AmMaps - Uncaught TypeError: Cannot read property '0' of undefined

[AaronONeill]

Hi,

I have been building a prototype for a drilldown map (continents -> world -> country) and I have added labels at each stage which is working correctly.

I am now trying to update the maps labels (images) via a button click. The button simply updates the state where the label text is coming from. This is working fine if I click the button on the "Continent" view however if I click on "North America" for example, the map switches to World view and if I now click on the Update Labels button, it causes the following error:

amcharts3-react.js:154 Uncaught TypeError: Cannot read property '0' of undefined at update (amcharts3-react.js:154) at updateArray (amcharts3-react.js:121) at update (amcharts3-react.js:148) at updateObject (amcharts3-react.js:210) at update (amcharts3-react.js:154) at updateObject (amcharts3-react.js:210) at update (amcharts3-react.js:154) at updateArray (amcharts3-react.js:121) at update (amcharts3-react.js:148) at updateObject (amcharts3-react.js:210) update @ amcharts3-react.js:154 updateArray @ amcharts3-react.js:121 update @ amcharts3-react.js:148 updateObject @ amcharts3-react.js:210 update @ amcharts3-react.js:154 updateObject @ amcharts3-react.js:210 update @ amcharts3-react.js:154 updateArray @ amcharts3-react.js:121 update @ amcharts3-react.js:148 updateObject @ amcharts3-react.js:210 update @ amcharts3-react.js:154 updateObject @ amcharts3-react.js:210 componentDidUpdate @ amcharts3-react.js:260 measureLifeCyclePerf @ ReactCompositeComponent.js:75 (anonymous) @ ReactCompositeComponent.js:729 notifyAll @ CallbackQueue.js:76 close @ ReactReconcileTransaction.js:80 closeAll @ Transaction.js:206 perform @ Transaction.js:153 perform @ Transaction.js:140 perform @ ReactUpdates.js:89 flushBatchedUpdates @ ReactUpdates.js:172 closeAll @ Transaction.js:206 perform @ Transaction.js:153 batchedUpdates @ ReactDefaultBatchingStrategy.js:62 batchedUpdates @ ReactUpdates.js:97 dispatchEvent @ ReactEventListener.js:147

Below is the React application so far:

import React from 'react';
import ReactDOM from 'react-dom';
import AmCharts from '@amcharts/amcharts3-react';
import 'ammap3/ammap/ammap.js';
import 'ammap3/ammap/maps/js/continentsLow.js';
import 'ammap3/ammap/maps/js/worldHigh.js';

import 'ammap3/ammap/maps/js/usa2High.js';
import 'ammap3/ammap/maps/js/canadaHigh.js';
import 'ammap3/ammap/maps/js/unitedKingdomHigh.js';
import 'ammap3/ammap/maps/js/switzerlandHigh.js';
import 'ammap3/ammap/maps/js/swedenHigh.js';
import 'ammap3/ammap/maps/js/spainHigh.js';
import 'ammap3/ammap/maps/js/singaporeHigh.js';
import 'ammap3/ammap/maps/js/norwayHigh.js';
import 'ammap3/ammap/maps/js/netherlandsHigh.js';
import 'ammap3/ammap/maps/js/newZealandHigh.js';
import 'ammap3/ammap/maps/js/luxembourgHigh.js';
import 'ammap3/ammap/maps/js/japanHigh.js';
import 'ammap3/ammap/maps/js/italyHigh.js';
import 'ammap3/ammap/maps/js/irelandHigh.js';
import 'ammap3/ammap/maps/js/hungaryHigh.js';
import 'ammap3/ammap/maps/js/germanyHigh.js';
import 'ammap3/ammap/maps/js/franceHigh.js';
import 'ammap3/ammap/maps/js/finlandHigh.js';
import 'ammap3/ammap/maps/js/denmarkHigh.js';
import 'ammap3/ammap/maps/js/czechRepublicHigh.js';
import 'ammap3/ammap/maps/js/chinaHigh.js';
import 'ammap3/ammap/maps/js/canadaHigh.js';
import 'ammap3/ammap/maps/js/belgiumHigh.js';
import 'ammap3/ammap/maps/js/austriaHigh.js';
import 'ammap3/ammap/maps/js/australiaHigh.js';
import 'ammap3/ammap/maps/js/southAfricaHigh.js';
import 'ammap3/ammap/maps/js/southKoreaHigh.js';
import 'ammap3/ammap/maps/js/chileHigh.js';

