An SPC study: control, range, capability

<script>
  import { createGrid } from 'https://cdn.jsdelivr.net/npm/@toclocoinc/lattice-grid@1.27.0/lattice-grid.esm.min.js';
  import createLatticeAction from 'https://cdn.jsdelivr.net/npm/@toclocoinc/lattice-grid@1.27.0/modules/svelte.esm.min.js';
  import { createChart } from 'https://cdn.jsdelivr.net/npm/@toclocoinc/lattice-grid@1.27.0/modules/charts.esm.min.js';

  const lattice = createLatticeAction({ createGrid });

  let controlEl, mrEl, capEl;

  const config = {
    rowKey: 'id',
    columns: [
      { field: 'n', title: '#', type: 'number' },
      // The tolerance is declared once, on the column; every SPC figure reads it.
      { field: 'bore', title: 'Bore', type: 'millimetres', spec: { lower: 9.95, upper: 10.05, target: 10 } },
    ],
    rows,  // measured parts, in the order they were made
    // onGrid hands over the live grid the moment it is created. Every chart reads
    // it, so all three follow the grid's filters and sort.
    onGrid: (grid) => {
      // baseline fixes the limits on the first 30 readings, so a later drift breaks
      // a rule rather than widening the limits to absorb it.
      createChart({ grid, container: controlEl, type: 'control',     y: 'bore', baseline: 30, rules: 'nelson' });
      createChart({ grid, container: mrEl,      type: 'movingRange', y: 'bore' });
      createChart({ grid, container: capEl,     type: 'capability',  y: 'bore' });

      // The capability index against the declared tolerance, with the rule set applied.
      const c = grid.statistics.capability('bore', { rules: 'nelson', baseline: 30 });
      console.log(c.cpk, c.violations);
    },
  };
</script>

<svelte:head>
  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@toclocoinc/lattice-grid@1.27.0/lattice-grid.min.css">
</svelte:head>

<div bind:this={controlEl} style="height: 220px"></div>
<div style="display: flex; gap: 12px; margin-top: 12px">
  <div bind:this={mrEl} style="flex: 1; height: 200px"></div>
  <div bind:this={capEl} style="flex: 1; height: 200px"></div>
</div>
<div use:lattice={config} style="height: 320px; margin-top: 12px"></div>