React 地理的データ モデルのバインディング
Ignite UI for React マップ コンポーネントは、シェイプ ファイルからの地理空間データやデータ モデルからの地理的位置を地理的画像マップに表示するように設計されています。地理的シリーズの ItemsSource
プロパティは、データ モデルへのバインディングのために使用されます。このプロパティは、カスタム オブジェクトの配列にバインドできます。
React 地理的データ モデルのバインディングの例
export default class WorldUtils {
public static calcPaths(origin: any, dest: any): any[] {
let interval = 200;
let paths: any[] = [[]];
let pathID = 0;
let distance = this.calcDistance(origin, dest);
if (distance <= interval) {
paths[pathID].push({ x: origin.lon, y: origin.lat });
paths[pathID].push({ x: dest.lon, y: dest.lat });
} else {
let current = origin;
let previous = origin;
for (let dist = interval; dist <= distance; dist += interval)
{
previous = current
paths[pathID].push({ x: current.lon, y: current.lat });
let bearing = this.calcBearing(current, dest);
current = this.calcDestination(current, bearing, interval);
if (previous.lon > 150 && current.lon < -150) {
paths[pathID].push({ x: 180, y: current.lat });
paths.push([]);
pathID++
current = { lon: -180, lat: current.lat }
} else if (previous.lon < -150 && current.lon > 150) {
paths[pathID].push({ x: -180, y: current.lat });
paths.push([]);
pathID++
current = { lon: 180, lat: current.lat }
}
}
paths[pathID].push({ x: dest.lon, y: dest.lat });
}
return paths;
}
public static calcBearing(origin: any, dest: any): number
{
origin = this.toRadianLocation(origin);
dest = this.toRadianLocation(dest);
let range = (dest.lon - origin.lon);
let y = Math.sin(range) * Math.cos(dest.lat);
let x = Math.cos(origin.lat) * Math.sin(dest.lat) -
Math.sin(origin.lat) * Math.cos(dest.lat) * Math.cos(range);
let angle = Math.atan2(y, x);
return this.toDegreesNormalized(angle);
}
public static calcDestination(origin: any, bearing: number, distance: number): any {
let radius = 6371.0;
origin = this.toRadianLocation(origin);
bearing = this.toRadians(bearing);
distance = distance / radius;
let lat = Math.asin(Math.sin(origin.lat) * Math.cos(distance) +
Math.cos(origin.lat) * Math.sin(distance) * Math.cos(bearing));
let x = Math.sin(bearing) * Math.sin(distance) * Math.cos(origin.lat);
let y = Math.cos(distance) - Math.sin(origin.lat) * Math.sin(origin.lat);
let lon = origin.lon + Math.atan2(x, y);
lon = (lon + 3 * Math.PI) % (2 * Math.PI) - Math.PI;
lon = this.toDegrees(lon);
lat = this.toDegrees(lat);
return { lon: lon, lat: lat };
}
public static calcDistance(origin: any, dest: any): number {
origin = this.toRadianLocation(origin);
dest = this.toRadianLocation(dest);
let sinProd = Math.sin(origin.lat) * Math.sin(dest.lat);
let cosProd = Math.cos(origin.lat) * Math.cos(dest.lat);
let lonDelta = (dest.lon - origin.lon);
let angle = Math.acos(sinProd + cosProd * Math.cos(lonDelta));
let distance = angle * 6371.0;
return distance;
}
public static toRadianLocation(geoPoint: any): any {
let x = this.toRadians(geoPoint.lon);
let y = this.toRadians(geoPoint.lat);
return { lon: x, lat: y };
}
public static toRadians(degrees: number): number
{
return degrees * Math.PI / 180;
}
public static toDegrees(radians: number): number {
return (radians * 180.0 / Math.PI);
}
public static toDegreesNormalized(radians: number): number
{
let degrees = this.toDegrees(radians);
degrees = (degrees + 360) % 360;
return degrees;
}
public static toStringLat(latitude: number): string {
let str = Math.abs(latitude).toFixed(1) + "°";
return latitude > 0 ? str + "N" : str + "S";
}
