demo D179

Statistics in the totals row in Angular

Median, percentiles, deviation and spread, each over the filtered rows

total: 'median' · 'p95' · 'stddev'

This grid puts statistics in the totals row, median, percentiles, standard deviation and spread, each computed over the filtered rows. It gives a footer that summarises the shape of a column, not just its sum, and follows the filter as it changes.

Building…

Loading a live grid…

This is the Angular version. A standalone component takes the whole configuration through one config input, surfaces grid events as outputs, and exposes the live grid on a getter for anything the inputs do not cover.

The configuration

import { Component } from '@angular/core';
import { bootstrapApplication } from '@angular/platform-browser';
import { createGrid } from '@toclocoinc/lattice-grid';
import '@toclocoinc/lattice-grid/css';
import { LatticeGridComponent, provideLattice } from '@toclocoinc/lattice-grid/angular';

const columns = [
  { field: 'symbol', title: 'Symbol', layout: { pin: 'start', width: 150 } },
  { field: 'desk', title: 'Desk', filter: { type: 'set' } },
  // Each column names its own reduction, and the title says which one, so
  // the footer reads as what it is.
  { field: 'price', title: 'Price / median', type: 'number', format: { decimals: 4 }, total: 'median' },
  { field: 'bid', title: 'Bid / p95', type: 'number', format: { decimals: 4 }, total: 'p95' },
  { field: 'change', title: 'Change / stddev', type: 'number', format: { style: 'percent', decimals: 2 }, total: 'stddev' },
  { field: 'volume', title: 'Volume / IQR', type: 'number', format: { notation: 'compact' }, total: 'iqr' },
  { field: 'notional', title: 'Notional / sum', type: 'number',
    format: { style: 'currency', currency: 'USD', decimals: 2 }, total: 'sum' },
];

const rows = [/* trading book records */];



@Component({
  selector: 'app-root',
  standalone: true,
  imports: [LatticeGridComponent],
  template: '<lattice-grid [config]="grid" style="display:block;height:460px"></lattice-grid>',
})
export class AppComponent {
  grid = {
    rowKey: 'id',
    columnDefaults: { filter: true },
    columns: columns,
    rows: rows,
  };
}

bootstrapApplication(AppComponent, {
  providers: [provideLattice({ createGrid })],
});