export default class Application extends React.Component {

    constructor(props) {
    super(props);

        this.state = {
            mapstyle: {
                width: '100%',
                height: '500px'
            },
            counts: {
                continents: {
                    europe: 100,
                    north_america: 400
                },
                countries: {
                    US: 350,
                    CA: 50
                }
            },
            defaultProvider: {},
            mapconfig: {
                type: "map",
                theme: "light",
                areasSettings: {
                    autoZoom: true,
                    rollOverOutlineColor: "#9a7bca",
                    selectedColor: "#9a7bca",
                    color: "#a791b4",
                    rollOverColor: "#9a7bca"
                },
                dataProvider: {
                    "map": "continentsLow",
                },
                listeners: [
                    {
                        event: "clickMapObject",
                        method: this.onMapClick
                    },
                    {
                        event: "dataUpdated",
                        method: this.onDataUpdated
                    }
                ]
            },
            maps: [
                {country:'US', map:'usa2High'},
                {country:'GB', map:'unitedKingdomHigh'},
                {country:'CH', map:'switzerlandHigh'},
                {country:'SE', map:'swedenHigh'},
                {country:'ES', map:'spainHigh'},
                {country:'SG', map:'singaporeHigh'},
                {country:'NO', map:'norwayHigh'},
                {country:'NL', map:'netherlandsHigh'},
                {country:'NZ', map:'newZealandHigh'},
                {country:'LU', map:'luxembourgHigh'},
                {country:'JP', map:'japanHigh'},
                {country:'IL', map:'isrealHigh'},
                {country:'IT', map:'italyHigh'},
                {country:'IE', map:'irelandHigh'},
                {country:'HU', map:'hungaryHigh'},
                {country:'DE', map:'germanyHigh'},
                {country:'FR', map:'franceHigh'},
                {country:'FI', map:'finlandHigh'},
                {country:'DK', map:'denmarkHigh'},
                {country:'CZ', map:'czechRepublicHigh'},
                {country:'CN', map:'chinaHigh'},
                {country:'CA', map:'canadaHigh'},
                {country:'BE', map:'belgiumHigh'},
                {country:'AT', map:'austriaHigh'},
                {country:'AU', map:'australiaHigh'},
                {country:'ZA', map:'southAfricaHigh'},
                {country:'KR', map:'southKoreaHigh'},
                {country:'CL', map:'chileHigh'}
            ]
        };

        this.renderMap          = this.renderMap.bind(this);
        this.onDataUpdated  = this.onDataUpdated.bind(this);
        this.onMapClick         = this.onMapClick.bind(this);
        this.getLatLong         = this.getLatLong.bind(this);
        this.changeLabel        = this.changeLabel.bind(this);

  }

    changeLabel(event) {
        console.log("Changing Labels");

        //var mapConfig = this.state.mapconfig;
        //var defaultProvider = this.state.defaultProvider;
        //mapConfig.dataProvider = defaultProvider;

        this.setState({
            counts: {
                continents: {
                    europe: 10,
                    north_america: 100
                },
                countries: {
                    US: 50,
                    CA: 4
                }
            }
        }, function() {

            this.renderMap();

        });
    }

    onDataUpdated(event) {
        console.log("Data Updated!");
        console.log(event);

