googlemaps-samples · willum070 · Feb 6, 2026 · Feb 6, 2026
diff --git a/dist/index.html b/dist/index.html
@@ -60,6 +60,7 @@ <h1>Maps JSAPI Samples</h1>
   <li><a href='/samples/control-simple/dist'>control-simple</a></li>
   <li><a href='/samples/dds-datasets-point/dist'>dds-datasets-point</a></li>
   <li><a href='/samples/dds-datasets-polygon/dist'>dds-datasets-polygon</a></li>
+  <li><a href='/samples/dds-datasets-polygon-colors/dist'>dds-datasets-polygon-colors</a></li>
   <li><a href='/samples/dds-datasets-polyline/dist'>dds-datasets-polyline</a></li>
   <li><a href='/samples/dds-region-viewer/dist'>dds-region-viewer</a></li>
   <li><a href='/samples/deckgl-heatmap/dist'>deckgl-heatmap</a></li>

diff --git a/dist/samples/dds-datasets-polygon-colors/app/.eslintsrc.json b/dist/samples/dds-datasets-polygon-colors/app/.eslintsrc.json
@@ -0,0 +1,13 @@
+{
+  "extends": [
+    "plugin:@typescript-eslint/recommended"
+  ],
+  "parser": "@typescript-eslint/parser",
+  "rules": {
+    "@typescript-eslint/ban-ts-comment": 0,
+    "@typescript-eslint/no-this-alias": 1,
+    "@typescript-eslint/no-empty-function": 1,
+    "@typescript-eslint/explicit-module-boundary-types": 1,
+    "@typescript-eslint/no-unused-vars": 1
+  }
+}
diff --git a/dist/samples/dds-datasets-polygon-colors/app/README.md b/dist/samples/dds-datasets-polygon-colors/app/README.md
@@ -0,0 +1,41 @@
+# Google Maps JavaScript Sample
+
+## dds-datasets-polygon-colors
+
+This example shows an approach to styling polygon geometry based data features.
+
+## Setup
+
+### Before starting run:
+
+`npm i`
+
+### Run an example on a local web server
+
+`cd samples/dds-datasets-polygon-colors`
+`npm start`
+
+### Build an individual example
+
+`cd samples/dds-datasets-polygon-colors`
+`npm run build`
+
+From 'samples':
+
+`npm run build --workspace=dds-datasets-polygon-colors/`
+
+### Build all of the examples.
+
+From 'samples':
+
+`npm run build-all`
+
+### Run lint to check for problems
+
+`cd samples/dds-datasets-polygon-colors`
+`npx eslint index.ts` 
+
+## Feedback
+
+For feedback related to this sample, please open a new issue on
+[GitHub](https://github.com/googlemaps-samples/js-api-samples/issues).
diff --git a/dist/samples/dds-datasets-polygon-colors/app/index.html b/dist/samples/dds-datasets-polygon-colors/app/index.html
@@ -0,0 +1,24 @@
+<!doctype html>
+<!--
+ @license
+ Copyright 2026 Google LLC. All Rights Reserved.
+ SPDX-License-Identifier: Apache-2.0
+-->
+<!-- [START maps_dds_datasets_polygon_colors] -->
+<html>
+  <head>
+    <title>Style a polygon data feature with more detail</title>
+
+    <link rel="stylesheet" type="text/css" href="./style.css" />
+    <script type="module" src="./index.js"></script>
+    <!-- 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: "AIzaSyA6myHzS10YXdcazAFalmXvDkrYCp5cLc8", v: "weekly"});</script>
+  </head>
+  <body>
+        <gmp-map center="40.580732, -74.152826" zoom="14" map-id="5cd2c9ca1cf05670">
+            <div id="attribution" slot="control-block-end-inline-start">Data source: NYC Open Data</div>
+        </gmp-map>
+  </body>
+</html>
+<!-- [END maps_dds_datasets_polygon_colors] -->
diff --git a/dist/samples/dds-datasets-polygon-colors/app/index.ts b/dist/samples/dds-datasets-polygon-colors/app/index.ts
@@ -0,0 +1,62 @@
+/**
+ * @license
+ * Copyright 2026 Google LLC. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+// [START maps_dds_datasets_polygon_colors]
+const mapElement = document.querySelector('gmp-map') as google.maps.MapElement;
+let innerMap;
+// [START maps_dds_datasets_polygon_colors_style_function]
+function setStyle(/* FeatureStyleFunctionOptions */ params) {
+    const datasetFeature = params.feature;
+    // 'typecategory' is an attribute in this Dataset.
