Configuring the Network Dataset builder

The Network Dataset builder operates from any network analysis layer containing a performed Route, Closest Facility, Service Area, or Vehicle Routing Problem network analysis. The content of the diagram generated from a same solved network analysis layer can then be different depending on the properties that have been configured on the Network Dataset Builder Properties page.

The steps below focus on the configuration of the Network Dataset Builder Properties page.

The first time the Network Dataset Builder Properties page displays, the Builder Properties dialog box opens as follows:

Network Dataset Builder Property page default state
The Network Dataset Builder Property Page tab is organized into two sections:

  1. Check Initialize links vertices on the Geometry options section if you want the Network Dataset builder to build schematic diagrams in which all the schematic links will display with vertices in the exact same way as those along the associated linear features or network elements.

    When this box is unchecked (default state), schematic links will be drawn as straight lines between the endpoints.


    Some schematic layout algorithms execute from the real orientation of the segments in the diagram—for example, Geo - Partial Overlapping Links, Relative Main Line. If you plan to execute such algorithms on your diagram content, you need to check the Initialize links vertices to get good results.

  2. Check Simplify lines if you know that among the input network features used for your diagram generations, you can have polylines or polygons with a large number of vertices and you want the associated schematic features to be simplified in the generated diagrams. Then, configure how this simplification must be done:
    1. Specify the Maximum allowable offset under which vertices can be eliminated.
    2. Select the offset unit in the drop-down list at the right.
      • The Simplify lines check box is enabled only when Initialize links vertices is checked.
      • The Maximum allowable offset text box and the offset unit drop-down list at its right is enabled only when Simplify lines is checked.

    The Schematics lines simplification applies the same Douglas-Peuker algorithm implemented for the Simplify Line geoprocessing tool when it is configured to work with the Point remove operator. This simplification removes extraneous bends and small intrusions and extrusions on a schematic line without destroying its essential shape. It keeps critical points that depict the essential shape of a schematic line and removes all other points.

    • The Simplify lines option has no impact on the GIS network features in your geodatabase. It only impacts the shape of the schematic lines in your schematic diagrams.
    • If you have relationship or spatial query rules configured on your diagram template and the builder is configured to simplify lines, any new schematic line created by those rules will also be automatically simplified.

    In most cases, since polyline and polygon features are often simplified when building the GIS network data, there are no reasons to configure the simplification of the associated schematic lines during the generation/update of your diagrams. Configuring the simplification of the schematic lines is only recommended when you have a very large number of vertices along the network line features you want to use as input for your diagram generation—for example, if you have more than 300 vertices along some of those network lines. In that case, nothing will prevent you from generating diagrams by keeping a large number of vertices on the associated schematic lines, but you will have some slowing during the diagram generation/update, when applying schematic layout algorithms, and so on, that can be avoided with line simplification.

  3. Check Automatic schematic feature class creation on the Miscellaneous section if you want schematic feature classes related to the feature layers that compose the ArcGIS Network Analyst extension solved layer from which the Network Dataset builder operates to be automatically created when they are missing.

    When this check box is unchecked, no new schematic feature class is created when the Network Dataset builder operates. This means that if, for the schematic diagram template, there is no schematic feature class associated with a particular feature layer that composes the ArcGIS Network Analyst extension solved layer on which the diagram generation is based, no schematic features will be included in the generated diagram for the network elements in that particular feature layer.


    Since network analysis layers work with a large set of network locations—stops, facilities, incidents, orders, and so on—it is recommended that you keep this box checked (default state) to prevent the generation of diagrams with partial content.

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