    }

    onMapClick(event) {
        //console.log(event);
    }

    getLatLong(area) {

        var latlong = {};
        latlong["AD"] = {"latitude":42.5, "longitude":1.5};
        latlong["AE"] = {"latitude":24, "longitude":54};
        latlong["AF"] = {"latitude":33, "longitude":65};
        latlong["AG"] = {"latitude":17.05, "longitude":-61.8};
        latlong["AI"] = {"latitude":18.25, "longitude":-63.1667};
        latlong["AL"] = {"latitude":41, "longitude":20};
        latlong["AM"] = {"latitude":40, "longitude":45};
        latlong["AN"] = {"latitude":12.25, "longitude":-68.75};
        latlong["AO"] = {"latitude":-12.5, "longitude":18.5};
        latlong["AP"] = {"latitude":35, "longitude":105};
        latlong["AQ"] = {"latitude":-90, "longitude":0};
        latlong["AR"] = {"latitude":-34, "longitude":-64};
        latlong["AS"] = {"latitude":-14.3333, "longitude":-170};
        latlong["AT"] = {"latitude":47.3333, "longitude":13.3333};
        latlong["AU"] = {"latitude":-27, "longitude":133};
        latlong["AW"] = {"latitude":12.5, "longitude":-69.9667};
        latlong["AZ"] = {"latitude":40.5, "longitude":47.5};
        latlong["BA"] = {"latitude":44, "longitude":18};
        latlong["BB"] = {"latitude":13.1667, "longitude":-59.5333};
        latlong["BD"] = {"latitude":24, "longitude":90};
        latlong["BE"] = {"latitude":50.8333, "longitude":4};
        latlong["BF"] = {"latitude":13, "longitude":-2};
        latlong["BG"] = {"latitude":43, "longitude":25};
        latlong["BH"] = {"latitude":26, "longitude":50.55};
        latlong["BI"] = {"latitude":-3.5, "longitude":30};
        latlong["BJ"] = {"latitude":9.5, "longitude":2.25};
        latlong["BM"] = {"latitude":32.3333, "longitude":-64.75};
        latlong["BN"] = {"latitude":4.5, "longitude":114.6667};
        latlong["BO"] = {"latitude":-17, "longitude":-65};
        latlong["BR"] = {"latitude":-10, "longitude":-55};
        latlong["BS"] = {"latitude":24.25, "longitude":-76};
        latlong["BT"] = {"latitude":27.5, "longitude":90.5};
        latlong["BV"] = {"latitude":-54.4333, "longitude":3.4};
        latlong["BW"] = {"latitude":-22, "longitude":24};
        latlong["BY"] = {"latitude":53, "longitude":28};
        latlong["BZ"] = {"latitude":17.25, "longitude":-88.75};
        latlong["CA"] = {"latitude":54, "longitude":-100};
        latlong["CC"] = {"latitude":-12.5, "longitude":96.8333};
        latlong["CD"] = {"latitude":0, "longitude":25};
        latlong["CF"] = {"latitude":7, "longitude":21};
        latlong["CG"] = {"latitude":-1, "longitude":15};
        latlong["CH"] = {"latitude":47, "longitude":8};
        latlong["CI"] = {"latitude":8, "longitude":-5};
        latlong["CK"] = {"latitude":-21.2333, "longitude":-159.7667};
        latlong["CL"] = {"latitude":-30, "longitude":-71};
        latlong["CM"] = {"latitude":6, "longitude":12};
        latlong["CN"] = {"latitude":35, "longitude":105};
        latlong["CO"] = {"latitude":4, "longitude":-72};
        latlong["CR"] = {"latitude":10, "longitude":-84};
        latlong["CU"] = {"latitude":21.5, "longitude":-80};
        latlong["CV"] = {"latitude":16, "longitude":-24};
        latlong["CX"] = {"latitude":-10.5, "longitude":105.6667};
        latlong["CY"] = {"latitude":35, "longitude":33};
        latlong["CZ"] = {"latitude":49.75, "longitude":15.5};
        latlong["DE"] = {"latitude":51, "longitude":9};
        latlong["DJ"] = {"latitude":11.5, "longitude":43};
        latlong["DK"] = {"latitude":56, "longitude":10};
        latlong["DM"] = {"latitude":15.4167, "longitude":-61.3333};
