The Area Solar Radiation tool, which we’ll discuss later on, requires a DEM as input and provides results based on a square metre, so we know that this rooftop needs to be represented as a DEM and to make calculations easier later on we will be using 1 metre squared pixels. This model will be calculating the maximum potential that can be harnessed by a rooftop, therefore we need to define what this region is. We will be discussing it on a conceptual level on the blog. The high level workflow and tools used for this exercise are as follows:Ī toolbox can be downloaded HERE in which you can delve further into the parameters set for this demo. This workflow should be perfectly acceptable to use on any other multipatches with a ‘roof’ area with minimal tweaking to the model as long as you keep in mind that this model assumes that skyward facing portions of the multipatch are rooftop areas. In this demo we’ll be using tools that are nestled away in the Spatial Analyst extension and often overlooked in order to determine the production potential of rooftops of multipatch feature classes (Esri’s geometry type for 3D features) for generating electricity harnessing the power of the sun!įor this exercise we’ll be using a multipatch feature class from HERE’s 3D Landmark dataset of the Dome in Northgate, Randburg as its construction lends itself quite nicely to an exercise of this kind. This doesn’t have to be scary though! Through this series of blog posts – Modelling Reality in 3D, we’re going to uncover some simple and practical uses for 3D GIS. Often times there are problems that simply have to be solved in 3 dimensions in order to attain the appropriate results. This workflow is most effective for digitizing new content or iteratively updating existing multipatches and requires an active 3D edit session.Part of the Modelling Reality in 3D series You can also choose an existing multipatch feature and switch out its current geometry with an updated or new 3D model. The 3D editing environment allows you to interactively place a 3D model into the view as a new multipatch feature class stored within the geodatabase. Interactively place or update a feature using a 3D model It is also effective for layers that use repetitive symbols, such as proposed building tracts with a limited number of housing models. This tool is most effective for a small number of 3D models that are not already georeferenced. By symbolizing point features using 3D models, the source files can be converted into correctly placed, rotated, and sized multipatch features. The Layer 3D To Feature Class geoprocessing tool converts a symbolized 3D layer into 3D features. Convert symbolized points into a feature class If the models are not georeferenced-for example, they are in a local origin coordinate system centered on (0,0)-a second step to position the features correctly in geographic space is required after importing them. This tool is most effective for large numbers of 3D models that have been correctly georeferenced. The Import 3D Files geoprocessing tool takes a collection of 3D model files and imports each model into a separate multipatch feature. Import 3D models directly into a feature class The files can be imported directly into a feature class, converted from 3D symbology, or interactively placed and updated inside a 3D edit session.Įach of these options is effective for specific use cases and is described in more detail below. There are several ways to import a three-dimensional (3D) model into a multipatch feature class. What are the benefits of converting 3D models into multipatch features?. Interactively place or update a feature using a 3D model.Convert symbolized points into a feature class.Import 3D models directly into a feature class.
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