This demo uses imperative chart updates. The generated code is a faithful Angular translation: open it in CodeSandbox to run and tweak.

import { Component, AfterViewInit, OnDestroy, ViewChild } from '@angular/core';
import {
  ChartComponent,
  ApexAxisChartSeries,
  ApexNonAxisChartSeries,
  ApexChart,
  ApexXAxis,
  ApexYAxis,
  ApexTitleSubtitle,
  ApexDataLabels,
  ApexStroke,
  ApexFill,
  ApexLegend,
  ApexTooltip,
  ApexMarkers,
  ApexPlotOptions,
  ApexResponsive,
  ApexGrid,
  ApexAnnotations,
  ApexStates,
  ApexTheme,
  NgApexchartsModule,
} from 'ng-apexcharts';

export type ChartOptions = {
  series?: ApexAxisChartSeries | ApexNonAxisChartSeries;
  chart?: ApexChart;
  xaxis?: ApexXAxis;
  yaxis?: ApexYAxis | ApexYAxis[];
  title?: ApexTitleSubtitle;
  subtitle?: ApexTitleSubtitle;
  dataLabels?: ApexDataLabels;
  stroke?: ApexStroke;
  fill?: ApexFill;
  legend?: ApexLegend;
  tooltip?: ApexTooltip;
  markers?: ApexMarkers;
  plotOptions?: ApexPlotOptions;
  responsive?: ApexResponsive[];
  grid?: ApexGrid;
  annotations?: ApexAnnotations;
  states?: ApexStates;
  theme?: ApexTheme;
  colors?: string[];
  labels?: any;
};

@Component({
  selector: 'app-chart',
  standalone: true,
  imports: [NgApexchartsModule],
  templateUrl: './chart.component.html',
})
export class AppChart implements AfterViewInit, OnDestroy {
  @ViewChild('chart') chart!: ChartComponent;
  public chartOptions: Partial<ChartOptions> = {
          series: [
            {
              name: 'Desktops',
              data: [
                {
                  x: 'Apple',
                  y: 50,
                },
                {
                  x: 'Acer',
                  y: 30,
                },
                {
                  x: 'Asus',
                  y: 21,
                },
              ],
            },
            {
              name: 'Laptops',
              data: [
                {
                  x: 'Dell',
                  y: 21,
                },
                {
                  x: 'HP',
                  y: 16,
                },
                {
                  x: 'Lenovo',
                  y: 20,
                },
              ],
            },
            {
              name: 'Tablets',
              data: [
                {
                  x: 'Samsung',
                  y: 4,
                },
                {
                  x: 'Huawei',
                  y: 7,
                },
                {
                  x: 'Microsoft',
                  y: 11,
                },
                {
                  x: 'Amazon',
                  y: 31,
                },
                {
                  x: 'Lenovo',
                  y: 13,
                },
              ],
            },
            {
              name: 'Mobile',
              data: [
                {
                  x: 'Apple',
                  y: 10,
                },
                {
                  x: 'Samsung',
                  y: 20,
                },
                {
                  x: 'Huawei',
                  y: 51,
                },
                {
                  x: 'Xiaomi',
                  y: 30,
                },
              ],
            },
          ],
          legend: {
            show: true,
            offsetY: 10,
            height: 30,
          },
          chart: {
            height: 350,
            type: 'treemap',
          },
          title: {
            text: 'Multi-dimensional Treemap',
            align: 'center',
          },
          plotOptions: {
            treemap: {},
          },
        };
  ngAfterViewInit() {
    (window as any).ApexCharts.setLicense('APEX-eyJpc3N1ZURhdGUiOiIyMDI2LTA0LTE2IiwiZXhwaXJ5RGF0ZSI6IjIwNTItMDQtMTciLCJwbGFuIjoiZW50ZXJwcmlzZSIsImRvbWFpbnMiOlsiYXBleGNoYXJ0cy5jb20iLCIxMjcuMC4wLjEiXX0=');
  }

  ngOnDestroy() {
    // no cleanup needed
  }
}
Multi-Dimensional - Angular Treemap Charts | ApexCharts.js | ApexCharts.js