Charts · Fields & networks
DelaunayChart
The triangulation of x-y points, or its Voronoi cells. Family: Fields & networks · chart 58 of 60.
| label | x | y | degree |
|---|
| label | x | y | degree |
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| label | x | y | degree |
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| label | x | y | degree |
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Example
The chart above, in each framework. Pick a framework once and every example on the site follows it. `mesh="voronoi"` draws the Voronoi cells instead of the triangulation.
npm install @silverpoint/react @silverpoint/grounds @silverpoint/fontsimport '@silverpoint/fonts/fonts.css';
import '@silverpoint/grounds/styles.css';
import { DelaunayChart } from '@silverpoint/react/delaunay-chart';
const data = [
{ label: 'P01', x: 45, y: 27.3 },
{ label: 'P02', x: 37.4, y: 55.6 },
{ label: 'P03', x: 90.6, y: 39.1 },
{ label: 'P04', x: 27.4, y: 1.7 },
{ label: 'P05', x: 0.2, y: 31.8 },
{ label: 'P06', x: 40.8, y: 17.6 },
{ label: 'P07', x: 63.2, y: 56.9 },
{ label: 'P08', x: 65.5, y: 52.9 },
{ label: 'P09', x: 38.7, y: 42.3 },
{ label: 'P10', x: 6.1, y: 17.1 },
{ label: 'P11', x: 92.8, y: 39 },
{ label: 'P12', x: 54.3, y: 58 },
// … 48 more rows of the same shape
];
export default function App() {
return (
<div style={{ width: 480 }}>
<DelaunayChart
data={data}
xKey="x"
yKey="y"
labelKey="label"
title="Stations"
/>
</div>
);
}npm install @silverpoint/vue @silverpoint/grounds @silverpoint/fonts<script setup lang="ts">
import '@silverpoint/fonts/fonts.css';
import '@silverpoint/grounds/styles.css';
import { SpDelaunayChart } from '@silverpoint/vue/delaunay-chart';
const data = [
{ label: 'P01', x: 45, y: 27.3 },
{ label: 'P02', x: 37.4, y: 55.6 },
{ label: 'P03', x: 90.6, y: 39.1 },
{ label: 'P04', x: 27.4, y: 1.7 },
{ label: 'P05', x: 0.2, y: 31.8 },
{ label: 'P06', x: 40.8, y: 17.6 },
{ label: 'P07', x: 63.2, y: 56.9 },
{ label: 'P08', x: 65.5, y: 52.9 },
{ label: 'P09', x: 38.7, y: 42.3 },
{ label: 'P10', x: 6.1, y: 17.1 },
{ label: 'P11', x: 92.8, y: 39 },
{ label: 'P12', x: 54.3, y: 58 },
// … 48 more rows of the same shape
];
</script>
<template>
<div style="width: 480px">
<SpDelaunayChart
:data="data"
x-key="x"
y-key="y"
label-key="label"
title="Stations"
/>
</div>
</template>npm install @silverpoint/angular @silverpoint/grounds @silverpoint/fonts// src/styles.css:
// @import '@silverpoint/fonts/fonts.css';
// @import '@silverpoint/grounds/styles.css';
import { Component } from '@angular/core';
import { SpDelaunayChart } from '@silverpoint/angular/delaunay-chart';
@Component({
selector: 'app-root',
imports: [SpDelaunayChart],
template: `
<div style="width: 480px">
<sp-delaunay-chart
[data]="data"
xKey="x"
yKey="y"
labelKey="label"
title="Stations"
/>
</div>
`,
})
export class App {
protected readonly data = [
{ label: 'P01', x: 45, y: 27.3 },
{ label: 'P02', x: 37.4, y: 55.6 },
{ label: 'P03', x: 90.6, y: 39.1 },
{ label: 'P04', x: 27.4, y: 1.7 },
{ label: 'P05', x: 0.2, y: 31.8 },
{ label: 'P06', x: 40.8, y: 17.6 },
{ label: 'P07', x: 63.2, y: 56.9 },
{ label: 'P08', x: 65.5, y: 52.9 },
{ label: 'P09', x: 38.7, y: 42.3 },
{ label: 'P10', x: 6.1, y: 17.1 },
{ label: 'P11', x: 92.8, y: 39 },
{ label: 'P12', x: 54.3, y: 58 },
// … 48 more rows of the same shape
];
}pip install reflex-silverpoint-reactimport reflex as rx
from reflex_silverpoint_react import delaunay_chart
DATA = [
{"label": "P01", "x": 45, "y": 27.3},
{"label": "P02", "x": 37.4, "y": 55.6},
{"label": "P03", "x": 90.6, "y": 39.1},
{"label": "P04", "x": 27.4, "y": 1.7},
{"label": "P05", "x": 0.2, "y": 31.8},
{"label": "P06", "x": 40.8, "y": 17.6},
{"label": "P07", "x": 63.2, "y": 56.9},
{"label": "P08", "x": 65.5, "y": 52.9},
{"label": "P09", "x": 38.7, "y": 42.3},
{"label": "P10", "x": 6.1, "y": 17.1},
{"label": "P11", "x": 92.8, "y": 39},
{"label": "P12", "x": 54.3, "y": 58},
# … 48 more rows of the same shape
]
def index() -> rx.Component:
return rx.box(
delaunay_chart(
data=DATA,
x_key="x",
y_key="y",
label_key="label",
title="Stations",
),
width="480px",
)
app = rx.App()
app.add_page(index)Import
Each chart has its own subpath, so a bundle only carries the charts it uses. Every adapter also exports every chart from its barrel.
