demo D173

Brushing a time range in Angular

Drag a range on the chart and the grid narrows to it

brush: true

This lets you drag a range across a time chart and narrows the grid to it. It gives a reader a quick way to focus on a period, selecting the window on the chart and reading the matching rows in the grid.

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

const columns = [
  { field: 'date', title: 'Date', type: 'dateString', layout: { pin: 'start', width: 150 } },
  { field: 'price', title: 'Price', type: 'number', format: { decimals: 2 } },
  { field: 'volume', title: 'Volume', type: 'number', format: { notation: 'compact' } },
];

const rows = [/* one row a day: date, price, volume */];



@Component({
  selector: 'app-root',
  standalone: true,
  imports: [LatticeGridComponent],
  template:
    '<div id="chart" style="height:300px"></div>' +
    '<lattice-grid [config]="grid" (grid-ready)="onGridReady()" style="display:block;height:320px;margin-top:14px"></lattice-grid>',
})
export class AppComponent {
  @ViewChild(LatticeGridComponent) gridRef!: LatticeGridComponent;

  grid = {
    rowKey: 'id',
    columns: columns,
    rows: rows,
  };

  // The grid is created once the view has rendered, so the live instance
  // arrives on grid-ready rather than in ngAfterViewInit.
  onGridReady() {
    const grid = this.gridRef.grid;
    // brush: true lets you drag a range across the chart, and the grid narrows
    // to those days. The chart reads the live grid through the ref, so both
    // views move on one gesture.
    createChart({ grid, container: '#chart', type: 'line', x: 'date', y: 'price', brush: true,
      title: 'Price over time (brush to filter)' });
  }
}

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