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demo D178

Charts with no grid on screen: JavaScript Data Grid Demo

The data engine driving charts on its own

createHeadlessGrid

This drives charts from the data engine alone, with no grid on screen. It shows that the charting and the data model do not need a visible table, so you can chart a dataset headlessly.

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The configuration

<link rel="stylesheet" href="https://cdn.latticegrid.dev/lattice-grid@1.103.2/lattice-grid.min.css">
<script src="https://cdn.latticegrid.dev/lattice-grid@1.103.2/lattice-grid.min.js"></script>

<div style="display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; height: 260px">
  <div id="by-region"></div>
  <div id="by-status"></div>
  <div id="distribution"></div>
</div>

<script type="module">
  import { createChart } from '@toclocoinc/lattice-grid/modules/charts';

  const 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: 'charge', title: 'Monthly charge', type: 'number', format: { style: 'currency', currency: 'GBP' }, total: 'sum' },
  ];

  // createHeadlessGrid holds and shapes the data with no table drawn at all.
  // The charts read it exactly as they read a visible grid, with the same
  // follow behaviour: filter the headless grid and every chart redraws.
  const grid = LatticeGrid.createHeadlessGrid({ rowKey: 'id', columns, rows });  // circuit records

  createChart({ grid, container: document.getElementById('by-region'), type: 'bar',       x: 'region', y: 'charge', title: 'by region' });
  createChart({ grid, container: document.getElementById('by-status'), type: 'donut',     x: 'status', y: 'charge', title: 'by status' });
  createChart({ grid, container: document.getElementById('distribution'), type: 'histogram', y: 'charge',           title: 'distribution' });
</script>