Book Image

Learning ArcGIS Runtime SDK for .NET

By : Ron Vincent
Book Image

Learning ArcGIS Runtime SDK for .NET

By: Ron Vincent

Overview of this book

ArcGIS is a geographic information system (GIS) that enables you to work with maps and geographic information. It can be used to create and utilize maps, compile geographic data, analyze mapped information, share and discover geographic information and manage geographic information in a database. This book starts by showing you where ArcGIS Runtime fits within Esri’s overall platform strategy. You'll create an initial map using the SDK, then use it to get an understanding of the MVVM model. You'll find out about the different kinds of layers and start adding layers, and you'll learn to transform maps into a 3D scene. The next chapters will help you comprehend and extract information contained in the maps using co-ordinates and layer objects. Towards the end, you will learn to set the symbology, decide whether to use 2D or 3D, see how to implement 2D or 3D, and learn to search and find objects. You'll also get to grips with many other standard features of the Application Programming Interface (API), including create applications and finally testing, licensing, and deploying them. Once completed, you will be able to meet most of the common requirements of any mapping application for desktop or mobile platforms.
Table of Contents (19 chapters)
Learning ArcGIS Runtime SDK for .NET
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
3
Maps and Layers
12
Configuring, Licensing, and Deploying
Index

Units


Mastering units is vital for working with geographic data. Your users will enter data in one unit without realizing that the map is based on another unit. For example, many users in the U.S. expect to enter units in the U.S. feet, but the map may be in meters. The following diagram shows the object model diagram of the different kinds of unit you can convert. An abstract class named Unit provides the basis for instantiable classes named LinearUnit, AreaUnit, and AngularUnit:

The Unit class has one method of interest, called Create, which allows you to create a unit using an ID that is a property of Unit. The Unit class also has the Name and UnitType methods. The good news is that you don't have to know these IDs or names. You can just use an ID like this:

AreaUnit squareYards = (AreaUnit)AreaUnit.Create(AreaUnits.SquareYards.Id);

In this case, the ID is 109442 and the name is SquareYards. For example, to convert from square yards to square meters, you would simply call this line of code...