        latlong["DO"] = {"latitude":19, "longitude":-70.6667};
        latlong["DZ"] = {"latitude":28, "longitude":3};
        latlong["EC"] = {"latitude":-2, "longitude":-77.5};
        latlong["EE"] = {"latitude":59, "longitude":26};
        latlong["EG"] = {"latitude":27, "longitude":30};
        latlong["EH"] = {"latitude":24.5, "longitude":-13};
        latlong["ER"] = {"latitude":15, "longitude":39};
        latlong["ES"] = {"latitude":40, "longitude":-4};
        latlong["ET"] = {"latitude":8, "longitude":38};
        latlong["EU"] = {"latitude":47, "longitude":8};
        latlong["FI"] = {"latitude":62, "longitude":26};
        latlong["FJ"] = {"latitude":-18, "longitude":175};
        latlong["FK"] = {"latitude":-51.75, "longitude":-59};
        latlong["FM"] = {"latitude":6.9167, "longitude":158.25};
        latlong["FO"] = {"latitude":62, "longitude":-7};
        latlong["FR"] = {"latitude":46, "longitude":2};
        latlong["GA"] = {"latitude":-1, "longitude":11.75};
        latlong["GB"] = {"latitude":54, "longitude":-2};
        latlong["GD"] = {"latitude":12.1167, "longitude":-61.6667};
        latlong["GE"] = {"latitude":42, "longitude":43.5};
        latlong["GF"] = {"latitude":4, "longitude":-53};
        latlong["GH"] = {"latitude":8, "longitude":-2};
        latlong["GI"] = {"latitude":36.1833, "longitude":-5.3667};
        latlong["GL"] = {"latitude":72, "longitude":-40};
        latlong["GM"] = {"latitude":13.4667, "longitude":-16.5667};
        latlong["GN"] = {"latitude":11, "longitude":-10};
        latlong["GP"] = {"latitude":16.25, "longitude":-61.5833};
        latlong["GQ"] = {"latitude":2, "longitude":10};
        latlong["GR"] = {"latitude":39, "longitude":22};
        latlong["GS"] = {"latitude":-54.5, "longitude":-37};
        latlong["GT"] = {"latitude":15.5, "longitude":-90.25};
        latlong["GU"] = {"latitude":13.4667, "longitude":144.7833};
        latlong["GW"] = {"latitude":12, "longitude":-15};
        latlong["GY"] = {"latitude":5, "longitude":-59};
        latlong["HK"] = {"latitude":22.25, "longitude":114.1667};
        latlong["HM"] = {"latitude":-53.1, "longitude":72.5167};
        latlong["HN"] = {"latitude":15, "longitude":-86.5};
        latlong["HR"] = {"latitude":45.1667, "longitude":15.5};
        latlong["HT"] = {"latitude":19, "longitude":-72.4167};
        latlong["HU"] = {"latitude":47, "longitude":20};
        latlong["ID"] = {"latitude":-5, "longitude":120};
        latlong["IE"] = {"latitude":53, "longitude":-8};
        latlong["IL"] = {"latitude":31.5, "longitude":34.75};
        latlong["IN"] = {"latitude":20, "longitude":77};
        latlong["IO"] = {"latitude":-6, "longitude":71.5};
        latlong["IQ"] = {"latitude":33, "longitude":44};
        latlong["IR"] = {"latitude":32, "longitude":53};
        latlong["IS"] = {"latitude":65, "longitude":-18};
        latlong["IT"] = {"latitude":42.8333, "longitude":12.8333};
        latlong["JM"] = {"latitude":18.25, "longitude":-77.5};
        latlong["JO"] = {"latitude":31, "longitude":36};
        latlong["JP"] = {"latitude":36, "longitude":138};
        latlong["KE"] = {"latitude":1, "longitude":38};
        latlong["KG"] = {"latitude":41, "longitude":75};
        latlong["KH"] = {"latitude":13, "longitude":105};
        latlong["KI"] = {"latitude":1.4167, "longitude":173};
        latlong["KM"] = {"latitude":-12.1667, "longitude":44.25};
        latlong["KN"] = {"latitude":17.3333, "longitude":-62.75};
        latlong["KP"] = {"latitude":40, "longitude":127};
        latlong["KR"] = {"latitude":37, "longitude":127.5};
        latlong["KW"] = {"latitude":29.3375, "longitude":47.6581};