| Framework | Import |
|---|---|
| React | import { DelaunayChart } from '@silverpoint/react/delaunay-chart'; |
| Vue | import { SpDelaunayChart } from '@silverpoint/vue/delaunay-chart'; |
| Angular | import { SpDelaunayChart } from '@silverpoint/angular/delaunay-chart'; // <sp-delaunay-chart> |
| Reflex | from reflex_silverpoint_react import delaunay_chart |
Props
The props DelaunayChart adds to the ones every chart takes. Accessor props (…Key, keys, names) name fields of your rows and are ignored without data.
| React / Angular | Vue | Reflex | Type | Description |
|---|---|---|---|---|
xKey | x-key | x_key | Accessor<number | null | undefined> | — |
yKey | y-key | y_key | Accessor<number | null | undefined> | — |
labelKey | label-key | label_key | Accessor<string | null | undefined> | — |
mesh | mesh | mesh | 'delaunay' | 'voronoi' | — |
Common props
Every chart also takes these. Framework conventions: camelCase in React and Angular, kebab-case in Vue templates, snake_case in Reflex. Read more about them.
Show the 22 common props
| React / Angular | Vue | Reflex | Type | Description |
|---|---|---|---|---|
data | data | data | readonly Datum[] | Rows to draw. If omitted, the demo dataset is rendered (REQ-093) and the accessor props (…_key, keys, names) are ignored. |
ground | ground | ground | GroundRef | Style ground: silverpoint or cyanotype, or a ground object. Defaults to the app provider's, or silverpoint. |
substrate | substrate | substrate | SubstrateName | Prepared substrate within the ground (REQ-046). |
mode | mode | mode | InkMode | ink by default; precision disables inking (REQ-021). |
seed | seed | seed | Seed | Seed. If omitted, it is derived from id stably (REQ-003). |
id | id | id | string | Stable identifier. If omitted, it is generated deterministically. |
height | height | height | number | Height of the drawing area in px. Width is the container's unless pinned. |
width | width | width | number | — |
chrome | chrome | chrome | 'card' | 'bare' | card draws the full frame; bare only the drawing area (REQ-095). |
hatchFill | hatch-fill | hatch_fill | 'tile' | 'per-shape' | How areas are filled (REQ-029). |
title | title | title | string | — |
badge | badge | badge | string | — |
value | value | value | string | number | — |
unit | unit | unit | string | — |
footerLeft | footer-left | footer_left | string | — |
footerRight | footer-right | footer_right | string | — |
label | label | label | string | Accessible name. If omitted, it is derived from title (REQ-120). |
description | description | description | string | Long description for screen readers (REQ-120). |
dataTable | data-table | data_table | 'visible' | 'hidden' | 'none' | Tabular alternative; hidden leaves it for assistive technology only (REQ-121). |
locale | locale | locale | string | — |
numberFormat | number-format | number_format | Intl.NumberFormatOptions | — |
className | class-name | class_name | string | — |
Events
Pointer and keyboard exploration are built in. The item under the pointer or focus is reported, and a click, Enter or Space selects it. The item is { seriesKey, index, datum, value, point: { x, y } }.
| Framework | Active item | Selection | Custom readout |
|---|---|---|---|
| React | onActiveChange | onSelect | tooltip={(item, readout) => …} |
| Vue | @active-change | @select | <template #tooltip> |
| Angular | (activeChange) | (select) | <ng-template spTooltip> |
| Reflex | on_active_change | on_select | tooltip=tooltip_template(…) |
Report it
Found something wrong with DelaunayChart? Open an issue on GitHub — the form comes pre-filled with the chart and the version.