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2 foot contours acquired as part of the Los Angeles Regional Imagery Acquisition Consortium in 2006. The Digital Surface Model was acquired using LIDAR (Light Detection And Ranging), which used a laser mounted in planes that were acquiring 4-inch orthophotography data. Hundreds of millions of ground measurements were made using this system, which makes it extremely accurate. This source [...] The County of Los Angeles has embarked on projects to replace the data it has historically licensed from Thomas Brothers with data that it owns and maintains internally. This will allow the County to distribute, update, and improve this data without current restrictions. The layer by layer comparison is listed below, and in the guide [...] This dataset represents natural color, leaf-off, 0.33-foot (4-inch) high-resolution, high-accuracy orthorectified aerial imagery, acquired by the Los Angeles Regional Imagery Consortium (LAR-IAC) in winter 2010/2011. This imagery covers the majority of urban/suburban areas of the County in mainland (approximately 2,898 square miles) and Catalina Island covering approximately 75 square miles. The rest of the County, [...] This is a rich set of data available from CalTrans – not limited only to Transportation data: http://www.dot.ca.gov/hq/tsip/gis/datalibrary/gisdatalibrary.html Thought I would share. November 1, 2012 – this data is now public The Countywide building outline dataset contains building outlines (over 3,000,000) for all buildings in Los Angeles County, including building height, building area, and the parcel number (also known as building footprints). This data was captured from stereo imagery as part of the LAR-IAC2 Project (2008 acquisition). [...] Description Adopted Scenic Highways. Credits County of Los Angeles Department of Regional Planning GIS Section. Access and use limitations Every reasonable effort has been made to assure the accuracy of this data. DRP makes no warranty, representation, or guarantee as to the content, sequence, accuracy, timeliness, or completeness of any of the [...] The County of Los Angeles currently uses a licensed street network from Thomas Brothers Map Company. Eventually, the Countywide Address Management System (CAMS) project will use data conflated from other sources. This also includes address points (not just the street network). More information about CAMS can be found by clicking here or entering [...] Freeways in L.A. County represented by single lines, which is ideal for avoiding overlapping labels and freeway shield symbology. Alignment based on aerial photos. Data can be downloaded here: Freeways Statistical Areas 2000 The Statistical Areas dataset contains Statistical Areas from the LA County Department of Regional Planning (DRP). Statistical Areas are communities that can be grouped together to show areas of geographical connection in the county. To do this use the STAT_D field. Similar areas have the same first few [...] 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 [...] A Hillshade is a shaded relief raster from a raster. Simply, when used with maps, it provides a three-dimensional aspect to the map based upon the relief of the underlying area. A more detailed definition of a hillshade can be found here. This hillshade was computed from the 2006 Digital Elevation Model [...] Solar Insolation (global radiation) for the County of Los Angeles developed from information captured in 2006 by the LAR-IAC program. This data was created through the Area Solar Radiation function in ESRI’s ArcGIS Desktop. For more details about this function, view the ESRI help file. That function creates four output files: Global [...] Normalized Difference Vegetation Index (NDVI) for the urban/suburban areas of the County of Los Angeles developed from information captured in 2006 by the LAR-IAC program. The Normalized Difference Vegetation Index (NDVI) is a simple numerical indicator that can be used to analyze remote sensing measurements, typically but not necessarily from a space platform, and [...] Tree Canopy for the urban/suburban areas of the County of Los Angeles developed from information captured in 2006 by the LAR-IAC program. This dataset was updated in October 2011 – see below for details. This dataset was developed by the County of Los Angeles Chief Information Office in support of the LA County Solar [...] This data is 6-inch color orthophotography flown the week of February 15th, 2010 to document the impact of debris flows February 6th, 2010. Coverage Area (with Station Fire Perimeter) On the morning of February 6th, 2010, the community of La Canada Flintridge saw a major debris flow on a number of streets [...] Details May 10, 2013 – added the 2D building outlines Models of County owned buildings in three formats (shape, multipatch, and KML). These buildings were created for the LA County Solar Map and were used for high resolution modeling of solar potential Downtown Area for each building. [...] Land Types [...] Digital Surface Model (DSM) acquired as part of the Los Angeles Regional Imagery Acquisition Consortium in 2006. The DSM contains elevations and includes buildings, vegetation, and roads, as well as natural terrain features, whereas the DEM (Digital Elevation Model) represents bare earth. This dataset is one of a group of elevation related [...]
Digital Elevation Model (DEM) acquired as part of the Los Angeles Regional Imagery Acquisition Consortium in 2006. The DEM represents bare earth, whereas a related product (DSM) contains elevations and includes buildings, vegetation, and roads, as well as natural terrain features, whereas . This dataset is one of a group of [...]
Color Infrared, leaf-off, 0.33-foot (4-inch) high-resolution, high-accuracy orthorectified aerial imagery, acquired by the Los Angeles Regional Imagery Consortium (LAR-IAC) in winter 2005/2006. Infrared is an additional wavelength of information that can be captured by many aerial photography sensors in addition to the general Red/Green/Blue (RGB) channels typical to most imagery. The [...] Coverage Buildings for the urban/suburban areas of the County of Los Angeles developed from information captured in 2006 by the LAR-IAC program. 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 [...] Countywide Coverage Natural color, leaf-off, 1-foot high-resolution, high-accuracy orthorectified aerial imagery, acquired by the Los Angeles Regional Imagery Consortium (LAR-IAC2) in early 2008. This imagery covers the National Forest areas of the County, approximately 1,056 square miles, and is a separate dataset. The urban/suburban areas of the County in mainland (approximately 2,898 [...] Coverage Natural color, leaf-off, 1-foot high-resolution, high-accuracy orthorectified aerial imagery, acquired by the Los Angeles Regional Imagery Consortium (LAR-IAC) in early 2006. This imagery covers the National Forest areas of the County, approximately 1,056 square miles, and is a separate dataset. The urban/suburban areas of the County in mainland (approximately 2,898 square [...] Detail Natural color, leaf-off, 0.33-foot (4-inch) high-resolution, high-accuracy orthorectified aerial imagery, acquired by the Los Angeles Regional Imagery Consortium (LAR-IAC) in early 2006. This imagery covers the majority of urban/suburban areas of the County in mainland (approximately 2,898 square miles) and Santa Catalina Island covering approximately 75 square miles. The rest of [...] Thomas Brothers Cultural Areas [...] Thomas Brothers Pages [...] Thomas Brothers Page and Grid [...] Detail Natural color, leaf-off, 0.33-foot (4-inch) high-resolution, high-accuracy orthorectified aerial imagery, acquired by the Los Angeles Regional Imagery Consortium (LAR-IAC) in winter 2007/2008. This imagery covers the majority of urban/suburban areas of the County in mainland (approximately 2,898 square miles) and Catalina Island covering approximately 75 square miles. The rest of the [...] |
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