角2与AmCharts

Question

有没有人知道如何在Angular2 (测试版)中实现Amcharts？

我试图遵循这个问题的路径/模式，但是，我在charts.js上取得了相当成功，但不幸的是，我不能在我的绘图程序中使用charts.js。由于Angular2 Beta的一切似乎都是未知的领域，我不知道从哪里开始？我模仿了上面的charts.js示例，没有运气，没有错误。

/// <reference path="../DefinitelyTyped/amcharts/AmCharts.d.ts" />

这里有一个DefinitelyTyped库，用于内存图(还没有一个用于plot.ly )。

更新:这是指令：

/// <reference path="../DefinitelyTyped/amcharts/AmCharts.d.ts" />



import {Directive, ElementRef, Renderer, Input} from 'angular2/core';

@Directive({
selector: '[chart]',
})

export class amChartDirective  {
          var chartData = [{date: new Date(2015,2,31,0, 0,      0,      0),value:372.10,volume:2506100},{date: new Date(2015,3,1,0, 0, 0, 0),value:370.26,volume:2458100},{date: new Date(2015,3,2,0, 0, 0, 0),value:372.25,volume:1875300},{date: new Date(2015,3,6,0, 0, 0, 0),value:377.04,volume:3050700}];
          var chart;
          AmCharts.ready(function () {
              createStockChart();
          });
          function createStockChart() {
              chart = new AmCharts.AmStockChart();
              chart.dataDateFormat = "M-D-YY";
              chart.pathToImages = "http://www.strategic-options.com/trade/3_party/amcharts/images/";
              var dataSet = new AmCharts.DataSet();
              dataSet.dataProvider = chartData;
              dataSet.fieldMappings = [{
                      fromField: "value",
                      toField: "value"
                  }, {
                      fromField: "volume",
                      toField: "volume"
                  }];
              dataSet.categoryField = "date";
              chart.dataSets = [dataSet];
              // PANELS ///////////////////////////////////////////
              // first stock panel
              var stockPanel1 = new AmCharts.StockPanel();
              stockPanel1.showCategoryAxis = false;
              stockPanel1.title = "Value";
              stockPanel1.percentHeight = 70;
              // graph of first stock panel
              var graph1 = new AmCharts.StockGraph();
              graph1.valueField = "value";
              stockPanel1.addStockGraph(graph1);
              // create stock legend
              var stockLegend1 = new AmCharts.StockLegend();
              stockLegend1.valueTextRegular = " ";
              stockLegend1.markerType = "none";
              stockPanel1.stockLegend = stockLegend1;
              // second stock panel
              var stockPanel2 = new AmCharts.StockPanel();
              stockPanel2.title = "Volume";
              stockPanel2.percentHeight = 30;
              var graph2 = new AmCharts.StockGraph();
              graph2.valueField = "volume";
              graph2.type = "column";
              graph2.fillAlphas = 1;
              stockPanel2.addStockGraph(graph2);
              // create stock legend
              var stockLegend2 = new AmCharts.StockLegend();
              stockLegend2.valueTextRegular = " ";
              stockLegend2.markerType = "none";
              stockPanel2.stockLegend = stockLegend2;
              // set panels to the chart
              chart.panels = [stockPanel1, stockPanel2];

              // PERIOD SELECTOR ///////////////////////////////////
              var periodSelector = new AmCharts.PeriodSelector();
              periodSelector.periods = [{

                      period: "DD",
                      count: 10,
                      label: "10 days"
                  }, {
                      period: "MM",
                      count: 1,
                      label: "1 month"
                  }, {
                      period: "YYYY",
                      count: 1,
                      label: "1 year"
                  }, {

                      period: "YTD",
                      label: "YTD"
                  }, {
                      selected: true,
                      period: "MAX",
                      label: "MAX"
                  }];
              periodSelector.selectFromStart = true;
              chart.periodSelector = periodSelector;


              var panelsSettings = new AmCharts.PanelsSettings();
              panelsSettings.usePrefixes = true;
              chart.panelsSettings = panelsSettings;

