demo D253

Series decomposition in Angular

Read a series as its trend, its seasonal rhythm and the residual, stacked to compare

type: 'decomposition', trend, seasonal, residual

This reads a series as its trend, its seasonal rhythm and the residual, stacked to compare. It pulls apart what is a long-term direction, what is a repeating pattern, and what is noise, so each can be judged on its own.

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

@Component({
  selector: 'app-root',
  standalone: true,
  imports: [LatticeGridComponent],
  template:
    '<div id="chart" style="height:400px"></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: 'month', title: 'Month' },
      { field: 'observed', title: 'Observed', type: 'number' },
      { field: 'trend', title: 'Trend', type: 'number' },
      { field: 'seasonal', title: 'Seasonal', type: 'number' },
      { field: 'residual', title: 'Residual', type: 'number' },
    ],
    rows: [/* a series split into its parts: month, observed, trend, seasonal, residual */],
  };

  ngAfterViewInit() {
    createChart({ grid: this.gridRef.grid, container: '#chart', type: 'decomposition', observed: 'observed', trend: 'trend', seasonal: 'seasonal', residual: 'residual', title: 'A series and its parts' });
  }
}

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