        latlong["KY"] = {"latitude":19.5, "longitude":-80.5};
        latlong["KZ"] = {"latitude":48, "longitude":68};
        latlong["LA"] = {"latitude":18, "longitude":105};
        latlong["LB"] = {"latitude":33.8333, "longitude":35.8333};
        latlong["LC"] = {"latitude":13.8833, "longitude":-61.1333};
        latlong["LI"] = {"latitude":47.1667, "longitude":9.5333};
        latlong["LK"] = {"latitude":7, "longitude":81};
        latlong["LR"] = {"latitude":6.5, "longitude":-9.5};
        latlong["LS"] = {"latitude":-29.5, "longitude":28.5};
        latlong["LT"] = {"latitude":55, "longitude":24};
        latlong["LU"] = {"latitude":49.75, "longitude":6};
        latlong["LV"] = {"latitude":57, "longitude":25};
        latlong["LY"] = {"latitude":25, "longitude":17};
        latlong["MA"] = {"latitude":32, "longitude":-5};
        latlong["MC"] = {"latitude":43.7333, "longitude":7.4};
        latlong["MD"] = {"latitude":47, "longitude":29};
        latlong["ME"] = {"latitude":42.5, "longitude":19.4};
        latlong["MG"] = {"latitude":-20, "longitude":47};
        latlong["MH"] = {"latitude":9, "longitude":168};
        latlong["MK"] = {"latitude":41.8333, "longitude":22};
        latlong["ML"] = {"latitude":17, "longitude":-4};
        latlong["MM"] = {"latitude":22, "longitude":98};
        latlong["MN"] = {"latitude":46, "longitude":105};
        latlong["MO"] = {"latitude":22.1667, "longitude":113.55};
        latlong["MP"] = {"latitude":15.2, "longitude":145.75};
        latlong["MQ"] = {"latitude":14.6667, "longitude":-61};
        latlong["MR"] = {"latitude":20, "longitude":-12};
        latlong["MS"] = {"latitude":16.75, "longitude":-62.2};
        latlong["MT"] = {"latitude":35.8333, "longitude":14.5833};
        latlong["MU"] = {"latitude":-20.2833, "longitude":57.55};
        latlong["MV"] = {"latitude":3.25, "longitude":73};
        latlong["MW"] = {"latitude":-13.5, "longitude":34};
        latlong["MX"] = {"latitude":23, "longitude":-102};
        latlong["MY"] = {"latitude":2.5, "longitude":112.5};
        latlong["MZ"] = {"latitude":-18.25, "longitude":35};
        latlong["NA"] = {"latitude":-22, "longitude":17};
        latlong["NC"] = {"latitude":-21.5, "longitude":165.5};
        latlong["NE"] = {"latitude":16, "longitude":8};
        latlong["NF"] = {"latitude":-29.0333, "longitude":167.95};
        latlong["NG"] = {"latitude":10, "longitude":8};
        latlong["NI"] = {"latitude":13, "longitude":-85};
        latlong["NL"] = {"latitude":52.5, "longitude":5.75};
        latlong["NO"] = {"latitude":62, "longitude":10};
        latlong["NP"] = {"latitude":28, "longitude":84};
        latlong["NR"] = {"latitude":-0.5333, "longitude":166.9167};
        latlong["NU"] = {"latitude":-19.0333, "longitude":-169.8667};
        latlong["NZ"] = {"latitude":-41, "longitude":174};
        latlong["OM"] = {"latitude":21, "longitude":57};
        latlong["PA"] = {"latitude":9, "longitude":-80};
        latlong["PE"] = {"latitude":-10, "longitude":-76};
        latlong["PF"] = {"latitude":-15, "longitude":-140};
        latlong["PG"] = {"latitude":-6, "longitude":147};
        latlong["PH"] = {"latitude":13, "longitude":122};
        latlong["PK"] = {"latitude":30, "longitude":70};
        latlong["PL"] = {"latitude":52, "longitude":20};
        latlong["PM"] = {"latitude":46.8333, "longitude":-56.3333};
        latlong["PR"] = {"latitude":18.25, "longitude":-66.5};
        latlong["PS"] = {"latitude":32, "longitude":35.25};
        latlong["PT"] = {"latitude":39.5, "longitude":-8};
        latlong["PW"] = {"latitude":7.5, "longitude":134.5};
