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: 'North',
              data: [
                {
                  x: 'Q1',
                  y: 503,
                },
                {
                  x: 'Q2',
                  y: 580,
                },
                {
                  x: 'Q3',
                  y: 135,
                },
              ],
            },
            {
              name: 'South',
              data: [
                {
                  x: 'Q1',
                  y: 733,
                },
                {
                  x: 'Q2',
                  y: 385,
                },
                {
                  x: 'Q3',
                  y: 715,
                },
              ],
            },
            {
              name: 'East',
              data: [
                {
                  x: 'Q1',
                  y: 255,
                },
                {
                  x: 'Q2',
                  y: 211,
                },
                {
                  x: 'Q3',
                  y: 441,
                },
              ],
            },
            {
              name: 'West',
              data: [
                {
                  x: 'Q1',
                  y: 428,
                },
                {
                  x: 'Q2',
                  y: 749,
                },
                {
                  x: 'Q3',
                  y: 559,
                },
              ],
            },
          ],
          chart: {
            height: 350,
            width: 600,
            type: 'line',
          },
          plotOptions: {
            line: {
              isSlopeChart: true,
            },
          },
          title: {
            text: 'Regional Sales Rank by Quarter',
          },
          tooltip: {
            followCursor: true,
            intersect: false,
            shared: true,
          },
          dataLabels: {
            background: {
              enabled: true,
            },
            formatter(val, opts) {
              const seriesName = opts.w.config.series[opts.seriesIndex].name
              return val !== null ? seriesName : ''
            },
          },
          yaxis: {
            show: true,
            labels: {
              show: true,
            },
          },
          xaxis: {
            position: 'bottom',
          },
          legend: {
            show: true,
            position: 'top',
            horizontalAlign: 'left',
          },
          stroke: {
            width: [2, 3, 4, 2],
            dashArray: [0, 0, 5, 2],
            curve: 'smooth',
          },
        };
  ngAfterViewInit() {
    (window as any).ApexCharts.setLicense('APEX-eyJpc3N1ZURhdGUiOiIyMDI2LTA0LTE2IiwiZXhwaXJ5RGF0ZSI6IjIwNTItMDQtMTciLCJwbGFuIjoiZW50ZXJwcmlzZSIsImRvbWFpbnMiOlsiYXBleGNoYXJ0cy5jb20iLCIxMjcuMC4wLjEiXX0=');
  }

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