+    const typeCategory = datasetFeature.datasetAttributes['typecategory'];
+
+    switch (typeCategory) {
+        case 'Undeveloped': // Color undeveloped areas blue.
+            return /* FeatureStyleOptions */ {
+                strokeColor: 'blue',
+                strokeWeight: 2,
+                strokeOpacity: 1,
+                fillColor: 'blue',
+                fillOpacity: 0.3,
+            };
+            break;
+        case 'Parkway': // Color historical house sites red.
+            return /* FeatureStyleOptions */ {
+                strokeColor: 'red',
+                strokeWeight: 2,
+                strokeOpacity: 1,
+                fillColor: 'red',
+                fillOpacity: 0.5,
+            };
+            break;
+        default: // Color other type categories green.
+            return /* FeatureStyleOptions */ {
+                strokeColor: 'green',
+                strokeWeight: 2,
+                strokeOpacity: 1,
+                fillColor: 'green',
+                fillOpacity: 0.3,
+            };
+            break;
+    }
+}
+// [END maps_dds_datasets_polygon_colors_style_function]
+
+async function initMap() {
+    // Request needed libraries.
+    await google.maps.importLibrary("maps") as google.maps.MapsLibrary;
+
+    // Get the inner map.
+    innerMap = mapElement.innerMap;
+
+    // Dataset ID for NYC park data.
+    const datasetId = 'a75dd002-ad20-4fe6-af60-27cd2ed636b4';
+    const datasetLayer = innerMap.getDatasetFeatureLayer(datasetId);
+    datasetLayer.style = setStyle;
+}
+
+initMap();
+// [END maps_dds_datasets_polygon_colors]
diff --git a/dist/samples/dds-datasets-polygon-colors/app/package.json b/dist/samples/dds-datasets-polygon-colors/app/package.json
@@ -0,0 +1,14 @@
+{
+  "name": "@js-api-samples/dds-datasets-polygon-colors",
+  "version": "1.0.0",
+  "scripts": {
+    "build": "tsc && bash ../jsfiddle.sh dds-datasets-polygon-colors && bash ../app.sh dds-datasets-polygon-colors && bash ../docs.sh dds-datasets-polygon-colors && npm run build:vite --workspace=. && bash ../dist.sh dds-datasets-polygon-colors",
+    "test": "tsc && npm run build:vite --workspace=.",
+    "start": "tsc && vite build --base './' && vite",
+    "build:vite": "vite build --base './'",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+
+  }
+}
diff --git a/dist/samples/dds-datasets-polygon-colors/app/style.css b/dist/samples/dds-datasets-polygon-colors/app/style.css
@@ -0,0 +1,26 @@
+/**
+ * @license
+ * Copyright 2026 Google LLC. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+/* [START maps_dds_datasets_polygon_colors] */
+
+/* 
+ * Optional: Makes the sample page fill the window. 