public static toStringLon(coordinate: number): string {
let val = Math.abs(coordinate);
let str = val < 100 ? val.toFixed(1) : val.toFixed(0);
return coordinate > 0 ? str + "°E" : str + "°W";
}
public static toStringAbbr(value: number): string {
if (value > 1000000000000) {
return (value / 1000000000000).toFixed(1) + " T"
} else if (value > 1000000000) {
return (value / 1000000000).toFixed(1) + " B"
} else if (value > 1000000) {
return (value / 1000000).toFixed(1) + " M"
} else if (value > 1000) {
return (value / 1000).toFixed(1) + " K"
}
return value.toFixed(0);
}
public static getLongitude(location: any): number {
if (location.x) return location.x;
if (location.lon) return location.lon;
if (location.longitude) return location.longitude;
return Number.NaN;
}
public static getLatitude(location: any): number {
if (location.y) return location.y;
if (location.lat) return location.lat;
if (location.latitude) return location.latitude;
return Number.NaN;
}
public static getBounds(locations: any[]): any {
let minLat = 90;
let maxLat = -90;
let minLon = 180;
let maxLon = -180;
for (const location of locations) {
const crrLon = this.getLongitude(location);
if (!Number.isNaN(crrLon)) {
minLon = Math.min(minLon, crrLon);
maxLon = Math.max(maxLon, crrLon);
}
const crrLat = this.getLatitude(location);
if (!Number.isNaN(crrLat)) {
minLat = Math.min(minLat, crrLat);
maxLat = Math.max(maxLat, crrLat);
}
}
const geoBounds = {
left: minLon,
top: minLat,
width: Math.abs(maxLon - minLon),
height: Math.abs(maxLat - minLat)
};
return geoBounds;
}
public static getNightShapes(): any[] {
let nightShape = [];
let line: any[] = [];
for (let lon = -180; lon <= 180; lon += 1) {
let x = lon;
let y = 75 * Math.cos(lon * Math.PI / 180);
line.push({x: x, y: y});
}
let coordinateLine = {points: [line]};
nightShape.push(coordinateLine);
return nightShape;
}
}
ts
import React from 'react';
import ReactDOM from 'react-dom/client';
import './index.css';
import WorldUtils from "./WorldUtils"
import { IgrGeographicMapModule } from "@infragistics/igniteui-react-maps";
import { IgrGeographicMap } from "@infragistics/igniteui-react-maps";
import { IgrGeographicSymbolSeries } from "@infragistics/igniteui-react-maps";
import { IgrGeographicPolylineSeries } from "@infragistics/igniteui-react-maps";
import { IgrDataChartInteractivityModule } from "@infragistics/igniteui-react-charts";
import { MarkerType } from "@infragistics/igniteui-react-charts";
import { IgrDataContext } from "@infragistics/igniteui-react-core";
IgrGeographicMapModule.register();
IgrDataChartInteractivityModule.register();
export default class MapBindingDataModel extends React.Component {
public geoMap: IgrGeographicMap;
public flights: any[];
constructor(props: any) {
super(props);
const cityDAL = { lat: 32.763, lon: -96.663, country: "US", name: "Dallas" };
const citySYD = { lat: -33.889, lon: 151.028, country: "Australia", name: "Sydney" };
const cityNZL = { lat: -36.848, lon: 174.763, country: "New Zealand", name: "Auckland" };
const cityQTR = { lat: 25.285, lon: 51.531, country: "Qatar", name: "Doha" };
const cityPAN = { lat: 8.949, lon: -79.400, country: "Panama", name: "Panama" };
const cityCHL = { lat: -33.475, lon: -70.647, country: "Chile", name: "Santiago" };
const cityJAP = { lat: 35.683, lon: 139.809, country: "Japan", name: "Tokyo" };
const cityALT = { lat: 33.795, lon: -84.349, country: "US", name: "Atlanta" };