              //Cursor Settings
              var cursorSettings = new AmCharts.ChartCursorSettings();
              cursorSettings.valueBalloonsEnabled = true;
              cursorSettings.graphBulletSize = 1;
              chart.chartCursorSettings = cursorSettings;

              // EVENTS

              var e0 = {date: new Date(2016,0,7), type: "arrowDown", backgroundColor: "#FF0707", graph: graph1, text: "Sell Short", description: "Sell Short equity here"};
              dataSet.stockEvents = [e0];
              chart.write("chartdiv");
          }
          function hideStockEvents() {
              window.console.log('woop');
              chart.hideStockEvents();
          }
          function showStockEvents() {
              window.console.log('woop');
              chart.showStockEvents();
          }
}
}

下面是template.html，来自app.component.ts

<chart>helllo from AmCharts part 2<divid="chartdiv"  style="width:100%; height:600px;"></div></chart>

上面的javascript / above代码可以在my站点上工作。W

当我运行代码时，我不会发现任何错误。

我怀疑这是两件事之一？

我的Selector或html呈现有问题，但是JavaScript没有“写图表”。

chart.write("chartdiv");

最后，它没有在控制台中抛出任何错误，这真的很奇怪，因为这个Angular2 Beta总是抛出错误。

Answer 1

感谢AmCharts的客户支持。

工作柱塞可以找到这里。

关键问题是这一行代码:而不是这样做：

AmCharts.ready(function () {
    createStockChart();
});

相反，请这样做：

if (AmCharts.isReady) {
    createStockChart();

} else {
    AmCharts.ready(function () {
        createStockChart();
    });
}

更新：

以下是使用角服务获取图表数据的扩展答案。，为Angular2获取一个字符串

Answer 2

1.安装

npm install amcharts/amcharts3-angular2 --save

在文件中，使用标记加载amCharts库：

<script src="https://www.amcharts.com/lib/3/amcharts.js"></script>
<script src="https://www.amcharts.com/lib/3/serial.js"></script>
<script src="https://www.amcharts.com/lib/3/themes/light.js"></script>

3.在应用程序模块中，导入AmChartsModule模块并将其添加到导入：

import { AmChartsModule } from "amcharts3-angular2";

@NgModule({
  imports: [
    AmChartsModule
  ]
})
export class AppModule {}

4.将AmChartsService注入应用程序组件，创建一个带有id的元素，然后使用makeChart方法创建图表：

import { AmChartsService } from "amcharts3-angular2";

@Component({
  template: `<div id="chartdiv" [style.width.%]="100" [style.height.px]="500"></div>`
})
export class AppComponent {
  private chart: any;

  constructor(private AmCharts: AmChartsService) {}

  ngOnInit() {
    this.chart = this.AmCharts.makeChart("chartdiv", {
      "type": "serial",
      "theme": "light",
      "dataProvider": []
      ...
    });
  }

  ngOnDestroy() {
    this.AmCharts.destroyChart(this.chart);
  }
}

makeChart的第一个参数必须与id相同。id可以是任意的，但是如果显示多个图表，每个图表必须有不同的id。

完成图表后，必须调用destroyChart方法。把它放在ngOnDestroy方法中是很好的。

如果要在创建图表之后更改图表，则必须使用方法：进行更改。

// This must be called when making any changes to the chart
this.AmCharts.updateChart(this.chart, () => {
  // Change whatever properties you want, add event listeners, etc.
  this.chart.dataProvider = [];

  this.chart.addListener("init", () => {
    // Do stuff after the chart is initialized
  });
});

样本项目：https://github.com/amcharts/amcharts3-angular2

Answer 3

我会说您的选择器是错误的，您使用元素标记<chart></chart>，但是在指令声明中使用[chart]，它选择一个属性。这将给你留下两个可能的选择：

选项1

@Directive({
   selector: 'chart', //remove the straight brackets to select a tag
   ...
})

选项2

<div chart>...</div> <!-- now you can use the attribute selector -->