A comparison of techniques for calculating gradient and aspect from a gridded digital elevation model |
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| Authors: | ANDREW K SKIDMORE |
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| Institution: | Department of Forestry , Australian National University , G.P.O. Box 4, Canberra, Australian Capital Territory, 2601, Australia |
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| Abstract: | 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. |
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