        latlong["PY"] = {"latitude":-23, "longitude":-58};
        latlong["QA"] = {"latitude":25.5, "longitude":51.25};
        latlong["RE"] = {"latitude":-21.1, "longitude":55.6};
        latlong["RO"] = {"latitude":46, "longitude":25};
        latlong["RS"] = {"latitude":44, "longitude":21};
        latlong["RU"] = {"latitude":60, "longitude":100};
        latlong["RW"] = {"latitude":-2, "longitude":30};
        latlong["SA"] = {"latitude":25, "longitude":45};
        latlong["SB"] = {"latitude":-8, "longitude":159};
        latlong["SC"] = {"latitude":-4.5833, "longitude":55.6667};
        latlong["SD"] = {"latitude":15, "longitude":30};
        latlong["SE"] = {"latitude":62, "longitude":15};
        latlong["SG"] = {"latitude":1.3667, "longitude":103.8};
        latlong["SH"] = {"latitude":-15.9333, "longitude":-5.7};
        latlong["SI"] = {"latitude":46, "longitude":15};
        latlong["SJ"] = {"latitude":78, "longitude":20};
        latlong["SK"] = {"latitude":48.6667, "longitude":19.5};
        latlong["SL"] = {"latitude":8.5, "longitude":-11.5};
        latlong["SM"] = {"latitude":43.7667, "longitude":12.4167};
        latlong["SN"] = {"latitude":14, "longitude":-14};
        latlong["SO"] = {"latitude":10, "longitude":49};
        latlong["SR"] = {"latitude":4, "longitude":-56};
        latlong["ST"] = {"latitude":1, "longitude":7};
        latlong["SV"] = {"latitude":13.8333, "longitude":-88.9167};
        latlong["SY"] = {"latitude":35, "longitude":38};
        latlong["SZ"] = {"latitude":-26.5, "longitude":31.5};
        latlong["TC"] = {"latitude":21.75, "longitude":-71.5833};
        latlong["TD"] = {"latitude":15, "longitude":19};
        latlong["TF"] = {"latitude":-43, "longitude":67};
        latlong["TG"] = {"latitude":8, "longitude":1.1667};
        latlong["TH"] = {"latitude":15, "longitude":100};
        latlong["TJ"] = {"latitude":39, "longitude":71};
        latlong["TK"] = {"latitude":-9, "longitude":-172};
        latlong["TM"] = {"latitude":40, "longitude":60};
        latlong["TN"] = {"latitude":34, "longitude":9};
        latlong["TO"] = {"latitude":-20, "longitude":-175};
        latlong["TR"] = {"latitude":39, "longitude":35};
        latlong["TT"] = {"latitude":11, "longitude":-61};
        latlong["TV"] = {"latitude":-8, "longitude":178};
        latlong["TW"] = {"latitude":23.5, "longitude":121};
        latlong["TZ"] = {"latitude":-6, "longitude":35};
        latlong["UA"] = {"latitude":49, "longitude":32};
        latlong["UG"] = {"latitude":1, "longitude":32};
        latlong["UM"] = {"latitude":19.2833, "longitude":166.6};
        latlong["US"] = {"latitude":38, "longitude":-97};
        latlong["UY"] = {"latitude":-33, "longitude":-56};
        latlong["UZ"] = {"latitude":41, "longitude":64};
        latlong["VA"] = {"latitude":41.9, "longitude":12.45};
        latlong["VC"] = {"latitude":13.25, "longitude":-61.2};
        latlong["VE"] = {"latitude":8, "longitude":-66};
        latlong["VG"] = {"latitude":18.5, "longitude":-64.5};
        latlong["VI"] = {"latitude":18.3333, "longitude":-64.8333};
        latlong["VN"] = {"latitude":16, "longitude":106};
        latlong["VU"] = {"latitude":-16, "longitude":167};
        latlong["WF"] = {"latitude":-13.3, "longitude":-176.2};
        latlong["WS"] = {"latitude":-13.5833, "longitude":-172.3333};
        latlong["YE"] = {"latitude":15, "longitude":48};
        latlong["YT"] = {"latitude":-12.8333, "longitude":45.1667};
        latlong["ZA"] = {"latitude":-29, "longitude":24};
        latlong["ZM"] = {"latitude":-15, "longitude":30};
        latlong["ZW"] = {"latitude":-20, "longitude":30};

