An extension to derive slope, aspect and curvature.
ArcView uses two different methods to derive aspect and slope:
1st Horn's method
2nd the Zenvenbergen and Thorne algorithm
Horn's method is better for rough surfaces, whereas the Zevenbergen
and Thorne algorithm is best for smooth surfaces (Burrough, P. A. and
McDonnell. R. A. 1999 (191-192): Principles of Geographical Information Systems)
DEMAT provides the following derivates of continous surfaces:
1) Slope > degrees > Horn
2) Slope > percent > Horn
3) Slope > degrees > Zenvenbergen and Thorne
4) Slope > percent > Zenvenbergen and Thorne
5) Aspect > Horn
6) Aspect > Zenvenbergen and Thorne
7) Curvature
8) Profile curvatue
9) Plan curvature
Have a look at my other extensions and scripts:
ConFiT - Convolution Filter Tool
DEMAT - Digital Elevation Model Anylasis Tool
HexSample - Build hexagons and triangular sampling schemes
Texture - Texture Analysis and Neighbourhood Statistics
NoData Converter - Converts NoData to a value and vice versa
SRTM batch import |
