Nokta haritası, idari bölgelerin bir veri değerine göre renklendirildiği veya gölgelendirildiği bir tematik harita türüdür. Her idari alanın bir sayısal değer aralığıyla ilişkilendirildiği bir veri kümesine göre haritaya stil uygulamak için google.maps.FeatureStyleFunction kullanabilirsiniz. Aşağıdaki örnek haritada, ABD'deki eyalet nüfus verilerini gösteren bir renklendirilmiş harita gösterilmektedir.
Bu örnekte veriler, her eyaletin görünen adını sayısal bir nüfus değeriyle eşleştiren bir anahtar/değer çiftleri dizisinden oluşur. maps.FeatureStyleFunction, her bölgeyi dizideki değerlere göre koşullu olarak renklendirir.
TypeScript
featureLayer.style = featureStyleFunctionOptions => { const placeFeature = featureStyleFunctionOptions.feature as google.maps.PlaceFeature; const population = states[placeFeature.placeId]; let fillColor; // Specify colors using any of the following: // * Named ('green') // * Hexadecimal ('#FF0000') // * RGB ('rgb(0, 0, 255)') // * HSL ('hsl(60, 100%, 50%)') if (population < 2000000) { fillColor = 'green' } else if (population < 5000000) { fillColor = 'red' } else if (population < 10000000) { fillColor = 'blue' } else if (population < 40000000) { fillColor = 'yellow' } return { fillColor, fillOpacity: 0.5 } }
JavaScript
featureLayer.style = (featureStyleFunctionOptions) => { const placeFeature = featureStyleFunctionOptions.feature; const population = states[placeFeature.placeId]; let fillColor; // Specify colors using any of the following: // * Named ('green') // * Hexadecimal ('#FF0000') // * RGB ('rgb(0, 0, 255)') // * HSL ('hsl(60, 100%, 50%)') if (population < 2000000) { fillColor = "green"; } else if (population < 5000000) { fillColor = "red"; } else if (population < 10000000) { fillColor = "blue"; } else if (population < 40000000) { fillColor = "yellow"; } return { fillColor, fillOpacity: 0.5, }; };
Eksiksiz örnek kod
TypeScript
async function initMap() { // Request needed libraries. const { Map } = await google.maps.importLibrary("maps") as google.maps.MapsLibrary; const map = new Map(document.getElementById('map') as HTMLElement, { center: { lat: 40.76, lng: -101.64 }, zoom: 5, // In the cloud console, configure this Map ID with a style that enables the // "Administrative Area Level 1" feature layer. mapId: '7ba16be0c9375fa7', }); const featureLayer = map.getFeatureLayer(google.maps.FeatureType.ADMINISTRATIVE_AREA_LEVEL_1); featureLayer.style = featureStyleFunctionOptions => { const placeFeature = featureStyleFunctionOptions.feature as google.maps.PlaceFeature; const population = states[placeFeature.placeId]; let fillColor; // Specify colors using any of the following: // * Named ('green') // * Hexadecimal ('#FF0000') // * RGB ('rgb(0, 0, 255)') // * HSL ('hsl(60, 100%, 50%)') if (population < 2000000) { fillColor = 'green' } else if (population < 5000000) { fillColor = 'red' } else if (population < 10000000) { fillColor = 'blue' } else if (population < 40000000) { fillColor = 'yellow' } return { fillColor, fillOpacity: 0.5 } } // Population data by state. const states = { "ChIJdf5LHzR_hogR6czIUzU0VV4": 5039877, // Alabama "ChIJG8CuwJzfAFQRNduKqSde27w": 732673, // Alaska "ChIJaxhMy-sIK4cRcc3Bf7EnOUI": 7276316, // Arizona "ChIJYSc_dD-e0ocR0NLf_z5pBaQ": 3025891, // Arkansas "ChIJPV4oX_65j4ARVW8IJ6IJUYs": 39237836, // California "ChIJt1YYm3QUQIcR_6eQSTGDVMc": 5812069, // Colorado "ChIJpVER8hFT5okR5XBhBVttmq4": 3605597, // Connecticut "ChIJO9YMTXYFx4kReOgEjBItHZQ": 1003384, // Delaware "ChIJvypWkWV2wYgR0E7HW9MTLvc": 21781128, // Florida "ChIJV4FfHcU28YgR5xBP7BC8hGY": 10799566, // Georgia "ChIJBeB5Twbb_3sRKIbMdNKCd0s": 1441553, // Hawaii "ChIJ6Znkhaj_WFMRWIf3FQUwa9A": 1900923, // Idaho "ChIJGSZubzgtC4gRVlkRZFCCFX8": 12671469, // Illinois "ChIJHRv42bxQa4gRcuwyy84vEH4": 6805985, // Indiana "ChIJGWD48W9e7ocR2VnHV0pj78Y": 3193079, // Iowa "ChIJawF8cXEXo4cRXwk-S6m0wmg": 2934582, // Kansas "ChIJyVMZi0xzQogR_N_MxU5vH3c": 4509394, // Kentucky "ChIJZYIRslSkIIYRA0flgTL3Vck": 4624047, // Louisiana "ChIJ1YpTHd4dsEwR0KggZ2_MedY": 1372247, // Maine "ChIJ35Dx6etNtokRsfZVdmU3r_I": 6165129, // Maryland "ChIJ_b9z6W1l44kRHA2DVTbQxkU": 6984723, // Massachussetts "ChIJEQTKxz2qTE0Rs8liellI3Zc": 10050811, // Michigan "ChIJmwt4YJpbWE0RD6L-EJvJogI": 5707390, // Minnesota "ChIJGdRK5OQyKIYR2qbc6X8XDWI": 2949965, // Mississippi "ChIJfeMiSNXmwIcRcr1mBFnEW7U": 6168187, // Misssouri "ChIJ04p7LZwrQVMRGGwqz1jWcfU": 1104271, // Montana "ChIJ7fwMtciNk4cRxArzDwyQJ6E": 1963692, // Nebraska "ChIJcbTe-KEKmYARs5X8qooDR88": 3143991, // Nevada "ChIJ66bAnUtEs0wR64CmJa8CyNc": 1388992, // New Hampshire "ChIJn0AAnpX7wIkRjW0_-Ad70iw": 9267130, // New Jersey "ChIJqVKY50NQGIcRup41Yxpuv0Y": 2115877, // New Mexico "ChIJqaUj8fBLzEwRZ5UY3sHGz90": 19835913, // New York "ChIJgRo4_MQfVIgRGa4i6fUwP60": 10551162, // North Carolina "ChIJY-nYVxKD11IRyc9egzmahA0": 774948, // North Dakota "ChIJwY5NtXrpNogRFtmfnDlkzeU": 11780017, // Ohio "ChIJnU-ssRE5rIcRSOoKQDPPHF0": 3986639, // Oklahoma "ChIJVWqfm3xuk1QRdrgLettlTH0": 4246155, // Oregon "ChIJieUyHiaALYgRPbQiUEchRsI": 12964056, // Pennsylvania "ChIJD9cOYhQ15IkR5wbB57wYTh4": 1095610, // Rhode Island "ChIJ49ExeWml-IgRnhcF9TKh_7k": 5190705, // South Carolina "ChIJpTjphS1DfYcRt6SGMSnW8Ac": 895376, // South Dakota "ChIJA8-XniNLYYgRVpGBpcEgPgM": 6975218, // Tennessee "ChIJSTKCCzZwQIYRPN4IGI8c6xY": 29527941, // Texas "ChIJzfkTj8drTIcRP0bXbKVK370": 3337975, // Utah "ChIJ_87aSGzctEwRtGtUNnSJTSY": 645570, // Vermont "ChIJzbK8vXDWTIgRlaZGt0lBTsA": 8642274, // Virginia "ChIJ-bDD5__lhVQRuvNfbGh4QpQ": 7738692, // Washington "ChIJRQnL1KVUSogRQzrN3mjHALs": 1782959, // West Virginia "ChIJr-OEkw_0qFIR1kmG-LjV1fI": 5895908, // Wisconsin "ChIJaS7hSDTiXocRLzh90nkisCY": 578803, // Wyoming }; } initMap();
