Saving vector data

In this book, we are concentrating on loading, mapping, and modifying spatial data on the client-side. However, we should be able to send our modified data to our server. Server-side applications are out of the scope of this book, though we cover how to initialize a saving process. Note that this example, called ch04_save, will produce errors as we don't have server-side support for receiving spatial data. Don't worry about that; the client side part works perfectly fine.

Tip

If you would like to see the output of the last two examples, you can send them to the console before or after the AJAX request with console.log.

Saving in arbitrary formats

OpenLayers 3 offers powerful parser objects that are not only capable of reading strings representing vector data, but can also write features back to well-recognized formats. We can easily send a GeoJSON file with the following code:

var geoJSONSerializer = new ol.format.GeoJSON();
var featString = geoJSONSerializer.writeFeatures...