Le portail francophone de la géomatique

A quoi çà sert alors de nous faire miroiter des barres d'outils alors qu'on ne peut s'en servir...?

List of layers that you are currently editing that can participate in a map topology. Annotation and dimension feature classes, and feature classes that participate in a geometric network won't be listed. Check the box next to the layers that you want to be in the map topology. Shortcut: hold down CTRL and click on a check box to turn all the layers on or off. If two or more layers represent the same shapefile or feature class, all of these layers will participate in the map topology if any one of them is checked: if you close and then reopen this dialog after checking one of them, you'll see that all of the layers have been checked automatically.

What is map topology?
Map topology lets you temporarily create and edit shared geometry between the features in participating layers. When you have defined a map topology, it is shown in the Topology dropdown in the Topology toolbar as an entry called <Map Layers>. Only one map topology can be defined for an edit session.
You can use the Topology Edit tool  in the Topology toolbar and the Modify Edge and Reshape Edge edit tasks to edit the features in a map topology. Map topology is useful because it enables you to perform topological editing in situations where you can't use geodatabase topology:

-    Map topology can be defined for shapefiles, which can't participate in a geodatabase topology.
-    If you are using an ArcView license, you can't create or edit geodatabase topology but you can define map topology for any data on which you can start an edit session (i.e. shapefiles and simple feature classes in file or personal geodatabases). You can't create map topology on feature classes that participate in a geodatabase topology, because you need an ArcEditor or ArcInfo license to be able to edit them.

-    If you are using an ArcEditor or ArcInfo license you can create a map topology for any shapefile or feature class data, including feature classes that participate in a geodatabase topology. For example, you may want to perform topological editing on two feature classes that participate in two separate geodatabase topologies. In this case, you can define a map topology containing both of these feature classes.

What is the difference between map topology and geodatabase topology?

-    Geodatabase topology is a data object created and stored in a geodatabase. A geodatabase topology defines a set of rules about the relationships between feature classes in a feature dataset. Geodatabase topology is created in ArcCatalog and can be added to ArcMap as a layer, just like any other data. After editing has been performed on the feature classes, you validate the geodatabase topology to see if the edits break any of the topology's rules. Any errors can then be fixed or marked as exceptions. An ArcEditor or ArcInfo license is required to create, edit or validate geodatabase topology. In order to use geodatabase topology when you edit data from a geodatabase, the geodatabase topology in which the data participates must be in your map. If you are using an ArcView license you can open a map containing a geodatabase topology, but you cannot start an edit session on feature classes that participate in a geodatabase topology.

-    Map topology is temporary and only lasts for the duration of your edit session. Unlike geodatabase topologies, map topologies are not stored permanently or represented as layers in the map. Map topologies have no rules and there is no validation process. The tools and commands for validating topology and fixing errors are disabled in the Topology toolbar when you work with a map topology. Tip: in previous versions of ArcGIS, map topology functionality was invoked using the Integrate command.