Vertical Differencing [ Video Tutorial ]

Calhoun Critical Zone Observatory 2016 Leaf Off LiDAR Survey
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Overview

The National Center for Airborne Laser Mapping (NCALM) conducted a lidar survey of the Calhoun Critical Zone Observatory (CCZO) area on February 26, 2016. The survey was funded by NSF award EAR-1339015; the Calhoun CZO is funded by NSF award EAR-1331846 (P.I. Daniel deB. Richter).

Note: Lidar and DEM data have been adjusted by -0.098 meters to adjust for systematic vertical bias determined by analysis of 1251 ground check points collected at the Spartanburg airfield using a vehicle-mounted GPS antenna and receiver.


Publications associated with this dataset can be found at NCALM's Data Tracking Center

Reference Dataset
Total points: pts
Survey Area: km2
Point Density: pts/m2
Compare Dataset  
Total points: pts
Survey Area: km2
Point Density: pts/m2
Select area of data to process  
 

1. Vertical Differencing Datasets and Coordinate System  


  Reference dataset:
  Compare dataset:  
Dataset:

Survey Date:
Horizontal Coordinates:
Vertical Coordinates:
Units:







Data Selection Coordinates:       Manually enter selection coordinates (in the horizontal coordinate system listed above)  
  Choose Return Classification    
  Ground

2. DEM Generation (TIN)  

  Grid Resolution (Default = 1.0 meter)
  Max. triangle size (Default 50 units)

3. Define a minimum level of detection (optional)  

  User-defined Minimum Level of Detection

4. Visualization  

  Generate additional hillshade images from DEMs for reference and compare datasets.

Altitude of the light:  (in range: [0-90] degrees)
Azimuth of the light:  (in range: [0-360] degrees)

Job Description

These options allow users to describe and keep track of their jobs. Information entered below is recorded along with other job parameters in your personal lidar job archive accessed via myOpenTopo (available only to registered OpenTopography users).

Job title (up to 100 characters)
Job description (up to 500 characters)
Enter your e-mail address
for notification upon completion of processing
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Data Citation     |     Use License: CC BY 4.0