Centroids layer

The Centroids layer displays all centroids locations registered in the system.

A centroid is the logical representation of a "volume of intensity" for a specific attribute of the data model.

For example, the inhabitants of a specific area or the cars directed to a specific area.

The centroid is a sort of "logical gate" connected to a node of the network and represents the "entry point" towards the node (and also the "return point" from the node) of the "volume" of the considered quantity.

For example, all the inhabitants of a district that in a certain time slot enter the traffic network.

It is not realistic to model and maintain an account of a single inhabitant. You can thus define a centroid that represents all of them (that represents the "volume" of inhabitants).

Caution:  A centroid is not a geometric concept and it has nothing to do with the "barycenter" of the area.

Click a centroid icon to open a pop-up window, listing the attributes of a centroid.

According to the zoom level, a single icon can group two or more "real" centroids.

In this case, before showing the list of attributes, a pop-up window opens allowing you to select the specific centroid from the list associated with the icon.

Tip:  You can get the same result through the operation (→ Showing a selected item).