        return latlong[area];

    }

    renderMap() {

        // Icons
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      

        const mapConfig = this.state.mapconfig; 
        var maps = this.state.maps;
        var worldDataProviderAreas = [];
        const backToContinents = { 
            "svgPath": backIconSVG, 
            "id": "contBackButton", 
            "label": "Back to continent map", 
            "labelColor": "#fffdcf",
            "labelRollOverColor": "#fffdcf",
            "color": "#e49224",
            "rollOverColor": "#f2a43c",
            "useTargetsZoomValues": false, 
            "left": 30, 
            "bottom": 30, 
            "labelFontSize": 15, 
            "selectable": true
        };
        const backToWorld = { 
            "svgPath": backIconSVG, 
            "id": "worldBackButton", 
            "label": "Back to world map", 
            "labelColor": "#fffdcf",
            "labelRollOverColor": "#fffdcf",
            "color": "#e49224",
            "rollOverColor": "#f2a43c",
            "useTargetsZoomValues": false, 
            "left": 30, 
            "bottom": 30, 
            "labelFontSize": 15, 
            "selectable": true
        };

        Object.keys(maps).forEach(function(key) {
            var mapObj = maps[key];         
            var area = {
                "id": mapObj.country,
                "linkToObject": {
                    "map": mapObj.map,
                    "getAreasFromMap": true,
                    "images": [
                        {
                            "svgPath": icon,
                            "color": "#e49224",
                            "latitude": 38.013476,
                            "longitude": -121.26709,
                            "title": "COMPANY NAME",
                            "description": "DESCRIPTION GOES HERE PER COMPANY"
                        },
                        {
                            "svgPath": icon,
                            "color": "#e49224",
                            "latitude": 38.272689,
                            "longitude": -85.759277,
                            "title": "COMPANY NAME 2",
                            "description": "DESCRIPTION GOES HERE PER COMPANY"
                        },
                        backToWorld
                    ],
                },
                "color": "#605675",
            };

            worldDataProviderAreas.push(area);

        });

        var worldDataProvider = {
            "map": "worldHigh",
            "getAreasFromMap": true,
            "areas": worldDataProviderAreas,
            "images": [
                {
                    "type": "circle",
                    "label": this.state.counts.countries.US,
                    "labelColor": "#fffdcf",
                    "labelRollOverColor": "#fffdcf",
                    "color": "#e49224",
                    "rollOverColor": "#f2a43c",
                    "latitude": this.getLatLong("US").latitude,
                    "longitude": this.getLatLong("US").longitude,
                    "scale": 4,
                    "labelShiftX": -20,
                    "linkToObject": "US",
                },
                {
                    "type": "circle",
                    "label": this.state.counts.countries.CA,
                    "labelColor": "#fffdcf",
                    "labelRollOverColor": "#fffdcf",
                    "color": "#e49224",
                    "rollOverColor": "#f2a43c",
                    "latitude": this.getLatLong("CA").latitude,
                    "longitude": this.getLatLong("CA").longitude,
                    "scale": 4,
                    "labelShiftX": -20,
                    "linkToObject": "CA",
                },
                {
                    "type": "circle",
                    "label": "8",
                    "labelColor": "#fffdcf",
                    "labelRollOverColor": "#fffdcf",
                    "color": "#e49224",
                    "rollOverColor": "#f2a43c",
                    "latitude": this.getLatLong("GB").latitude,
                    "longitude": this.getLatLong("GB").longitude,
                    "scale": 2,
                    "labelShiftX": -12,
                    "linkToObject": "GB",
                },
                {
                    "type": "circle",
                    "label": "2",
                    "labelColor": "#fffdcf",
                    "labelRollOverColor": "#fffdcf",
                    "color": "#e49224",
                    "rollOverColor": "#f2a43c",
                    "latitude": this.getLatLong("FR").latitude,
                    "longitude": this.getLatLong("FR").longitude,
                    "scale": 2,
                    "labelShiftX": -12,
                    "linkToObject": "FR",
                },
                backToContinents
            ],
        };

