Angular 2 and AmCharts

问题:

Does anybody have any idea on how to implement Amcharts into Angular2 (BETA)?

I was trying to follow the path/pattern of this question however, I was pretty successful with charts.js, but unfortunately, I can't use charts.js,for my charting program. Since it seems like everything in Angular2 Beta is uncharted territory, I don't have a clue where to start? I mimicked the charts.js example above with no luck, no error.

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

There is a DefinitelyTyped library for amcharts (not one for plot.ly yet).

UPDATE: Here is the directive:

/// <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();
          }
}
}

Then here is the template.html, from the app.component.ts

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

The javascript / amcharts code above works in on my php site. W

When I run the code I don't get any errors.

I suspect it's one of two things?

Something is wrong with my Selector or the html get rendered but the JavaScript doesn't "write the chart".

chart.write("chartdiv");

Finally, it's not throwing any errors in the console, which is really weird because this Angular2 Beta throws errors all the time.

回答1:

1. Installation

npm install amcharts/amcharts3-angular2 --save

2. In your HTML file, load the amCharts library using tags:

<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. In your app module, import the AmChartsModule module and add it to the imports:

import { AmChartsModule } from "amcharts3-angular2";

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

4. Inject the AmChartsService into your app component, create a element with an id, then use the makeChart method to create the chart:

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);
  }
}

The first argument to makeChart must be the same as the 's id. The id can be whatever you want, but if you display multiple charts each chart must have a different id

When you are finished with the chart, you must call the destroyChart method. It's good to put this inside the ngOnDestroy method.

5. If you want to change the chart after the chart has been created, you must make the changes using the updateChart method:

// 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
  });
});

Sample Project: https://github.com/amcharts/amcharts3-angular2

回答2:

Thanks to the help of customer support at AmCharts.

A working plunker can be found here.

The key issue was this line of code: Instead of doing this:

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

Instead do this:

if (AmCharts.isReady) {
    createStockChart();

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

UPDATE:

Here is the extended answer using Angular Service to get the data for the chart. Angular2 HTTP Providers, get a string from JSON for Amcharts

回答3:

I'd say your selector is wrong, you use the element tag <chart></chart>, but in the directive declaration you use [chart], which selects an attribute. This will leave you with 2 possible options:

Option 1

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

Option 2

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

回答4:

Two things I did. (problem not solved yet.)

1. This was the final code that I used in template.html

   <div id="chartdiv" chart2 style="width:100%; height:600px;"></div>

2. The selector stayed the same. selector: '[chart2]'

3. I also ran npm start to compile the TypeScript. Which I think might have helped.

Hopefully this will help someone.