The concept of Layers is essential when working with geographic information and for its cartographic visualization (using Maps).
For example, to create Native applications of Uber or Easy Taxi style, there is a set of properties associated with the Grid control, whose Control Type property = Maps (included in a Panel object).
The values configured for these properties will be presented as Layers, allowing you to change the map’s behavior.
The Layers are as follows:
- Selection Layer: Allows you to change the navigation mode to select a location.
- Directions Layer: Allows the map information to be displayed as routes between points.
- Animations Layer: Allows you to draw animations between points on the map.
- Geometry Layer: Allows you to show sets of Geography data grouped in a logical way (for example, if they are streets or avenues, etc.) with the same style (color, width, etc.).
The links above provide descriptions of the Layers, scenarios of use, the possibilities they offer, and the properties that allow you to achieve these objectives.
Another example of using layers is when you need to display different vector data layers, which are added or removed from a map. For example, to view on a Map the main avenues of a city, its administrative distribution, or certain points of interest, such as bus stops or hospitals, etc. To do so, the geometries that represent that data (GeoLines, GeoPolygons, or GeoPoints) must be stored. Also, it is possible to turn the data layer on or off using the Geometry Layer functionality.
In HowTo: Group and Visualize Geographic Data Logically there are more detailed descriptions about this Layer, use scenarios, the possibilities they offer, and the properties that allow you to achieve these objectives.
Controls: Grid (Control Type: Maps)
Generators:
Android, Apple