我正在发现Highcharts / Highmaps,现在,我想使用 Angular 6 在我的机器上重现一些演示示例,但是我无法使其正常工作。
官方JS示例在这里:https://www.highcharts.com/maps/demo/map-drilldown (您可以通过单击“在CodePen中编辑”来查看代码)
我试图修改这样的示例:
import { Component, OnInit } from '@angular/core';
import { Highcharts, MapChart } from 'angular-highcharts';
require('highcharts/modules/map')(Highcharts);
@Component({
selector: 'app-demo-map-drilldown',
templateUrl: './demo-map-drilldown.component.html',
styleUrls: ['./demo-map-drilldown.component.css']
})
export class DemoMapDrilldownComponent implements OnInit {
private chart: MapChart;
constructor(private httpClient: HttpClient) { }
ngOnInit() {
let data = Highcharts.geojson(Highcharts.maps['countries/us/us-all']);
let separators = Highcharts.geojson(Highcharts.maps['countries/us/us-all'], 'mapline');
// Set drilldown pointers
data.forEach((element, i) => {
element.drilldown = element.properties['hc-key'];
element.value = i; // Non-random bogus data
});
// Instantiate the map
Highcharts.mapChart('container', {
chart: {
events: {
drilldown: function (e) {
if (!e.seriesOptions) {
let chart = this;
let mapKey = 'countries/us/' + e.point.drilldown + '-all';
// Handle error, the timeout is cleared on success
let fail = setTimeout(function () {
if (!Highcharts.maps[mapKey]) {
chart.showLoading('<i class="icon-frown"></i> Failed loading ' + e.point.name);
fail = setTimeout(function () {
chart.hideLoading();
}, 1000);
}
}, 3000);
// Show the spinner
chart.showLoading('<i class="icon-spinner icon-spin icon-3x"></i>'); // Font Awesome spinner
//data = Highcharts.geojson(Highcharts.maps[mapKey]);
data = Highcharts.maps[mapKey];
// Set a non-random bogus value
data.forEach((element, i) => {
element.value = i; // Non-random bogus data
});
// Hide loading and add series
chart.hideLoading();
clearTimeout(fail);
chart.addSeriesAsDrilldown(e.point, {
name: e.point.name,
data: data,
dataLabels: {
enabled: true,
format: '{point.name}'
}
});
}
this.setTitle(null, { text: e.point.name });
},
drillup: function () {
this.setTitle(null, { text: '' });
}
}
},
title: {
text: 'Highcharts Map Drilldown'
},
subtitle: {
text: '',
floating: true,
align: 'right',
y: 50,
style: {
fontSize: '16px'
}
},
legend: {
layout: 'vertical',
align: 'right',
verticalAlign: 'middle'
},
colorAxis: {
min: 0,
minColor: '#E6E7E8',
maxColor: '#005645'
},
mapNavigation: {
enabled: true,
buttonOptions: {
verticalAlign: 'bottom'
}
},
plotOptions: {
map: {
states: {
hover: {
color: '#EEDD66'
}
}
}
},
series: [{
data: data,
name: 'USA',
dataLabels: {
enabled: true,
format: '{point.properties.postal-code}'
}
}, {
type: 'mapline',
data: separators,
color: 'silver',
enableMouseTracking: false,
animation: {
duration: 500
}
}],
drilldown: {
activeDataLabelStyle: {
color: '#FFFFFF',
textDecoration: 'none',
textOutline: '1px #000000'
},
drillUpButton: {
relativeTo: 'spacingBox',
position: {
x: 0,
y: 60
}
}
}
});
}
}
但是到目前为止还没有运气。在这里,我得到错误geojson is undefined
,而我的编辑器(Visual Studio代码)强调了我对Highcharts(.geojson
,.maps
,.mapChart
)的所有调用。
我的app.module.ts
文件如下:
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { ChartModule, HIGHCHARTS_MODULES } from 'angular-highcharts';
import * as more from 'highcharts/highcharts-more.src';
import * as exporting from 'highcharts/modules/exporting.src';
import * as highstock from 'highcharts/modules/stock.src';
import * as highmaps from 'highcharts/modules/map.src';
import * as drilldown from 'highcharts/modules/drilldown.src';
import * as data from 'highcharts/modules/data.src';
import * as exportdata from 'highcharts/modules/export-data.src';
import * as offline from 'highcharts/modules/offline-exporting.src';
import { AppComponent } from './app.component';
import { DemoMapDrilldownComponent } from './demo-map-drilldown/demo-map-drilldown.component';
@NgModule({
declarations: [
AppComponent,
DemoMapDrilldownComponent,
],
imports: [
BrowserModule,
ChartModule,
],
providers: [
{
provide: HIGHCHARTS_MODULES,
useFactory: () => [more, exporting, highstock, highmaps, drilldown, data, exportdata, offline]
}, // add as factory to your providers
],
bootstrap: [AppComponent]
})
export class AppModule { }
如您所见,我已经尝试从Highcharts内部导入各种模块(基于一些教程),但是没有任何改进...
