This page shows you how to render geographic data in the GeoJSON
format, usingGMUGeoJSONParser, in
conjunction withGMUGeometryRenderer. GeoJSON is a popular
format for rendering geographic data such as points, lines, and polygons.
For the full code sample, see the sample appson
GitHub.
Rendering GeoJSON data
To render GeoJSON data on a map, create aGMUGeoJSONParserwith
the path to a GeoJSON resource (GeoJSON_sample.kmlin this
example). Then, create aGMUGeometryRenderer, passing theGMUKMLParserinstance. Finally, callGMUGeometryRenderer.render(). The following code example shows
rendering GeoJSON data on a map:
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-04 UTC."],[[["\u003cp\u003eThis page demonstrates how to render geographic data in GeoJSON format on Google Maps using the \u003ccode\u003eGMUGeoJSONParser\u003c/code\u003e and \u003ccode\u003eGMUGeometryRenderer\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eGeoJSON is a commonly used format for displaying geographic data like points, lines, and polygons.\u003c/p\u003e\n"],["\u003cp\u003eYou'll need to set up the Maps SDK for iOS Utility Library before using \u003ccode\u003eGMUGeoJSONParser\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe provided code examples show how to render GeoJSON data on a map in both Swift and Objective-C.\u003c/p\u003e\n"]]],["The document explains how to render GeoJSON data on a map using the `GMUGeoJSONParser` and `GMUGeometryRenderer` from the Maps SDK for iOS Utility Library. First, a `GMUGeoJSONParser` is created with the GeoJSON resource path. Then, a `GMUGeometryRenderer` is initialized with the map view and the parser's features. Finally, the `GMUGeometryRenderer.render()` method is called to display the GeoJSON data, such as points, lines, and polygons, on the map.\n"],null,["Select platform: [Android](/maps/documentation/android-sdk/utility/geojson \"View this page for the Android platform docs.\") [iOS](/maps/documentation/ios-sdk/utility/geojson \"View this page for the iOS platform docs.\") [JavaScript](/maps/documentation/javascript/datalayer \"View this page for the JavaScript platform docs.\")\n\nThis page shows you how to render geographic data in the GeoJSON\nformat, using `GMUGeoJSONParser`, in\nconjunction with `GMUGeometryRenderer`. GeoJSON is a popular\nformat for rendering geographic data such as points, lines, and polygons.\n\nPrerequisites and notes\n\n`GMUGeoJSONParser` is part of\nthe [Maps SDK for iOS Utility Library](https://github.com/googlemaps/google-maps-ios-\nutils). If you haven't yet set up\nthe library, follow the [setup guide](/maps/documentation/ios-\nsdk/utility/setup) before reading the rest of this page.\n\nFor the full code sample, see the sample apps\n[on\nGitHub](https://github.com/googlemaps/google-maps-ios-utils).\n\nRendering GeoJSON data\n\nTo render GeoJSON data on a map, create a `GMUGeoJSONParser` with\nthe path to a GeoJSON resource (`GeoJSON_sample.kml` in this\nexample). Then, create a `GMUGeometryRenderer`, passing the\n`GMUKMLParser` instance. Finally, call\n`GMUGeometryRenderer.render()`. The following code example shows\nrendering GeoJSON data on a map: \n\nSwift \n\n```swift\nimport GoogleMapsUtils\n\nclass GeoJSON {\n private var mapView: GMSMapView!\n\n func renderGeoJSON() {\n guard let path = Bundle.main.path(forResource: \"GeoJSON_sample\", ofType: \"json\") else {\n return\n }\n\n let url = URL(fileURLWithPath: path)\n\n let geoJsonParser = GMUGeoJSONParser(url: url)\n geoJsonParser.parse()\n\n let renderer = GMUGeometryRenderer(map: mapView, geometries: geoJsonParser.features)\n renderer.render()\n }\n}\n \n```\n\nObjective-C \n\n```objective-c\n@import GoogleMapsUtils;\n\n@implementation GeoJSON {\n GMSMapView *_mapView;\n}\n\n- (void)renderGeoJSON {\n NSString *path = [[NSBundle mainBundle] pathForResource:@\"GeoJSON_sample\" ofType:@\"json\"];\n NSURL *url = [NSURL fileURLWithPath:path];\n GMUGeoJSONParser *parser = [[GMUGeoJSONParser alloc] initWithURL:url];\n [parser parse];\n GMUGeometryRenderer *renderer = [[GMUGeometryRenderer alloc] initWithMap:_mapView\n geometries:parser.features];\n [renderer render];\n}\n\n@end\n \n```"]]