const cityJOH = { lat: -26.178, lon: 28.004, country: "South Africa", name: "Johannesburg" };
const cityNYC = { lat: 40.750, lon: -74.0999, country: "US", name: "New York" };
const citySNG = { lat: 1.229, lon: 104.177, country: "Singapore", name: "Singapore" };
const cityMOS = { lat: 55.750, lon: 37.700, country: "Russia", name: "Moscow" };
const cityROM = { lat: 41.880, lon: 12.520, country: "Italy", name: "Roma" };
const cityLAX = { lat: 34.000, lon: -118.25, country: "US", name: "Los Angeles" };
this.flights = [
{ origin: cityDAL, dest: citySNG, color: "Green" },
{ origin: cityMOS, dest: cityNZL, color: "Red" },
{ origin: cityCHL, dest: cityJAP, color: "Blue" },
{ origin: cityPAN, dest: cityROM, color: "Orange" },
{ origin: cityALT, dest: cityJOH, color: "Black" },
{ origin: cityNYC, dest: cityQTR, color: "Purple" },
{ origin: cityLAX, dest: citySYD, color: "Gray" },
];
this.onMapRef = this.onMapRef.bind(this);
this.createSymbolTooltip = this.createSymbolTooltip.bind(this);
}
public render(): JSX.Element {
return (
<div className="container sample">
<div className="container" >
<IgrGeographicMap
ref={this.onMapRef}
width="100%"
height="100%"
zoomable="true"/>
</div>
<div className="overlay-bottom-right overlay-border">Imagery Tiles: @OpenStreetMap</div>
</div>
);
}
public onMapRef(geoMap: IgrGeographicMap) {
if (!geoMap) { return; }
this.geoMap = geoMap;
this.geoMap.updateZoomWindow({ left: 0.2, top: 0.1, width: 0.6, height: 0.6 });
for (const flight of this.flights) {
this.createPolylineSeries(flight);
this.createSymbolSeries(flight);
}
}
public createSymbolSeries(flight: any)
{
const geoLocations = [flight.origin, flight.dest ];
const symbolSeries = new IgrGeographicSymbolSeries ( { name: "symbolSeries" });
symbolSeries.dataSource = geoLocations;
symbolSeries.markerType = MarkerType.Circle;
symbolSeries.latitudeMemberPath = "lat";
symbolSeries.longitudeMemberPath = "lon";
symbolSeries.markerBrush = "White";
symbolSeries.markerOutline = flight.color;
symbolSeries.thickness = 1;
symbolSeries.tooltipTemplate = this.createSymbolTooltip;
this.geoMap.series.add(symbolSeries);
}
public createPolylineSeries(flight: any)
{
const geoPath = WorldUtils.calcPaths(flight.origin, flight.dest);
const geoDistance = WorldUtils.calcDistance(flight.origin, flight.dest);
const geoRoutes = [
{ points: geoPath ,
origin: flight.origin,
dest: flight.dest,
distance: geoDistance,
time: geoDistance / 850,
}];
const lineSeries = new IgrGeographicPolylineSeries ( { name: "lineSeries" });
lineSeries.dataSource = geoRoutes;
lineSeries.shapeMemberPath = "points";
lineSeries.shapeStrokeThickness = 9;
lineSeries.shapeOpacity = 0.5;
lineSeries.shapeStroke = flight.color;
lineSeries.tooltipTemplate = this.createPolylineTooltip;
this.geoMap.series.add(lineSeries);
}
public createSymbolTooltip(context: any) {
const dataContext = context.dataContext as IgrDataContext;
if (!dataContext) return null;
const dataItem = dataContext.item as any;
if (!dataItem) return null;
const lat = WorldUtils.toStringLat(dataItem.lat);
const lon = WorldUtils.toStringLon(dataItem.lon);
const brush = dataContext.series.markerOutline;
const style = { color: brush } as React.CSSProperties;
return <div >
<div className="tooltipTitle" style={style}> {dataItem.name}</div>
<div className="tooltipBox">
<div className="tooltipRow">
<div className="tooltipLbl">Country:</div>