我对Highcharts完全迷失了。显然,在我的设置和/或使用此框架时出了点问题,但是文档根本没有帮助,我找不到任何完整,详细的Angular教程。
至少有人可以帮助我在Angular应用中运行此官方示例吗?
更新:感谢@daniel_s,我现在使用的是官方包装器highcharts-angular,摆脱了编辑器错误。
我在新项目的控制台中先运行npm install highcharts-angular --save
,然后运行npm install highcharts --save
。
您可以在此处查看该项目:https://codesandbox.io/s/38o5n9qor1 (我在沙箱中添加了highcharts-angle,highcharts和highcharts-map作为依赖项) 在控制台中,出现错误:
ERROR TypeError: "a is undefined"
geojson https://38o5n9qor1.codesandbox.io/node_modules/highcharts/highmaps.js:435:407
ngAfterViewInit https://38o5n9qor1.codesandbox.io/src/app/official-example/official-example.component.ts:18:20
您可以检查并帮助我更正我的代码吗?
答案 0 :(得分:2)
这是行不通的,因为您根本没有在项目中导入任何地图。不幸的是,没有包含所有地图的npm
软件包,但是您可以手动创建带有所需地图的文件,并将文件直接导入到项目中。以下是如何将地图添加到项目中的示例:https://codesandbox.io/s/vm58jk5005
最诚挚的问候!
答案 1 :(得分:1)
我知道这可能不是确切的答案,但是如果有人希望从Highcharts official documentation绘制美国地图示例,您可能会遇到诸如地图不正确的问题呈现或大量控制台错误。
在这里,我想简要地写一些步骤来使该示例正常工作,以防万一您遇到相同的情况。
步骤:
1)从US-ALL下载US-CAPITALS和here。(如果需要,可以使用CDN)。
2)完成后,将JSON文件放入项目数据文件夹(或您喜欢的其他任何位置)。
3)在渲染地图之前,请尝试确保您可以使用httpClient
获取JSON数据:
this._httpClient.get('data/us-all.json').first().subscribe((map: any) => {
this._httpClient.get('data/us-capitals.json').first().subscribe((json: any) => {
...
4)现在使用以下代码渲染地图:
HTML
<div [chart]="mapChart"
style="min-width: 60vw; max-width: 100vw; height: 70vh; margin: 0 auto"></div>
Typescript / JS
...
public ngOnInit(): void {
MapModule(Highcharts)
this._httpClient.get('data/us-all.json').first().subscribe((map: any) => {
this._httpClient.get('data/us-capitals.json').first().subscribe((json: any) => {
const data: any[] = []
forEach(USCapitals.default, (elm) => {
elm.z = elm.population
data.push(elm)
})
this.mapChart = new MapChart({
title: {
text: 'Highmaps lat/lon demo'
},
tooltip: {
pointFormat: '{point.capital}, {point.parentState}<br>' +
'Lat: {point.lat}<br>' +
'Lon: {point.lon}<br>' +
'Population: {point.population}'
},
xAxis: {
crosshair: {
zIndex: 5,
dashStyle: 'dot',
snap: false,
color: 'gray'
}
},
yAxis: {
crosshair: {
zIndex: 5,
dashStyle: 'dot',
snap: false,
color: 'gray'
}
},
mapNavigation: {
enabled: true,
buttonOptions: {
alignTo: 'spacingBox'
}
},
legend: {
enabled: true
},
colorAxis: {
min: 0
},
series: [
{
name: 'Basemap',
mapData: USMap.default,
borderColor: '#606060',
nullColor: 'rgba(200, 200, 200, 0.2)',
showInLegend: false
} as Highcharts.SeriesMapOptions,
{
type: 'mapbubble',
dataLabels: {
enabled: true,
format: '{point.capital}'
},
name: 'Enrolment by States',
data: data,
maxSize: '12%',
color: Highcharts.getOptions().colors[ 0 ],
point: {
events: {
click: event => {
alert('you have clicked on map bubble.')
}
}
}
},
{
name: 'Separators',
type: 'mapline',
data: Highcharts.geojson(USMap.default, 'mapline'),
color: '#101010',
enableMouseTracking: false,
showInLegend: false
}
]
})
})
})
}
上面的内容足以查看带有状态的基本美国地图。
您也可以使用直接JSON导入,就像写成here一样。