![]() ![]() This image shows the result of building extraction after preprocessing of building footprints. This image shows the result of building extraction before preprocessing of building footprints. Building footprints can be split with another feature class or by differences in elevation. To accurately represent these buildings, they need be split into their separate parts. Some building footprints may contain several roof types and roof parts. Run the Preprocess building footprints task to prepare the building footprints for a realistic 3D visualization. Preprocess building footprints (optional) It is not required if you have an accurate footprint feature class. Run the Extract building footprints task to optionally extract building footprints from lidar. To publish your buildings, expand the Publish buildings group task and follow the steps provided. These footprints require splitting, segmentation, and updating of the roof form attributes. Building footprints with one roof type within their boundary (for example, suburban areas) will produce higher-quality roof structures than footprints with multiple roof types (for example, city centers). A lidar point spacing of 3 feet or less is required, 1 foot or less is recommended. The quality of the roof structures is dependent on the quality of the input lidar and building footprint data. High-density lidar (point spacing less than 3 feet) and building footprint segmentation are needed to model complex roof structures. ![]() Procedural rules are then used to create the 3D roof structures. Attributes such as building height, eave height, and the roof form are extracted from the lidar and added to the building footprints. Publish buildingsīuildings with simple roof structures can be generated automatically from the lidar. Reprojection to Web Mercator with height in meters is only required if you want to use the published layers in a global web scene. This task publishes the ground elevation layer to your organization. The ground elevation layer can also be used to improve the ground in your scene. These surfaces are used to create buildings and vegetation layers. This task extracts three elevation surfaces from the LAS dataset: a ground elevation (dtm), a surface elevation (dsm), and a normalized surface elevation (ndsm). Extract elevation surfaces from LAS dataset To publish your ground elevation surface, click the Publish ground elevation surface task and follow the steps provided. The ground elevation layer can be used to enhance the existing elevation in your 3D scene. These layers are used to create buildings and vegetation layers. In the Catalog pane, expand the Tasks folder, and double-click the How to use 3D Basemaps task and go through the various subtasks.ĭetailed elevation layers can be automatically generated from the input lidar data. ![]() The following set of tasks will help you learn how to use 3D Basemaps. Publish data for your 3D BasemapsĪfter you have reviewed the Get to know 3D Basemaps section, you can begin using the solution with your data. Follow the steps in this task to learn how to use the 3D Basemaps solution. ![]() The 3D Basemaps project includes a task workflow that provides a structured sequence using tasks and steps. Using the sample data the first time will help you learn how to use the tasks and how to organize your data. Click the sample data hyperlink to download sample data for Naperville and Philadelphia. Click to expand the Getting to know 3D Basemaps task group and double-click the Download sample data task. Sample data is provided to help you learn how to use the 3D Basemaps solution. This first task will guide you through the data requirements and help you learn how you can utilize your 3D basemap in other workflows and applications. Your 3D basemap can be created at different levels of detail (LOD) depending on the quality of the input lidar data. The 3D Basemaps solution uses existing data within the organization such as lidar, building footprints, power lines, and underground pipe features. In the Catalog pane, expand the Tasks folder, and double-click the Getting to know 3D Basemaps task and go through the various subtasks.On the View tab, in the Windows group, click Catalog, and click Catalog Pane.Start the ArcGIS Pro application and open the 3D Basemaps project. ![]()
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