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Elevation/IL_Lawrence_DTM_2020 (ImageServer)

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Service Description:

Product: Processed, classified lidar point cloud data tiles in LAS 1.4 format. Geographic Extent of entire 3 county project area: Approximately 1,409 square miles in southeastern Illinois. Dataset Description: The Lidar 2020 Data Acquisition of 3 Counties in Wabash and Embarrass Basin lidar project called for the planning, acquisition, processing, and production of derivative products of QL2+ lidar data to be collected at a nominal pulse spacing (NPS) of 0.5 meters. Project specifications were based on the U.S. Geological Survey National Geospatial Program Base Lidar Specification, Version 2.1. The data was developed based on a horizontal datum/projection of NAD83 (2011) State Plane Illinois East Zone Survey Feet, and a vertical datum of NAVD88 (GEOID12B) US Survey Feet. Lidar data was delivered as processed LAS 1.4 files formatted to 10,548 individual 2,000-foot x 2,000-foot tiles. Ground Conditions: Lidar was collected from March 30, 2020 through April 10, 2020 while no snow was on the ground and rivers were at or below normal levels. In order to post process the lidar data to meet task order specifications and meet ASPRS vertical accuracy guidelines, Woolpert established 18 ground control points that were used to calibrate the lidar to known ground locations established throughout the project area. An additional 121 independent accuracy checkpoints (67 NVA points and 54 VVA points), were collected and used to assess the vertical accuracy of the data. These checkpoints were not used to calibrate or post process the data.



Name: Elevation/IL_Lawrence_DTM_2020

Description:

Product: Processed, classified lidar point cloud data tiles in LAS 1.4 format. Geographic Extent of entire 3 county project area: Approximately 1,409 square miles in southeastern Illinois. Dataset Description: The Lidar 2020 Data Acquisition of 3 Counties in Wabash and Embarrass Basin lidar project called for the planning, acquisition, processing, and production of derivative products of QL2+ lidar data to be collected at a nominal pulse spacing (NPS) of 0.5 meters. Project specifications were based on the U.S. Geological Survey National Geospatial Program Base Lidar Specification, Version 2.1. The data was developed based on a horizontal datum/projection of NAD83 (2011) State Plane Illinois East Zone Survey Feet, and a vertical datum of NAVD88 (GEOID12B) US Survey Feet. Lidar data was delivered as processed LAS 1.4 files formatted to 10,548 individual 2,000-foot x 2,000-foot tiles. Ground Conditions: Lidar was collected from March 30, 2020 through April 10, 2020 while no snow was on the ground and rivers were at or below normal levels. In order to post process the lidar data to meet task order specifications and meet ASPRS vertical accuracy guidelines, Woolpert established 18 ground control points that were used to calibrate the lidar to known ground locations established throughout the project area. An additional 121 independent accuracy checkpoints (67 NVA points and 54 VVA points), were collected and used to assess the vertical accuracy of the data. These checkpoints were not used to calibrate or post process the data.



Single Fused Map Cache: false

Extent: Initial Extent: Full Extent: Pixel Size X: 1.5

Pixel Size Y: 1.5

Band Count: 1

Pixel Type: F32

RasterFunction Infos: {"name":"None","description":"A No-Op Function.","help":""}, {"name":"Color Ramp","description":"Outputs a rendered raster.","help":""}, {"name":"Hillshade","description":"Generates a grayscale model of a terrain with the sun's relative position taken into account for shading the terrain.","help":""}, {"name":"MultiDirectional HillShade","description":"The Multidirectional hillshade is a raster function that helps improve terrain visualization. This function yields a more realistic representation of terrain shading (including diffuse illumination from the sky) when compared to the default hillshade which is based on solar illumination from a single direction.","help":""}

Mensuration Capabilities: Basic

Has Histograms: false

Has Colormap: false

Has Multi Dimensions : false

Rendering Rule:

Min Scale: 0

Max Scale: 0

Copyright Text: Illinois State Geological Survey (ISGS), a division of the Prairie Research Institute of the University of Illinois, Illinois Department of Commerce and Opportunity and USGS and Woolpert

Service Data Type: esriImageServiceDataTypeGeneric

Min Values: 392.95257568359375

Max Values: 630.6504516601562

Mean Values: 452.3870914821924

Standard Deviation Values: 37.95336556754

Object ID Field:

Fields: None

Default Mosaic Method: Center

Allowed Mosaic Methods:

SortField:

SortValue: null

Mosaic Operator: First

Default Compression Quality: 75

Default Resampling Method: Bicubic

Max Record Count: null

Max Image Height: 4100

Max Image Width: 15000

Max Download Image Count: null

Max Mosaic Image Count: null

Allow Raster Function: true

Allow Compute TiePoints: false

Supports Statistics: false

Supports Advanced Queries: false

Use StandardizedQueries: true

Raster Type Infos: Has Raster Attribute Table: false

Edit Fields Info: null

Ownership Based AccessControl For Rasters: null

Child Resources:   Info   Key Properties   Legend   MultiDimensionalInfo   rasterFunctionInfos

Supported Operations:   Export Image   Identify   Measure   Compute Histograms   Compute Statistics Histograms   Get Samples   Compute Class Statistics