JavaScript
async function initMap() { // Request needed libraries. const { Map } = await google.maps.importLibrary("maps"); const map = new Map(document.getElementById("map"), { center: { lat: 40.76, lng: -101.64 }, zoom: 5, // In the cloud console, configure this Map ID with a style that enables the // "Administrative Area Level 1" feature layer. mapId: "7ba16be0c9375fa7", }); const featureLayer = map.getFeatureLayer( google.maps.FeatureType.ADMINISTRATIVE_AREA_LEVEL_1, ); featureLayer.style = (featureStyleFunctionOptions) => { const placeFeature = featureStyleFunctionOptions.feature; const population = states[placeFeature.placeId]; let fillColor; // Specify colors using any of the following: // * Named ('green') // * Hexadecimal ('#FF0000') // * RGB ('rgb(0, 0, 255)') // * HSL ('hsl(60, 100%, 50%)') if (population < 2000000) { fillColor = "green"; } else if (population < 5000000) { fillColor = "red"; } else if (population < 10000000) { fillColor = "blue"; } else if (population < 40000000) { fillColor = "yellow"; } return { fillColor, fillOpacity: 0.5, }; }; // Population data by state. const states = { "ChIJdf5LHzR_hogR6czIUzU0VV4": 5039877, // Alabama "ChIJG8CuwJzfAFQRNduKqSde27w": 732673, // Alaska "ChIJaxhMy-sIK4cRcc3Bf7EnOUI": 7276316, // Arizona "ChIJYSc_dD-e0ocR0NLf_z5pBaQ": 3025891, // Arkansas "ChIJPV4oX_65j4ARVW8IJ6IJUYs": 39237836, // California "ChIJt1YYm3QUQIcR_6eQSTGDVMc": 5812069, // Colorado "ChIJpVER8hFT5okR5XBhBVttmq4": 3605597, // Connecticut "ChIJO9YMTXYFx4kReOgEjBItHZQ": 1003384, // Delaware "ChIJvypWkWV2wYgR0E7HW9MTLvc": 21781128, // Florida "ChIJV4FfHcU28YgR5xBP7BC8hGY": 10799566, // Georgia "ChIJBeB5Twbb_3sRKIbMdNKCd0s": 1441553, // Hawaii "ChIJ6Znkhaj_WFMRWIf3FQUwa9A": 1900923, // Idaho "ChIJGSZubzgtC4gRVlkRZFCCFX8": 12671469, // Illinois "ChIJHRv42bxQa4gRcuwyy84vEH4": 6805985, // Indiana "ChIJGWD48W9e7ocR2VnHV0pj78Y": 3193079, // Iowa "ChIJawF8cXEXo4cRXwk-S6m0wmg": 2934582, // Kansas "ChIJyVMZi0xzQogR_N_MxU5vH3c": 4509394, // Kentucky "ChIJZYIRslSkIIYRA0flgTL3Vck": 4624047, // Louisiana "ChIJ1YpTHd4dsEwR0KggZ2_MedY": 1372247, // Maine "ChIJ35Dx6etNtokRsfZVdmU3r_I": 6165129, // Maryland "ChIJ_b9z6W1l44kRHA2DVTbQxkU": 6984723, // Massachussetts "ChIJEQTKxz2qTE0Rs8liellI3Zc": 10050811, // Michigan "ChIJmwt4YJpbWE0RD6L-EJvJogI": 5707390, // Minnesota "ChIJGdRK5OQyKIYR2qbc6X8XDWI": 