[AM6-1] Calculating surface derivatives

See [AM6-3] Surface features

Introduction

External resources

• ITC (2013) The Core of GIScience: A Process-based Approach. ITC educational textbook series. 524 pages. ISSN 1567-5777. ISBN 978-90-3653-719-3.

Skills

• 202 - List the likely sources of error in slope and aspect maps derived from DEMs and state the circumstances under which these can be very severe
  List the likely sources of error in slope and aspect maps derived from DEMs and state the circumstances under which these can be very severe
• 203 - Outline a number of different methods for calculating slope from a Digital Elevation Model (DEM)
  Outline a number of different methods for calculating slope from a Digital Elevation Model (DEM)
• 204 - Outline how higher order derivatives of height can be interpreted
  Outline how higher order derivatives of height can be interpreted
• 205 - Explain how slope and aspect can be represented as the vector field given by the first derivative of height
  Explain how slope and aspect can be represented as the vector field given by the first derivative of height
• 206 - Explain why the properties of spatial continuity are characteristic of spatial surfaces
  Explain why the properties of spatial continuity are characteristic of spatial surfaces
• 207 - Explain why zero slopes are indicative of surface specific points such as peaks, pits and passes and list the conditions necessary for each
  Explain why zero slopes are indicative of surface specific points such as peaks, pits and passes and list the conditions necessary for each
• 208 - Design an algorithm that calculates slope and aspect from a Triangulated Irregular Network (TIN) model
  Design an algorithm that calculates slope and aspect from a Triangulated Irregular Network (TIN) model

Status

Contributors

• Rob Lemmens
  University of Twente, Faculty of Geo-Information Science and Earth Observation (ITC)
  https://research.utwente.nl/en/persons/rob-lemmens