demo D252

Calendar heatmap in Angular

A year of daily figures as one square per day, so busy runs and quiet spells stand out

type: 'calendar', x, y

This draws a year of daily figures as one square per day, shaded by value. It makes busy runs and quiet spells across a year stand out at a glance, the way a contribution calendar does.

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, AfterViewInit } 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 '@toclocoinc/lattice-grid/modules/chart-calendar';  // opt in to the calendar type
import { LatticeGridComponent, provideLattice } from '@toclocoinc/lattice-grid/angular';

@Component({
  selector: 'app-root',
  standalone: true,
  imports: [LatticeGridComponent],
  template:
    '<div id="chart" style="height:240px"></div>' +
    '<lattice-grid [config]="grid" style="display:block;height:320px;margin-top:14px"></lattice-grid>',
})
export class AppComponent implements AfterViewInit {
  @ViewChild(LatticeGridComponent) gridRef!: LatticeGridComponent;

  grid = {
    rowKey: 'id',
    columns: [
      { field: 'date', title: 'Date', type: 'dateString' },
      { field: 'orders', title: 'Orders', type: 'number', total: 'sum' },
    ],
    rows: [/* one row a day for a year: date, orders */],
  };

  ngAfterViewInit() {
    createChart({ grid: this.gridRef.grid, container: '#chart', type: 'calendar', x: 'date', y: 'orders', title: 'Orders through the year' });
  }
}

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