demo D255

Dumbbell chart in ESM

Two dots joined by a bar per row, so the distance from before to after is the picture

type: 'dumbbell', x, start, end

This draws two dots joined by a bar per row, so the distance from a before value to an after value is the picture. It shows change per item at a glance, so the size of each move reads as the length of its bar.

Building…

Loading a live grid…

This is the ES module version. The grid is imported straight from a CDN as a module, the same configuration as the vanilla tab without a global script tag, so it drops into any bundler or a bare module script.

The configuration

<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@toclocoinc/lattice-grid@1.71.0/lattice-grid.min.css">

<div id="grid" style="height: 320px"></div>
<div id="chart" style="height: 320px"></div>

<script type="module">
  import { createChart } from '@toclocoinc/lattice-grid/modules/charts';
  import '@toclocoinc/lattice-grid/modules/chart-dumbbell';  // opt in to the dumbbell type

  const grid = createGrid(document.getElementById('grid'), {
    rowKey: 'id',
    columns: [
      { field: 'route', title: 'Route' },
      { field: 'before', title: 'Before (ms)', type: 'number', total: 'avg' },
      { field: 'after', title: 'After (ms)', type: 'number', total: 'avg' },
    ],
    rows,  // one row a route: route, before, after
  });

  // start and end are the two dots; the bar between them is the change.
  createChart({
    grid,
    container: document.getElementById('chart'),
    type: 'dumbbell',
    x: 'route',
    start: 'before',
    end: 'after',
    title: 'Load time, before and after',
  });
</script>