Height data for the urban/suburban areas of the County of Los Angeles developed from information captured in 2006 by the LAR-IAC program.
This height data was developed from the following two data sources:
- The Digital Elevation Model (DEM) which modeled the ground surface at 5-foot intervals. Click here for more information
- The Digital Surface Model (DSM) which modeled the surface at 5-foot intervals, which included all features like trees and buildings. Click here for more information
This was a very simple calculation - simply the DSM minus the DEM
This dataset was developed by the County of Los Angeles Chief Information Office in support of the LA County Solar Map Application (http://solarmap.lacounty.gov). A solar model based upon the high-resolution digital aerial elevation data included the tops of trees, the ground, and other features that would skew any solar results. For example – the top of a tree appeared to the solar model to be a prime candidate for solar photovoltaic installation due to the amount of sunlight it received, but this was obviously incorrect, and some way needed to be found to focus exclusively on building tops for the purpose of the site.
Layer Files – for internal County use only