Gis Data Manipulation APIs for NET

Aspose.Gis library for NET

Aspose.Gis for NET enables you to access & manipulate geographic information from vector-based geospatial data formats. API supports to read, write & convert most popular Gis file formats such as Shapefile, GeoJSON, FIleGDB, KML & OSM XML as well as render a map from supported formats to SVG. Furthermore, a developer can easily customize rendering and feature styles to get the desired map look.

Aspose.Gis for NET is designed with simplicity, performance, usability & portability in mind. It contains APIs to be used with NET Framework, NET Core & Xamarin platforms, enabling you to build cross-platform applications with great ease.

Use Different Coordinate Systems

With Aspose.Gis, you can transform geospatial coordinates, geometries, and whole layers from one coordinate reference system to another. Cartographic projections as well as geodetic transformations are supported.

You can either look up a coordinate reference system by SRID, import from WKT or set custom parameters directly in the code.

Perform Spatial Analysis

Aspose.Gis includes a full set of spatial predicates based on the DE-9IM model that evaluates topological relationships between objects. Typical cases are:

Determine if two objects overlap
Determine if one object intersects another object
Find minimum distance between geometry and another geometry
Check if the geometry of an object intersects itself
Compute the area of a geometry

Aspose.Gis enables you to easily perform geometric operations, such as:

Create a buffer polygon around a geometry
Find the centroid of a geometry
Find the convex hull of a geometry
Compute bounding extent
Linearize a curve

Code samples

                
                    
// Read GIS data from a Shapefile
using (var layer = VectorLayer.Open(dir + "myDataFile.shp", Drivers.Shapefile))
{

    foreach (var feature in layer)
    {
        Console.WriteLine(feature.Geometry.AsText()); // print the geometry as WKT

        Console.WriteLine(feature.GetValue<string>("CITY_NAME")); // print an attribute value

        Console.WriteLine(feature.GetValue<DateTime>("UPDATE_DAT")); 
    }
}


// Convert a Shapefile to GeoJSON
VectorLayer.Convert(dir + "example.shp", Drivers.Shapefile, dir + "output.json", Drivers.GeoJson);


// Render a TopoJSON map to SVG
using (var map = new Map(800, 600))
{
    var layer = VectorLayer.Open(dir + "map.json", Drivers.TopoJson);

    var style = new SimpleFill { FillColor = Color.Azure, StrokeWidth = 1.5 };

    map.Add(layer, style);

    map.Render(dir + "mymap.svg", Renderers.Svg);
}

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C# Gis library

There are a simple way to install Aspose.Gis for NET onto your system:

Install a NuGet Package. See Documentation

Aspose.Gis Live Demos on C#

View Aspose.Gis examples right now by visiting our Live Demos website. The live demo has the following benefits

Create new layers and datasets or read features from existing files

Create points, lines, and surfaces

Build non-linear geometries

Translate geometries to/from WKT and WKB

Compute topological relation between geometries

Compute an intersection, union or difference of any geometries

Compute a buffer region around a geometry

Render maps to SVG, PNG, JPEG, or BMP

Combine several symbolizers to perform complex drawing

Calculate styling parameters of a feature basing on values of its attributes

Reproject individual geometries and entire layers

Import spatial reference systems from WKT, export spatial reference systems to WKT

Look up spatial reference systems by SRID

Convert data to a lot of supported formats

Perform reprojection while converting data

Work with spatial data in PostgreSQL and SQL Server

Build spatial indexes to speed up spatial queries

Read band values from GeoTIFF raster format

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.

You can also look at the various features of our Gis library.

Aspose.GIS Conversion

Aspose.GIS Coordinates

Aspose.GIS Viewer

22.17.1
(Release notes)