A comparison of techniques for calculating gradient and aspect from a gridded digital elevation model
- 1 October 1989
- journal article
- research article
- Published by Informa UK Limited in International Journal of Geographical Information Science
- Vol. 3 (4), 323-334
- https://doi.org/10.1080/02693798908941519
Abstract
Digital elevation data spaced on a regular 30 m grid were generated over a region of moderate topography in south-east Australia. Six algorithms for calculating gradient and aspect from these data were compared. General linear regression models and the third-order finite difference methods were the most accurate.Keywords
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