向下钻取 (Highcharts) 无法处理 Angular 中的动态数据

Question

我在我的 angular 项目中使用高图 API，我的问题是当我获得动态数据时我成功生成了高图但是当我点击任何状态时我的钻取功能没有被击中或不工作。在我的场景中需要使用 highchart 和 drilldown 所以经过大约 5 个小时的搜索和开发，我还没有从 google 或 highcharts 自己的论坛中得到任何解决方案。

这是我的代码：

generateMap() {
this.Highcharts = Highcharts;

const usMapData = require("@highcharts/map-collection/countries/us/us-all.geo.json");
const usMap = Highcharts.geojson(usMapData);

this.chartOptions = {
  chart: {
    height: (8 / 16) * 100 + "%",
  },
  events: {
    drilldown: function (e) {
      this.methodMap(e.point.splitName);
      const chart = this as any;
      const mapKey = "countries/us/" + e.point.drilldown + "-all";
      const mapData = require(`@highcharts/map-collection/${mapKey}.geo.json`);
      const provinceData = Highcharts.geojson(mapData);

      chart.addSeriesAsDrilldown(e.point, {
        name: e.point.name,
        data: provinceData,

        dataLabels: {
          enabled: true,
          format: '{point.name}'
        }
      });

      chart.setTitle(null, { text: e.point.name });
    },
    drillup() {
      const chart = this as any;
    }
  },
  title: {
    text: ""
  },
  colorAxis: {
    min: 0,
    minColor: "#E6E7E8",
    maxColor: "#417BCC"
  },

  mapNavigation: {
    enabled: true,
    buttonOptions: {
      verticalAlign: "bottom"
    }
  },
  plotOptions: {
    map: {
      states: {
        hover: {
          color: "#F8BA03"
        }
      }
    },
    series: {
      point: {
        events: {
          click: function (e) {
          }
        }
      }
    }
  },
  series: [
    {
      animation: {
        duration: 1000
      },
      name: "United States",
      data: null,
      dataLabels: {
        enabled: true,
        color: '#FFFFFF',
        format: `{point.splitName}`,
        style: {
          textTransform: 'uppercase',
        }
      },
    }
  ],
  drilldown: {}
};

this.CurrentVendorService.getAllVendorStates().pipe(
  tap(result => {
    this.chart.showLoading();
    
    usMap.forEach((el: any, i) => {
      el.splitName = el.properties["hc-key"].split('-')[1].toUpperCase();
      el.drilldown = el.properties["hc-key"];
      const getFirstMatchedVendor = result.data.find(vendorObj => vendorObj.State_Code == el.splitName);
      if (getFirstMatchedVendor) {
        el.value = getFirstMatchedVendor.Vendor_Count;
      }
    });
    
    this.chartOptions.series = [
      {
        data: usMap
      }
    ];
    
    this.updateFromInput = true;
    this.chart.hideLoading();
  },
    (error: any) => {
      this.gifLoader = false
      this.errorMessage = error.error.message;
      this.snackBar.open(this.errorMessage, '', {
        duration: 2000,
      });
      console.log(`error on retriving all vendors state list : ${error}`);
    }
  ),
  finalize(() => {})).subscribe();
}

Component.Html

<highcharts-chart
          [Highcharts]="Highcharts"
          [constructorType]="chartConstructor"
          [callbackFunction]="chartCallback"
          [options]="chartOptions"
          style="width: 100%; height: 400px; display: block;"
          [(update)]="updateFromInput"
        ></highcharts-chart>

generateMap() 来电 ngOnInit()。如果我使用静态数据而不是服务。它就像一个魅力，但事实并非如此。我需要对我的动态数据进行向下钻取。请帮我解决我做错的地方。

Answer 1

经过几个小时的努力，找到了我自己的问题答案。我仍在学习和提高对编程问题细节的关注。

解决方案

让我用勺子喂你，所以你只需复制粘贴它就可以了。

一些全局声明：

Highcharts;
chartConstructor = "mapChart";
chartOptions: Highcharts.Options;
updateFromInput = false;
chart;
chartCallback;

将下面的代码片段放入您的组件构造函数中

this.chartCallback = chart => {
    this.chart = chart;
};

将下面的代码放入ngOnInit()

this.generateMap();

现在是主要部分：

generateMap() {
    const self = this;
    self.Highcharts = Highcharts;

    const usMapData = require("@highcharts/map-collection/countries/us/us-all.geo.json");
    const usMap = Highcharts.geojson(usMapData);

    self.chartOptions = {
        chart: {
            height: (8 / 16) * 100 + "%",
            events: {
                drilldown: function (e: any) {
                    setTimeout(() => {
                        self.methodMap(e.point.splitName);
                        const mapKey = "countries/us/" + e.point.drilldown + "-all";
                        const mapData = require(`@highcharts/map-collection/${mapKey}.geo.json`);
                        const provinceData = Highcharts.geojson(mapData);
                        self.chart.hideLoading();
                        self.chart.addSeriesAsDrilldown(e.point, {
                            name: e.point.name,
                            data: provinceData,

                            dataLabels: {
                                enabled: true,
                                format: '{point.name}'
                            }
                        } as Highcharts.SeriesOptionsType);

                        self.chart.setTitle(null, { text: e.point.name });
                    }, 100);
                },
                drillup() {
                    self.resetMethod();
                }
            }
        },
        title: {
            text: ""
        },
        colorAxis: {
            min: 0,
            minColor: "#E6E7E8",
            maxColor: "#417BCC"
        },

        mapNavigation: {
            enabled: true,
            buttonOptions: {
                verticalAlign: "bottom"
            }
        },
        plotOptions: {
            map: {
                states: {
                    hover: {
                        color: "#F8BA03"
                    }
                }
            }
        },
        series: [
            {
                type: "map",
                name: "United States",
                data: null,
                dataLabels: {
                    enabled: true,
                    color: '#FFFFFF',
                    format: `{point.splitName}`,
                    style: {
                        textTransform: 'uppercase',
                    }
                },
            }
        ],
        drilldown: {}
    };

    self.CurrentVendorService.getAllVendorStates().pipe(
        tap(result => {
            self.chart.showLoading();

            usMap.forEach((el: any, i) => {
                el.splitName = el.properties["hc-key"].split('-')[1].toUpperCase();
                el.drilldown = el.properties["hc-key"];
                const getFirstMatchedVendor = result.data.find(vendorObj => vendorObj.State_Code == el.splitName);
                if (getFirstMatchedVendor) {
                    el.value = getFirstMatchedVendor.Vendor_Count;
                }
            });

            self.chartOptions.series = [
                {
                    type: "map",
                    data: usMap
                }
            ];

            self.updateFromInput = true;
            self.chart.hideLoading();
        },
            (error: any) => {
                self.gifLoader = false
                self.errorMessage = error.error.message;
                self.snackBar.open(self.errorMessage, '', {
                    duration: 2000,
                });
                console.log(`error on retriving all vendors state list : ${error}`);
            }
        ),
        finalize(() => { })).subscribe();
}

是的，您将根据需要自定义上述业务逻辑。但这就是我想要的。我在 self.chartOptions 对象中做了一些修改并添加了 setTimeout.

干杯！

向下钻取 (Highcharts) 无法处理 Angular 中的动态数据

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