stackRowsY and give areaY the folded rows with y1: 0 and y2: "visitors". Explicit ends opt out of stacking, so each band starts at zero. Lower fillOpacity so the back one shows through.

How do the colors change in dark mode?

chartConfig points desktop at var(--chart-1) and mobile at var(--chart-2). Both tokens have a dark value in your theme, so the bands change with the .dark class. Give an entry theme: { light, dark } to pick both colors yourself.

Can I step through it with the keyboard?

Tab into the chart, then Left and Right step through the months. Each step focuses both bands at once, so the tooltip reads mobile and desktop together; Home and End jump to January and June.

API Reference

ChartContainer

<div> data-slot="chart"

PropType
configChartConfig

Each series' label, icon and color, read by the tooltip and the legend.

definitionChartDefinition

The chart: defineChart(spec, chartTooltip()), its data, marks, scales and axes, and the tooltip's focus.

ariaLabelstring

The chart's accessible name: the card's title.

ariaDescription?string

The chart's accessible description.

className?string

The container's size: aspect-auto h-[250px] w-full, mx-auto aspect-square max-h-[250px]. It's aspect-video by default.

children?ReactNode

What sits under the chart inside the container: a ChartLegend.

tooltip?ChartTooltipContentProps | false

ChartTooltipContent's props (indicator, hideLabel, formatter…) for the default body, or false for TanStack's own tooltip body.

Type
ChartTooltipContentProps | false
renderTooltip?(context: ChartTooltipBodyRenderContext) => ReactNode

A whole tooltip body of your own, in place of ChartTooltipContent: it gets the focused points (each with its datum, group and color).

Type
(context: ChartTooltipBodyRenderContext) => ReactNode
defaultIndex?number

The category whose tooltip shows before any pointer, as Recharts' defaultIndex.

height?number

A fixed height in pixels for the chart, in place of the container's.

aspectRatio?number

A width-to-height ratio for the chart, in place of the container's height.

initialWidth?number

The width the chart renders at before it's measured.

onFocusChange?(point: ChartPoint | null) => void

Called as the focused point changes: a pointer, a key or a tap.

Type
(point: ChartPoint | null) => void
onFocusGroupChange?(points: readonly ChartPoint[]) => void

Called with every point at the focused category (a stacked or grouped chart's).

Type
(points: readonly ChartPoint[]) => void
onSelect?(point: ChartPoint | null) => void

Called when a point is clicked or picked with Enter.

Type
(point: ChartPoint | null) => void
CSS variableType
--color-<key>?color

Each config key's color (its theme color in light and dark), set on the container: the marks paint with var(--color-<key>).

ChartTooltipContent

<div>

PropType
pointsreadonly ChartPoint[]

The focused points, from the tooltip's context. ChartContainer passes them to its default body; a body of your own passes its context's.

indicator?"dot" | "line" | "dashed"

The indicator's shape beside each row.

Type
"dot" | "line" | "dashed"
Default
"dot"
hideLabel?boolean

Hides the label above the rows (the focused category).

Default
false
hideIndicator?boolean

Hides each row's color indicator.

Default
false
label?string

The label's text in place of the focused category, looked up in config.

labelKey?string

The datum field (or config key) the label is read from, looked up in config.

nameKey?string

The datum field (or config key) each row's series is read from: a pie's browser.

valueKey?string

The datum field each row's value is read from, for points that carry geometry rather than values (a pie's, from pie()).

color?string

One indicator color for every row, in place of each series' own.

labelFormatter?(label: string, points: readonly ChartPoint[]) => string

Formats the label (the config's label or the category), with the rows' points: a date written out, a unit.

Type
(label: string, points: readonly ChartPoint[]) => string
formatter?(value: number | string, name: string, item: ChartTooltipItem, index: number) => ReactNode

A row's content in place of its indicator, name and value, as shadcn's formatter: a unit, a currency, a total row.

Type
(value: number | string, name: string, item: ChartTooltipItem, index: number) => ReactNode
className?string

Classes for the tooltip's card.

ChartLegend

<div>

PropType
config?ChartConfig

The series to list: the container's config by default.

keys?readonly string[]

The series keys to list, in order: every key with a color by default.

hideIcon?boolean

Hides each series' icon (from config), leaving its color swatch.

Default
false
verticalAlign?"top" | "bottom"

Above the chart or under it.

Type
"top" | "bottom"
Default
"bottom"
className?string

Classes for the legend's row.

ChartConfig

KeyType
label?string

The series' name in the tooltip and the legend.

icon?Component

An icon beside its name in the legend and the tooltip (a lucide-react icon).

color?string

Its color in both themes: a token (var(--chart-1)) or any CSS color.

theme?{ light: string; dark: string }

A color for each theme, in place of color.

Helpers

ExportType
chartTooltip?(settings?: ChartTooltipSettings) => ChartDefinitionOptions

defineChart's second argument for a chart with a tooltip: what a pointer or a key focuses (group-x, each category's series, by default), the focus ring, and the host ChartContainer draws its body in.

Type
(settings?: ChartTooltipSettings) => ChartDefinitionOptions
chartTheme?ChartTheme

defineChart's theme in the site's tokens: the text, the grid and the palette (--chart-1 to --chart-5).

chartColors?(config: ChartConfig, keys?: readonly string[]) => { domain: string[]; range: string[] }

defineChart's color: each series key (in config order, or keys') painted var(--color-<key>), for marks with a color channel.

Type
(config: ChartConfig, keys?: readonly string[]) => { domain: string[]; range: string[] }
chartLinearScale?() => LinearScale

A value axis drawn as Recharts draws its default one: zero in the domain, five nice ticks. Pass it as a factory: y: { scale: chartLinearScale }.

Type
() => LinearScale
curveNatural?CurveFactory

D3's natural curve, for a smooth line or area: curve: d3Curve(curveNatural).

curveStep?CurveFactory

D3's step curve, for a line or area that holds each value: curve: d3Curve(curveStep).

curveMonotoneX?CurveFactory

D3's monotone curve, smooth without overshooting a point: curve: d3Curve(curveMonotoneX).

curveLinearClosed?CurveFactory

D3's closed linear curve: a radar's polygon (curve: curveLinearClosed on radialLine and radialArea).

useChart?() => { config: ChartConfig }

The config of the ChartContainer around a component of your own (a custom tooltip body or legend).

Type
() => { config: ChartConfig }
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