Map Rendering to Image SVG, PNG, JPG using GIS C# Library

Map Rendering Overview

With Aspose.GIS for .NET C# API you can render a map from a Shapefile, FileGDB, GeoJSON, KML or other supported file formats to SVG, PNG, JPEG, or BMP.

Here is C# code illustrating how to render a map from a shapefile to SVG using default settings:

Here’s the result:

map rendering

Let’s take a closer look at the code.

First, we instantiate a Map object. It represents a collection of layers from various sources that can be rendered. A Map has a size it’s intended to be displayed at. Here we set the map to be 800 pixels wide and 400 pixels tall.

Notice that the Map is enclosed into the using statement. This is necessary because the map keeps track of all resources added to it, and disposes them when we’re done with rendering and Map object is disposed.

Next, we add a layer from a file to the map. Each layer is rendered on top of the previous layer, in the order in which they were added to the map. See more details about how to open vector layers here.

Finally, we call Map.Render to render the map into a file. We specify a path to where to save the result file and a renderer to use. Class Renderers contains references to all renderers included with Aspose.GIS. For example, you can specify Renderers.Png instead of Renderers.Svg in the example above to render the map into a PNG file