Filters: Tags: Basemaps (X)
3 results (7ms)
Filters
Date Range
Extensions Types Contacts Categories Tag Types |
Planimetric positional data represents a structuring of digitally scanned National Topographic Series mapsheet layers. Elevation data was created thorugh interpolation and extrapolation from the scanned contour layer. DATA SOURCE SIZE : 84 sheets GEO COVERAGE : Full coverage of province. Base information originates from digital scanning and vectorizing of federal 1:250,000 NTS lithographic layers of published mapsheets. DEM was created through a process of interpolation/extrapolation from original contours and the manual introduction of elevation points from hardcopy. Water and wetland closed polygonal features were created at a later date. Index Grid for NTS 1:250,000 scale maps.
A bare earth Digital Elevation Model (DEM) created from 2013 LiDAR LAS files for Wilson and Karnes counties in Texas. LiDAR data collection was funded by the Texas Water Development Board. LiDAR LAS files were acquired from Texas Natural Resources Information System (TNRIS). The DEM is a dataset that depicts the topography of the bare earth surface (i.e. surface minus vegetation, buildings, powerlines, etc). This dataset was developled to be used in conjunction with the DSM to create a vegetation height surface (nDSM). The LAS point cloud was filtered to ground points only and the mean z value was calculated. A Digital Surface Model (DSM) created from 2013 LiDAR LAS files for Wilson and Karnes counties in Texas....
Categories: Data;
Types: ArcGIS REST Map Service,
ArcGIS Service Definition,
Downloadable,
Map Service;
Tags: Basemaps,
Cover,
Earth,
elevation,
imagery
A bare earth Digital Elevation Model (DEM) created from 2011 LiDAR LAS files for Austin and Colorado counties in Texas. LiDAR data collection was funded by the Texas Water Development Board. LiDAR LAS files were acquired from Texas Natural Resources Information System (TNRIS). The DEM is a dataset that depicts the topography of the bare earth surface (i.e. surface minus vegetation, buildings, powerlines, etc). This dataset was developled to be used in conjunction with the DSM to create a vegetation height surface (nDSM). The LAS point cloud was filtered to ground points only and the mean z value was calculated. A Digital Surface Model (DSM) created from 2011 LiDAR LAS files for Austin and Colorado counties in Texas....
Categories: Data;
Types: ArcGIS REST Map Service,
ArcGIS Service Definition,
Downloadable,
Map Service;
Tags: Basemaps,
Cover,
Earth,
elevation,
imagery
|
|