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This Digital Terrain Model (DTM) Hillshade data was produced all or in part from LiDAR information as of 2017. |
| summary:
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This Digital Terrain Model (DTM) Hillshade data was produced all or in part from LiDAR information as of 2017. |
| accessInformation:
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| thumbnail:
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| maxScale:
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9012.6410177199 |
| typeKeywords:
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["Data","Service","Image Service","ArcGIS Server"] |
| description:
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This Digital Terrain Model (DTM) Hillshade data was produced all or in part from LiDAR information as of 2017. The LiDAR derived DTM Hillshade covers Dupage County, Illinois and include inland streams, rivers, lakes ponds and tidal features. These data are appropriate for use in local and regional analysis. Geiger Mode LiDAR data ≥30ppm encompassing approximately 363 square miles within DuPage County, Illinois. Digital Elevation Models are raster data sets created from whole LiDAR point cloud data sets (LAS files). The LAS files are the standard LiDAR file format which contains the raw point cloud data, these data are normally classified and distinguished between points on the ground, water or elevated features such as buildings, trees, towers, bridges, etc.. These LAS files are processed into elevation models to create gridded rasters. The last returns are used to map the bare-earth terrain (Digital Terrain Models - DTM), these are normally produced with irregularly-spaced points rather than the uniform grid structure of a Digital Elevation Model (DEM), Digital Terrain Models will often include breaklines to help define edges of water bodies. |
| licenseInfo:
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| catalogPath:
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| title:
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DTM2017_HillShade |
| type:
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Image Service |
| url:
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https://gis.dupageco.org/arcgis/rest/services |
| tags:
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["LIDAR","DTM","DuPage","Hillshade"] |
| culture:
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en-US |
| name:
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DTM2017_HillShade |
| guid:
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| minScale:
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576809.025134074 |
| spatialReference:
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NAD_1983_2011_StatePlane_Illinois_East_FIPS_1201_Ft_US |