demo D201

Is this column normal? in htmx

A Q-Q plot against a line through the quartiles

type: 'qq', y

This draws a Q-Q plot of a column against a line through its quartiles, to judge whether it is normally distributed. It answers 'is this column normal' visually, so you can see how far the data departs from the assumption before relying on it.

Building…

Loading a live grid…

This is the htmx version. A server-rendered table is upgraded in place, so the page is readable before any script runs and gains the full grid when the module loads, which suits a progressively enhanced app.

The configuration

<link rel="stylesheet" href="https://cdn.latticegrid.dev/lattice-grid@1.108.0/lattice-grid.min.css">

<div id="chart" style="height: 340px"></div>
<!-- A real, server-rendered table: readable with JavaScript off. data-field on
     each header names the column that cell becomes, and data-id on each row is
     the key the grid carries it under. -->
<table id="qq-plot-table" data-lattice-grid>
  <thead>
    <tr>
      <th data-field="symbol">Symbol</th>
      <th data-field="desk">Desk</th>
      <th data-field="price">Price</th>
      <th data-field="bid">Bid</th>
      <th data-field="volume">Volume</th>
      <th data-field="notional">Notional</th>
    </tr>
  </thead>
  <tbody>
    <tr data-id="INS-0000000"><td>ELMW.G0</td><td>Rates</td><td>462.0258</td><td>461.2688</td><td>239420</td><td>110618217</td></tr>
    <tr data-id="INS-0000001"><td>RVNS.A1</td><td>Credit</td><td>241.8711</td><td>241.7978</td><td>119353</td><td>28868041</td></tr>
    <tr data-id="INS-0000002"><td>NRTH.E2</td><td>Commodities</td><td>98.9614</td><td>98.8353</td><td>160242</td><td>15857773</td></tr>
    <!-- the rest of the rows, rendered by your server -->
  </tbody>
</table>

<script type="module">
  import { hydrateTable } from 'https://cdn.latticegrid.dev/lattice-grid@1.108.0/modules/htmx.esm.min.js';
  import { createChart } from 'https://cdn.latticegrid.dev/lattice-grid@1.108.0/modules/charts.esm.min.js';

  // The markup carries the rows; a server-rendered table's column types are
  // declared in the config hydrateTable takes. The grid replaces the table
  // where it stood.
  const grid = hydrateTable(document.getElementById('qq-plot-table'), {
    columns: [
      { field: 'symbol', title: 'Symbol', layout: { width: 120 } },
      { field: 'desk', title: 'Desk', filter: { type: 'set' } },
      { field: 'price', title: 'Price', type: 'number' },
      { field: 'bid', title: 'Bid', type: 'number' },
      { field: 'volume', title: 'Volume', type: 'number' },
      { field: 'notional', title: 'Notional', type: 'number',
        format: { style: 'currency', currency: 'USD' }, total: 'sum' },
    ],
  });

  // A quantile-quantile plot ranks the measure against a normal line: points on
  // the line read as normal, curvature reads as skew. It reads the same grid, so
  // it follows the filters in place.
  createChart({ grid, container: '#chart', type: 'qq', y: 'price' });
</script>