2949965, // Mississippi "ChIJfeMiSNXmwIcRcr1mBFnEW7U": 6168187, // Misssouri "ChIJ04p7LZwrQVMRGGwqz1jWcfU": 1104271, // Montana "ChIJ7fwMtciNk4cRxArzDwyQJ6E": 1963692, // Nebraska "ChIJcbTe-KEKmYARs5X8qooDR88": 3143991, // Nevada "ChIJ66bAnUtEs0wR64CmJa8CyNc": 1388992, // New Hampshire "ChIJn0AAnpX7wIkRjW0_-Ad70iw": 9267130, // New Jersey "ChIJqVKY50NQGIcRup41Yxpuv0Y": 2115877, // New Mexico "ChIJqaUj8fBLzEwRZ5UY3sHGz90": 19835913, // New York "ChIJgRo4_MQfVIgRGa4i6fUwP60": 10551162, // North Carolina "ChIJY-nYVxKD11IRyc9egzmahA0": 774948, // North Dakota "ChIJwY5NtXrpNogRFtmfnDlkzeU": 11780017, // Ohio "ChIJnU-ssRE5rIcRSOoKQDPPHF0": 3986639, // Oklahoma "ChIJVWqfm3xuk1QRdrgLettlTH0": 4246155, // Oregon "ChIJieUyHiaALYgRPbQiUEchRsI": 12964056, // Pennsylvania "ChIJD9cOYhQ15IkR5wbB57wYTh4": 1095610, // Rhode Island "ChIJ49ExeWml-IgRnhcF9TKh_7k": 5190705, // South Carolina "ChIJpTjphS1DfYcRt6SGMSnW8Ac": 895376, // South Dakota "ChIJA8-XniNLYYgRVpGBpcEgPgM": 6975218, // Tennessee "ChIJSTKCCzZwQIYRPN4IGI8c6xY": 29527941, // Texas "ChIJzfkTj8drTIcRP0bXbKVK370": 3337975, // Utah "ChIJ_87aSGzctEwRtGtUNnSJTSY": 645570, // Vermont "ChIJzbK8vXDWTIgRlaZGt0lBTsA": 8642274, // Virginia "ChIJ-bDD5__lhVQRuvNfbGh4QpQ": 7738692, // Washington "ChIJRQnL1KVUSogRQzrN3mjHALs": 1782959, // West Virginia "ChIJr-OEkw_0qFIR1kmG-LjV1fI": 5895908, // Wisconsin "ChIJaS7hSDTiXocRLzh90nkisCY": 578803, // Wyoming }; } initMap();
CSS
/* * Always set the map height explicitly to define the size of the div element * that contains the map. */ #map { height: 100%; } /* * Optional: Makes the sample page fill the window. */ html, body { height: 100%; margin: 0; padding: 0; }
HTML
<html>
<head>
<title>Choropleth Map</title>
<link rel="stylesheet" type="text/css" href="./style.css" />
<script type="module" src="./index.js"></script>
</head>
<body>
<div id="map"></div>
<!-- prettier-ignore -->
<script>(g=>{var h,a,k,p="The Google Maps JavaScript API",c="google",l="importLibrary",q="__ib__",m=document,b=window;b=b[c]||(b[c]={});var d=b.maps||(b.maps={}),r=new Set,e=new URLSearchParams,u=()=>h||(h=new Promise(async(f,n)=>{await (a=m.createElement("script"));e.set("libraries",[...r]+"");for(k in g)e.set(k.replace(/[A-Z]/g,t=>"_"+t[0].toLowerCase()),g[k]);e.set("callback",c+".maps."+q);a.src=`https://maps.${c}apis.com/maps/api/js?`+e;d[q]=f;a.onerror=()=>h=n(Error(p+" could not load."));a.nonce=m.querySelector("script[nonce]")?.nonce||"";m.head.append(a)}));d[l]?console.warn(p+" only loads once. Ignoring:",g):d[l]=(f,...n)=>r.add(f)&&u().then(()=>d[l](f,...n))})
({key: "AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGg", v: "weekly"});</script>
</body>
</html>