Convert GEOJSON to TOPOJSON in C#

Export GEOJSON to TOPOJSON using server side APIs, without needing softwares like ArcGIS, ArcMap, QGIS or Google Earth.

How to Convert GEOJSON to TOPOJSON Using C#

In order to convert GEOJSON to TOPOJSON, we’ll use

Aspose.GIS for .NET

API which is a feature-rich, powerful and easy to use GIS API for C# platform. Open

NuGet

package manager, search for Aspose.GIS and install. You may also use the following command from the Package Manager Console.

Command
PM> Install-Package Aspose.GIS

Steps for converting GEOJSON to TOPOJSON in C#

Conversion can be done with just one line of code while using VectorLayer.Convert method. It takes 4 parameters as detailed below.

A string type file path to the source GEOJSON file
Source driver to let the API know about the input format. Set it to Drivers.GeoJson
The string type file path to the destination TOPOJSON data file
Destination driver to specify output format. Set it to Drivers.TopoJson

System Requirements

Our APIs are supported on all major platforms and Operating Systems. Before executing the code below, please make sure that you have the following prerequisites on your system.

Save GEOJSON as TOPOJSON - C#// Convert GEOJSON GIS data to TOPOJSON data
VectorLayer.Convert(dir + "example.geojson", Drivers.GeoJson, dir + "output.topojson", Drivers.TopoJson);

GEOJSON to TOPOJSON Live Demos

Convert GEOJSON to TOPOJSON right now by visiting our Live Demos website . The live demo has the following benefits

No need to download Aspose GIS API.

Just Select TOPOJSON as output format and.

Upload your GEOJSON file, it will be converted instantly to TOPOJSON.

You will get the download link.

.NET GIS Library

Aspose.GIS for .NET is a GIS data manipulation and conversion API. It fully supports reading, writing and converting famous GIS data formats such as ESRI Shapefiles, GeoJSON, TopoJSON, ESRI Geodatabase, Geography Markup Language, Google Earth, GPS Exchange Format, MapInfo Formats and OpenStreetMap. It is a standalone .NET based API and does not require any GIS based softwares like ArcGIS / ArcMap, QGIS etc.

GEOJSON What is GEOJSON File Format?

GeoJSON is a JSON based format designed to represent the geographical features with their non-spatial attributes. This format defines different JSON (JavaScript Object Notation) objects and their joining fashion. JSON format represents a collective information about the Geographical features, their spatial extents, and properties. An object of this file may indicate a geometry (Point, LineString, Polygon), a feature or collection of features. The features reflect addresses and places as point’s streets, main roads and borders as line strings and countries, provinces, and land regions as polygons. Using the GeoJSON, different mobile routing and navigation applications can indicate the coverage of their services. An extension of GeoJSON is TopoJSON that is smaller in size and encodes geospatial topology. Read More

TOPOJSON What is TOPOJSON File Format?

TopoJSON is an extension of GeoJSON that encodes topology. Rather than representing geometries discretely, geometries in TopoJSON files are stitched together from shared line segments called arcs. Read More

Other Supported Conversions

You can also convert GEOJSON into many other file formats including few listed below.

GEOJSON TO JSON (JavaScript Object Notation)

GEOJSON TO KML (Keyhole Markup Language)

GEOJSON TO SHX (Shapefile File Extension)