<div className="tooltipVal">{dataItem.country}</div>
</div>
<div className="tooltipRow">
<div className="tooltipLbl">Latitude:</div>
<div className="tooltipVal">{lat}</div>
</div>
<div className="tooltipRow">
<div className="tooltipLbl">Longitude:</div>
<div className="tooltipVal">{lon}</div>
</div>
</div>
</div>
}
public createPolylineTooltip(context: any) {
const dataContext = context.dataContext as IgrDataContext;
if (!dataContext) return null;
const dataItem = dataContext.item as any;
if (!dataItem) return null;
return <div>
<div className="tooltipTitle" >{dataItem.origin.name} - {dataItem.dest.name}</div>
<div className="tooltipBox">
<div className="tooltipRow">
<div className="tooltipLbl">Distance:</div>
<div className="tooltipVal">{dataItem.distance.toFixed(0)} km</div>
</div>
<div className="tooltipRow">
<div className="tooltipLbl">Duration:</div>
<div className="tooltipVal">{dataItem.time.toFixed(1)} h</div>
</div>
</div>
</div>
}
}
const root = ReactDOM.createRoot(document.getElementById('root'));
root.render(<MapBindingDataModel/>);
tsx
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以下の表で、地理的シリーズのタイプごとに必要となるデータ構造を簡単に説明します。
コード スニペット
以下のコードは、IgrGeographicSymbolSeries
を、経度と緯度の座標を使用して格納された世界の一部の都市の地理的位置を含むカスタム データ モデルにバインドする方法を示します。また、WorldUtility を使用してこれらの場所間の最短の地理的経路をプロットするために IgrGeographicPolylineSeries
を使用します。
import { IgrGeographicSymbolSeries } from 'igniteui-react-maps';
import { IgrGeographicPolylineSeries } from 'igniteui-react-maps';
import WorldUtils from "./WorldUtils" ;
constructor(props: any) {
super(props);
const cityDAL = { lat: 32.763, lon: -96.663, country: "US", name: "Dallas" };
const cityNZL = { lat: -36.848, lon: 174.763, country: "New Zealand", name:"Auckland" };
const cityCHL = { lat: -33.475, lon: -70.647, country: "Chile", name:"Santiago" };
const cityJAP = { lat: 35.683, lon: 139.809, country: "Japan", name: "Tokyo" }
const citySNG = { lat: 1.229, lon: 104.177, country: "Singapore", name:"Singapore" };
const cityMOS = { lat: 55.750, lon: 37.700, country: "Russia", name: "Moscow"};
this.flights = [
{ origin: cityDAL, dest: citySNG, color: "Green" },
{ origin: cityMOS, dest: cityNZL, color: "Red" },
{ origin: cityCHL, dest: cityJAP, color: "Blue" },
];
for (const flight of this.flights) {
this.createPolylineSeries(flight);
this.createSymbolSeries(flight);
}
}
public createSymbolSeries(flight: any)
{
const geoLocations = [flight.origin, flight.dest ];
const symbolSeries = new IgrGeographicSymbolSeries ( { name: "symbolSeries" });
symbolSeries.dataSource = geoLocations;
symbolSeries.markerType = MarkerType.Circle;
symbolSeries.latitudeMemberPath = "lat";
symbolSeries.longitudeMemberPath = "lon";
symbolSeries.markerBrush = "White";
symbolSeries.markerOutline = flight.color;
symbolSeries.thickness = 1;
this.geoMap.series.add(symbolSeries);
}
public createPolylineSeries(flight: any)
{
const geoPath = WorldUtils.calcPaths(flight.origin, flight.dest);
const geoDistance = WorldUtils.calcDistance(flight.origin, flight.dest);
const geoRoutes = [ { points: geoPath } ];
const lineSeries = new IgrGeographicPolylineSeries ( { name: "lineSeries" });
lineSeries.dataSource = geoRoutes;
lineSeries.shapeMemberPath = "points";
lineSeries.shapeStrokeThickness = 9;
lineSeries.shapeOpacity = 0.5;
lineSeries.shapeStroke = flight.color;
this.geoMap.series.add(lineSeries);
}
ts

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