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Petter Pilesjö

Petter Pilesjö

Professor

Petter Pilesjö

Estimating slope from raster data : A test of eight different algorithms in flat, undulating and steep terrain

Author

  • J. Tang
  • P. Pilesjö

Editor

  • C.A. Brebbia

Summary, in English

Eight frequently used slope algorithms based on a DEM (Digital Elevation Model) have been compared in flat, gently sloping/undulating, and steep terrain in order to investigate differences in estimated results. The matter of scale/resolution has not been considered, and the focus has not been on comparing the estimates with "ground truth" data but on comparisons between the different algorithms. Pair-wise statistical tests have been carried out to detect significant differences between the methods in general, and also between different terrains. In this way, we make explanations and recommendations regarding these differences and "best practice" depending on data/terrain.

Department/s

  • Dept of Physical Geography and Ecosystem Science

Publishing year

2011

Language

English

Pages

143-154

Publication/Series

Transactions on Ecology and the Environment

Volume

146

Document type

Conference paper

Publisher

WIT Press

Topic

  • Probability Theory and Statistics
  • Physical Geography

Keywords

  • Algorithm
  • Dem
  • Slope
  • Terrain

Conference name

6th International Conference on River Basin Management including all aspects of Hydrology, Ecology, Environmental Management, Flood Plains and wetlands, RM 2011

Conference date

2011-05-25 - 2011-05-27

Conference place

Riverside, CA, United States

Status

Published

ISBN/ISSN/Other

  • ISSN: 1743-3541
  • ISBN: 9781845645168