Variation along an ordering

<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@toclocoinc/lattice-grid@1.28.0/lattice-grid.min.css">

<script type="module">
  import { defineLatticeGrid } from 'https://cdn.jsdelivr.net/npm/@toclocoinc/lattice-grid@1.28.0/modules/webcomponent.esm.js';
  defineLatticeGrid();
</script>

<lattice-grid row-key="id" style="display: block; height: 460px"></lattice-grid>
<pre id="out" style="margin-top: 12px"></pre>

<script type="module">
  const el = document.querySelector('lattice-grid');
  el.config = {
    toolPanel: { side: 'left', panels: ['filters', 'columns'] },
    columns: [
      { field: 'date', title: 'Date', type: 'date', layout: { pin: 'start', width: 150 } },
      { field: 'price', title: 'Price', type: 'number' },
    ],
  };
  el.rows = rows;  // a price series, one row per day

  // el.grid is the live grid inside the element. The statistics API reads the
  // filtered rows, so every figure follows the filters. Recompute on change.
  const grid = el.grid;
  const out = document.getElementById('out');
  const report = () => {
    // by is required: reductions see rows as loaded, not in the grid's sort.
    out.textContent = JSON.stringify(
      grid.statistics.series('price', { by: 'date', periodsPerYear: 252 }), null, 2);
  };
  grid.on('filter:changed', report);  // every figure follows the filters
  report();
</script>