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Charts

Free

Chart Tooltip with Line Indicator

Q: How do I switch the indicator?

Set indicator to "line" in ChartContainer's tooltip options. It's one of three: dot (the default), line, a 4px-wide bar as tall as the row, and dashed, an outline with a dashed border.

Q: What does the dashed indicator look like?

dashed draws a narrow outline with a dashed border in the series color. It's the usual pairing for dashed strokes, such as a forecast drawn beside actuals.

Q: Where does the indicator's color come from?

The indicator is the series color, var(--color- ), the same variable the mark paints with. Change color in chartConfig and both follow.

Q: What changes with a single series?

When the tooltip has one row and the indicator is line or dashed, shadcn's layout moves the label inside that row, beside the indicator, so a one-series tooltip stays two lines tall.

A tooltip that marks each series with a thin vertical bar instead of a dot, the indicator that suits line and area charts, in Vue with TanStack Charts.

PreviewCode

About

Same tooltip, different mark: each series gets a narrow vertical bar in its color, as tall as its row, instead of a square dot. Use it on line and area charts, where a stroke reads more naturally than a filled square.

The label and the rows don't change. Only the indicator does, so you can compare it with the default on the same stack of running and swimming.

Installation

Free with an account. It carries your token, so the CLI installs everything in one go.

Google GitHub

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Usage

<script setup lang="ts">
import ChartTooltipIndicatorLine from "@/components/charts/chart-tooltip-indicator-line.vue";
</script>

<template>
  <ChartTooltipIndicatorLine />
</template>

Customize

indicator: "line" in ChartContainer's tooltip options is the only change from the default.
The line is w-1 and stretches to the row's height, painted in the series color.
indicator also takes dot and dashed; pick the one that matches the mark.
The rows' order and values come from the focused day's points, the same as the default.

FAQ

How do I switch the indicator?

Set indicator to "line" in ChartContainer's tooltip options. It's one of three: dot (the default), line, a 4px-wide bar as tall as the row, and dashed, an outline with a dashed border.

When should I use the line instead of the dot?

A line echoes a stroke, so it matches line and area charts, where a square dot hints at a bar that isn't there. On bars, the dot is the closer match; this chart shows the line on bars only to compare.

What does the dashed indicator look like?

dashed draws a narrow outline with a dashed border in the series color. It's the usual pairing for dashed strokes, such as a forecast drawn beside actuals.

Where does the indicator's color come from?

The indicator is the series color, var(--color-<key>), the same variable the mark paints with. Change color in chartConfig and both follow.

What changes with a single series?

When the tooltip has one row and the indicator is line or dashed, shadcn's layout moves the label inside that row, beside the indicator, so a one-series tooltip stays two lines tall.

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.

class?string

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

#default?slot

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

tooltip?(ChartTooltipContentOptions & { class?: string }) | false

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

Type: (ChartTooltipContentOptions & { class?: string }) | false

#tooltip?slot (ChartTooltipBodySlotContext)

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

Type: slot (ChartTooltipBodySlotContext)

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.

EventType

@focus-change?(point: ChartPoint | null) => void

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

Type: (point: ChartPoint | null) => void

@focus-group-change?(points: readonly ChartPoint[]) => void

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

Type: (points: readonly ChartPoint[]) => void

@select?(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?slot ({ value, item, index })

A row's content in place of its indicator, name and value, as shadcn's formatter: a unit, a currency, a total row. A scoped slot; the row's series key is item.key.

class?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"

class?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-vue-next 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 }

Chart Tooltip
Tooltips
The default tooltip: a label, then each series with its dot.
Chart Tooltip without Indicator
Tooltips
A tooltip with no color indicator beside the series.
Area Chart
Area charts
One series as a smooth filled curve over six months.
Multiple Line Chart
Line charts
Two series as lines on the same axes.
Multiple Bar Chart
Bar charts
Two series grouped side by side for each month.
Chart Tooltip with Custom Label
Tooltips
A tooltip whose label comes from the chart's config.

All 70 charts

Preview

About

Installation

Usage

Customize

FAQ

How do I switch the indicator?

When should I use the line instead of the dot?

What does the dashed indicator look like?

Where does the indicator's color come from?

What changes with a single series?

API Reference

ChartContainer

ChartTooltipContent

ChartLegend

ChartConfig

Helpers

Related

Chart Tooltip

Chart Tooltip without Indicator

Area Chart

Multiple Line Chart

Multiple Bar Chart

Chart Tooltip with Custom Label