        var continentsDataProvider = {
            "map": "continentsLow",
            "areas": [ 
                {
                    "id": "africa",
                    "linkToObject": worldDataProvider,
                    "color": "#605675",
                    "passZoomValuesToTarget": true
                }, {
                    "id": "asia",
                    "linkToObject": worldDataProvider,
                    "color": "#a791b4",
                    "passZoomValuesToTarget": true
                }, {
                    "id": "australia",
                    "linkToObject": worldDataProvider,
                    "color": "#7f7891",
                    "passZoomValuesToTarget": true
                }, {
                    "id": "europe",
                    "linkToObject": worldDataProvider,
                    "color": "#9186a2",
                    "passZoomValuesToTarget": true
                }, {
                    "id": "north_america",
                    "linkToObject": worldDataProvider,
                    "color": "#868191",
                    "passZoomValuesToTarget": true
                }, {
                    "id": "south_america",
                    "linkToObject": worldDataProvider,
                    "color": "#8f7ea9",
                    "passZoomValuesToTarget": true
                } 
            ],
            "images": [
                {
                    "type": "circle",
                    "label": this.state.counts.continents.north_america,
                    "labelColor": "#fffdcf",
                    "labelRollOverColor": "#fffdcf",
                    "color": "#e49224",
                    "rollOverColor": "#f2a43c",
                    "latitude": this.getLatLong("US").latitude,
                    "longitude": this.getLatLong("US").longitude,
                    "scale": 4,
                    "labelShiftX": -20,
                    "linkToObject": "north_america",
                },
                {
                    "type": "circle",
                    "label": this.state.counts.continents.europe,
                    "labelColor": "#fffdcf",
                    "labelRollOverColor": "#fffdcf",
                    "color": "#e49224",
                    "rollOverColor": "#f2a43c",
                    "latitude": this.getLatLong("DE").latitude,
                    "longitude": this.getLatLong("DE").longitude,
                    "scale": 4,
                    "labelShiftX": -20,
                    "linkToObject": "europe",
                },
            ],
        };

        console.log(continentsDataProvider);

        mapConfig.dataProvider = continentsDataProvider;

        this.setState({
            mapconfig: mapConfig,
            defaultProvider: continentsDataProvider
        });

    }

    componentDidMount() {

        this.renderMap();

    }

  render() {

    return (
            <div style={this.state.mapstyle}>
                <AmCharts.React
                    ref="reactmap"
                    {...this.state.mapconfig}
                />
                <button onClick={()=> this.changeLabel()}>Change Labels</button>
            </div>
    );
  }

}

Here is the HTML page which displays the map (attached is the index.html with JS):

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>React Map</title>

    <link rel="stylesheet" href="https://www.amcharts.com/lib/3/plugins/export/export.css" type="text/css" media="all" />

    <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>
    <script src="https://www.amcharts.com/lib/3/plugins/export/export.min.js"></script>

</head>
<body>
    <h1>React AmCharts Map</h1>

    <!-- React element goes here -->
    <div id="react-map"></div>

    <script src="./js/jquery-3.1.1.min.js"></script>

    <!-- one script to rule them all (in production) -->
    <script src="js/tracker-map/tracker-map.js"></script>
    <script src="js/tracker-map/tracker-map-bundled.js"></script>
</body>
</html>

app.zip

[joesken]

I've done a bit more investigations on this and have narrowed it down a bit.

For the scenario (based on the example code above) where you go from Continent View to Worldview and then try to change the state via the "Change Labels" button the issue is in line 150 of amcharts3-react.js.

It is trying to access a key which the object does not have:

            if (updateArray(obj[key], x, y)) {
              didUpdate = true;
            }

This was easily fixed by checking obj.hasOwnProperty(key)).

The second scenario is in the same area but a different issue. Under the scenario of going from Worldview to Country view and then updating the state the issue arises when setting the key for 'images'. The object is undefined. However it is an array of objects and the comparison on line 144 if (x !== y) is failing. (They are the same). Thus if this check was working correctly then it would never get to call updateArray(obj..).

Hope this helps.

Joe

[Pauan]

@AaronONeill Thanks for reporting this!

@joesken Thanks for the detailed information!

I'll look into fixing this ASAP.

[Pauan]

@AaronONeill Sorry for the wait, I have fixed this in version 2.0.3