Raster Vertical Differencing [ Video Tutorial ]

Yosemite National Park, CA: Rockfall Studies
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Overview

NCALM Seed Project. PI: Valerie Zimmer, University of California Berkeley. The area of interest is defined by a quadrilateral polygon with an area of 35.1 km2, located in the grounds of the Yosemite National Park, specifically the Half Dome and the Yosemite Valley. The polygon is located approximately 127 km east of Modesto, CA and 110 km north of Fresno, CA. The data were collected for rock fall studies in the Yosemite National Park using seismic, acoustic, and Lidar data.


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
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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).

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Data Citation     |     Use License: CC BY 4.0