demo D167

Gauge, funnel and radar in Svelte

The specialist types and what each is for

type: 'gauge' · 'funnel' · 'radar'

This shows three specialist charts and what each is for: a gauge for one figure against a target, a funnel for stages that narrow, and a radar for several measures at once. It helps you match an unusual shape of data to the chart built for it.

Building…

Loading a live grid…

This is the Svelte version. A use action attaches the grid to a plain element, so no framework runtime is passed in and the component stays small, while the configuration is ordinary Svelte state.

The configuration

<script>
  import { createGrid } from 'https://cdn.latticegrid.dev/lattice-grid@1.107.0/lattice-grid.esm.min.js';
  import createLatticeAction from 'https://cdn.latticegrid.dev/lattice-grid@1.107.0/modules/svelte.esm.min.js';
  import { createChart } from 'https://cdn.latticegrid.dev/lattice-grid@1.107.0/modules/charts.esm.min.js';

  const lattice = createLatticeAction({ createGrid });

  let gaugeEl, funnelEl, radarEl;

  const config = {
    rowKey: 'id',
    columns: [
      { field: 'circuit', title: 'Circuit', layout: { width: 180 } },
      { field: 'region', title: 'Region', filter: { type: 'set' } },
      { field: 'status', title: 'Status', filter: { type: 'set' } },
      { field: 'bandwidth', title: 'Bandwidth', type: 'number' },
      { field: 'utilisation', title: 'Utilisation', type: 'number', format: { decimals: 1, suffix: '%' } },
      { field: 'charge', title: 'Monthly charge', type: 'number',
        format: { style: 'currency', currency: 'GBP' }, total: 'sum' },
    ],
    rows,  // an array of circuit records
    // onGrid hands over the live grid the moment it is created. A gauge reads one
    // measure, y; funnel and radar read x and y. All three follow the grid's
    // filters and sort.
    onGrid: (grid) => {
      createChart({ grid, container: gaugeEl,  type: 'gauge',  y: 'charge' });
      createChart({ grid, container: funnelEl, type: 'funnel', x: 'status', y: 'charge' });
      createChart({ grid, container: radarEl,  type: 'radar',  x: 'region', y: 'charge' });
    },
  };
</script>

<svelte:head>
  <link rel="stylesheet" href="https://cdn.latticegrid.dev/lattice-grid@1.107.0/lattice-grid.min.css">
</svelte:head>

<div style="display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; height: 240px">
  <div bind:this={gaugeEl}></div>
  <div bind:this={funnelEl}></div>
  <div bind:this={radarEl}></div>
</div>
<div use:lattice={config} style="height: 340px; margin-top: 14px"></div>