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.
#Rasters to multipatch series
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. Part of the Modelling Reality in 3D series
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