20191218 13343400 1.0 FALSE MARIN_2019_CHM_3FT file://\\TGS8\H$\LIDAR_PROCESSING\MARIN_2019\MARIN_2019_CHM_3FT.gdb Local Area Network 002 5829600.000000 6012300.000000 2121000.000000 2316300.000000 1 Projected GCS_North_American_1983 Linear Unit: Foot_US (0.304801) NAD_1983_2011_StatePlane_California_III_FIPS_0403_Ft_US <ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/2.4.0'><WKT>PROJCS["NAD_1983_2011_StatePlane_California_III_FIPS_0403_Ft_US",GEOGCS["GCS_North_American_1983",DATUM["D_EGM2008_geoid",SPHEROID["Unknown",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["false_easting",6561666.666666668],PARAMETER["false_northing",1640416.666666667],PARAMETER["central_meridian",-120.5],PARAMETER["standard_parallel_1",37.06666666666667],PARAMETER["standard_parallel_2",38.43333333333333],PARAMETER["latitude_of_origin",36.5],UNIT["Foot_US",0.3048006096012192]]</WKT><XOrigin>-115860600</XOrigin><YOrigin>-93269500</YOrigin><XYScale>36787427.345686711</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>0.0032808333333333331</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision></ProjectedCoordinateSystem> 32 FALSE LZW 1 TIFF FALSE continuous floating point -3.4028231e+38 BuildPyramids H:\LIDAR_PROCESSING\MARIN_2019\MARIN_2019_CHM_3FT.tif -1 NONE Nearest DEFAULT 75 OVERWRITE CalculateStatistics H:\LIDAR_PROCESSING\MARIN_2019\MARIN_2019_CHM_3FT.tif 1 1 # OVERWRITE "Feature Set" CopyRaster H:\LIDAR_PROCESSING\MARIN_2019\MARIN_2019_CHM_3FT.tif H:\LIDAR_PROCESSING\MARIN_2019\MARIN_2019_CHM_3FT.gdb\MARIN_2019_CHM_3FT # # -9999 NONE NONE # NONE NONE "Esri Grid" NONE CURRENT_SLICE NO_TRANSPOSE 20191220 11562600 20191220 11573300 150000000 5000 Microsoft Windows 10 Version 10.0 (Build 17763) ; Esri ArcGIS 12.4.2.19948 MARIN_2019_CHM_3FT 1 -123.052258 -122.401669 38.340765 37.792665 This 3-foot resolution canopy height model (CHM) depicts Marin County’s woody canopy as a Digital Elevation Model. Pixel values of the countywide raster are. <DIV STYLE="text-align:Left;"><DIV><DIV>Methods: This LiDAR derivative provides information about vegetation height. The 3-foot resolution raster was produced from the winter, 2019 Quality Level 1 LiDAR point cloud (already ground classified) using Lastools in a multistep process. The processing steps were as follows:<UL><LI>Create Tiles (lastile)</LI><LI>Height Normalize the Point Cloud (lasheight)</LI><LI>Classify Buildings (lasclassify)</LI><LI>Clamp Building to 0 Ft. Normalized Height (las2las)</LI><LI>Thin the Point Cloud (lasthin)</LI><LI>Convert the Point Cloud to a DEM (las2dem) </LI></UL>Uses and Limitations:The canopy height model provides a raster depiction of the highest vegetation returns for each 3x3 foot raster cell across Marin County. The layer is useful for myriad vegetation and forest-related analysis and is an important input to the automated processes used to develop the Marin County fine scale vegetation map. However, this data product was produced based on a rapid, fully automated point cloud classification and was not manually edited. As such, it includes some ‘false positives’ – pixels with a canopy height in the raster that aren’t vegetation. These false positives include noise from water aboveground non-vegetation returns from bridge decks, powerlines, and edges of buildings.</DIV></DIV></DIV> Golden Gate National Parks Conservancy, Tukman Geospatial LLC Canopy Height Model LiDAR Marin File Geodatabase Raster Dataset dataset 2 1 0 5829600.000000 2121000.000000 5829600.000000 2316300.000000 6012300.000000 2316300.000000 6012300.000000 2121000.000000 5920950.000000 2218650.000000 60900 3.000000 65100 3.000000 Band_1 32 20191220 Pixel 65100 60900 3.000000 3.000000 32 1 Upper Left FALSE LZ77 1 pixel codes FGDBR TRUE row and column 3.000000 3.000000 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