+ */
+html,
+body {
+  height: 100%;
+  margin: 0;
+  padding: 0;
+}
+
+#attribution {
+ background-color: rgba(255, 255, 255, 0.7);
+ font-family: "Roboto", "Arial", "sans-serif";
+ font-size: 10px;
+ padding: 2px;
+ margin: 2px;
+}
+
+/* [END maps_dds_datasets_polygon_colors] */
diff --git a/dist/samples/dds-datasets-polygon-colors/app/tsconfig.json b/dist/samples/dds-datasets-polygon-colors/app/tsconfig.json
@@ -0,0 +1,17 @@
+{
+  "compilerOptions": {
+    "module": "esnext",
+    "target": "esnext",
+    "strict": true,
+    "noImplicitAny": false,
+    "lib": [
+      "es2015",
+      "esnext",
+      "es6",
+      "dom",
+      "dom.iterable"
+    ],
+    "moduleResolution": "Node",
+    "jsx": "preserve"
+  }
+}
diff --git a/dist/samples/dds-datasets-polygon-colors/dist/assets/index-BqXZ8XbW.js b/dist/samples/dds-datasets-polygon-colors/dist/assets/index-BqXZ8XbW.js
diff --git a/dist/samples/dds-datasets-polygon-colors/dist/assets/index-DBFNArx3.css b/dist/samples/dds-datasets-polygon-colors/dist/assets/index-DBFNArx3.css
@@ -0,0 +1 @@
+html,body{height:100%;margin:0;padding:0}#attribution{background-color:#ffffffb3;font-family:Roboto,Arial,"sans-serif";font-size:10px;padding:2px;margin:2px}
diff --git a/dist/samples/dds-datasets-polygon-colors/dist/index.html b/dist/samples/dds-datasets-polygon-colors/dist/index.html
@@ -0,0 +1,24 @@
+<!doctype html>
+<!--
+ @license
+ Copyright 2026 Google LLC. All Rights Reserved.
+ SPDX-License-Identifier: Apache-2.0
+-->
+<!-- [START maps_dds_datasets_polygon_colors] -->
+<html>
+  <head>
+    <title>Style a polygon data feature with more detail</title>
+
+    <!-- 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: "AIzaSyA6myHzS10YXdcazAFalmXvDkrYCp5cLc8", v: "weekly"});</script>
+    <script type="module" crossorigin src="./assets/index-BqXZ8XbW.js"></script>
+    <link rel="stylesheet" crossorigin href="./assets/index-DBFNArx3.css">
+  </head>
+  <body>
+        <gmp-map center="40.580732, -74.152826" zoom="14" map-id="5cd2c9ca1cf05670">
+            <div id="attribution" slot="control-block-end-inline-start">Data source: NYC Open Data</div>
+        </gmp-map>
+  </body>
+</html>
+<!-- [END maps_dds_datasets_polygon_colors] -->
diff --git a/dist/samples/dds-datasets-polygon-colors/docs/index.html b/dist/samples/dds-datasets-polygon-colors/docs/index.html
@@ -0,0 +1,24 @@
+<!doctype html>
+<!--
+ @license
+ Copyright 2026 Google LLC. All Rights Reserved.
+ SPDX-License-Identifier: Apache-2.0
+-->
+<!-- [START maps_dds_datasets_polygon_colors] -->
+<html>
+  <head>
+    <title>Style a polygon data feature with more detail</title>
+
+    <link rel="stylesheet" type="text/css" href="./style.css" />
+    <script type="module" src="./index.js"></script>
+    <!-- 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: "AIzaSyA6myHzS10YXdcazAFalmXvDkrYCp5cLc8", v: "weekly"});</script>
+  </head>
+  <body>
+        <gmp-map center="40.580732, -74.152826" zoom="14" map-id="5cd2c9ca1cf05670">
+            <div id="attribution" slot="control-block-end-inline-start">Data source: NYC Open Data</div>
+        </gmp-map>
+  </body>
+</html>
+<!-- [END maps_dds_datasets_polygon_colors] -->
diff --git a/dist/samples/dds-datasets-polygon-colors/docs/index.js b/dist/samples/dds-datasets-polygon-colors/docs/index.js
@@ -0,0 +1,57 @@
+"use strict";
+/**
+ * @license
+ * Copyright 2026 Google LLC. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+// [START maps_dds_datasets_polygon_colors]
+const mapElement = document.querySelector('gmp-map');
+let innerMap;
+// [START maps_dds_datasets_polygon_colors_style_function]
+function setStyle(/* FeatureStyleFunctionOptions */ params) {
+    const datasetFeature = params.feature;
+    // 'typecategory' is an attribute in this Dataset.
