demo D183
Statistical values in a column
A column's median, deviation and percentile, read into computed columns
value.compute
Loading a live grid…
The configuration
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@toclocoinc/lattice-grid@1.27.0/lattice-grid.min.css">
<script type="module">
import { defineLatticeGrid } from 'https://cdn.jsdelivr.net/npm/@toclocoinc/lattice-grid@1.27.0/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: 'symbol', title: 'Symbol', layout: { pin: 'start', width: 120 } },
{ field: 'price', title: 'Price', type: 'number' },
],
};
el.rows = rows; // trading book records
// reduce() runs a named figure over the filtered rows. el.grid is the live
// grid inside the element, so every figure follows the filters. Recompute
// whenever they change.
const grid = el.grid;
const out = document.getElementById('out');
const report = () => {
out.textContent = 'median ' + grid.statistics.reduce('price', 'median')
+ ' · stddev ' + grid.statistics.reduce('price', 'stddev')
+ ' · p90 ' + grid.statistics.reduce('price', 'p90');
};
grid.on('filter:changed', report);
report();
</script>