Raster Vertical Differencing [ Video Tutorial ]

Susquehanna Shale Hills Critical Zone Observatory: Leaf On Survey
Welcome Guest   ( Sign In )

Overview

This high-resolution lidar survey covers an area of 209 km2 located 10 miles southwest of State College, Pennsylvania. The data collection was funded by the National Science Foundation (NSF) and performed by the National Center for Airborne Laser Mapping (NCALM) during peak leaf-on and leaf-off conditions in 2010 (July 2010 and December 2010, respectively). The dataset contains point cloud tiles in LAS format, 1 m Digital Surface Model (DSM) derived using first-stop points, 1 m Digital Elevation Model (DEM) derived using ground-class points and 1 m hill shade dataset derived from DEM. These datasets were used to estimate vegetation biomass and distributions, provide bare earth elevations, and to assist with prediction of Critical Zone creation and structure.


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

Reference Dataset
Raster Resolution:
Survey Area: km2
Compare Dataset  
Raster Resolution:
Survey Area: km2
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 (Select an area on map)
  Manually enter selection coordinates (in the horizontal coordinate system listed above)  

  Grid Resolution (Default = 1 meter)

2. Layer Types

Reference dataset:
Digital Terrain Model (DTM)
Digital Surface Model (DSM)
Compare dataset:

3. Error handling (optional)  

  Estimate mean uncertainty using geostatistical approach.     (Requires Digital Terrain Model (DTM) option from "Layer Types" step above.)
  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 & Notification

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

Email address
for notification upon completion of processing
  Sign in
More options
By accessing data via OpenTopography you agree to acknowledge OpenTopography and the dataset source in publications, presentations, and other materials produced using these data:
Data Citation     |     Use License: CC BY 4.0