+    const typeCategory = datasetFeature.datasetAttributes['typecategory'];
+    switch (typeCategory) {
+        case 'Undeveloped': // Color undeveloped areas blue.
+            return /* FeatureStyleOptions */ {
+                strokeColor: 'blue',
+                strokeWeight: 2,
+                strokeOpacity: 1,
+                fillColor: 'blue',
+                fillOpacity: 0.3,
+            };
+            break;
+        case 'Parkway': // Color historical house sites red.
+            return /* FeatureStyleOptions */ {
+                strokeColor: 'red',
+                strokeWeight: 2,
+                strokeOpacity: 1,
+                fillColor: 'red',
+                fillOpacity: 0.5,
+            };
+            break;
+        default: // Color other type categories green.
+            return /* FeatureStyleOptions */ {
+                strokeColor: 'green',
+                strokeWeight: 2,
+                strokeOpacity: 1,
+                fillColor: 'green',
+                fillOpacity: 0.3,
+            };
+            break;
+    }
+}
+// [END maps_dds_datasets_polygon_colors_style_function]
+async function initMap() {
+    // Request needed libraries.
+    await google.maps.importLibrary("maps");
+    // Get the inner map.
+    innerMap = mapElement.innerMap;
+    // Dataset ID for NYC park data.
+    const datasetId = 'a75dd002-ad20-4fe6-af60-27cd2ed636b4';
+    const datasetLayer = innerMap.getDatasetFeatureLayer(datasetId);
+    datasetLayer.style = setStyle;
+}
+initMap();
+// [END maps_dds_datasets_polygon_colors]
diff --git a/dist/samples/dds-datasets-polygon-colors/docs/index.ts b/dist/samples/dds-datasets-polygon-colors/docs/index.ts
@@ -0,0 +1,62 @@
+/**
+ * @license
+ * Copyright 2026 Google LLC. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+// [START maps_dds_datasets_polygon_colors]
+const mapElement = document.querySelector('gmp-map') as google.maps.MapElement;
+let innerMap;
+// [START maps_dds_datasets_polygon_colors_style_function]
+function setStyle(/* FeatureStyleFunctionOptions */ params) {
+    const datasetFeature = params.feature;
+    // 'typecategory' is an attribute in this Dataset.
+    const typeCategory = datasetFeature.datasetAttributes['typecategory'];
+
+    switch (typeCategory) {
+        case 'Undeveloped': // Color undeveloped areas blue.
+            return /* FeatureStyleOptions */ {
+                strokeColor: 'blue',
+                strokeWeight: 2,
+                strokeOpacity: 1,
+                fillColor: 'blue',
+                fillOpacity: 0.3,
+            };
+            break;
+        case 'Parkway': // Color historical house sites red.
+            return /* FeatureStyleOptions */ {
+                strokeColor: 'red',
+                strokeWeight: 2,
+                strokeOpacity: 1,
+                fillColor: 'red',
+                fillOpacity: 0.5,
+            };
+            break;
+        default: // Color other type categories green.
+            return /* FeatureStyleOptions */ {
+                strokeColor: 'green',
+                strokeWeight: 2,
+                strokeOpacity: 1,
+                fillColor: 'green',
+                fillOpacity: 0.3,
+            };
+            break;
+    }
+}
+// [END maps_dds_datasets_polygon_colors_style_function]
+
+async function initMap() {
+    // Request needed libraries.
+    await google.maps.importLibrary("maps") as google.maps.MapsLibrary;
+
+    // Get the inner map.
+    innerMap = mapElement.innerMap;
+
+    // Dataset ID for NYC park data.
+    const datasetId = 'a75dd002-ad20-4fe6-af60-27cd2ed636b4';
+    const datasetLayer = innerMap.getDatasetFeatureLayer(datasetId);
+    datasetLayer.style = setStyle;
+}
+
+initMap();
+// [END maps_dds_datasets_polygon_colors]
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		html,body{height:100%;margin:0;padding:0}#attribution{background-color:#ffffffb3;font-family:Roboto,Arial,"sans-serif";font-size:10px;padding:2px;margin:2px}