2DSpecTools performs spectral analysis and frequency-domain filtering of gridded, two-dimensional data using the procedures described in:
Perron, J.T., J.W. Kirchner and W.E. Dietrich (2008). Spectral evidence of characteristic spatial scales and non-fractal structure in landscapes. J. Geophys. Res., 113, F04003, doi:10.1029/2007JF000866. PDF
The current version of 2DSpecTools includes a step-by-step tutorial prepared for the NSF-supported workshop "New Tools in Process-Based Analysis of Lidar Topographic Data" in June 2010 by Taylor Perron.
TopoTools is a set of Matlab functions for performing various tasks related to I/O and analysis of gridded topographic data, including display of shaded relief maps, reading and writing of ESRI and Surfer ASCII grids, and flow routing.
nldiff reproduces the examples in Figures 2 and 3 in:
Perron, J.T. (2011). Numerical methods for nonlinear hillslope transport laws. J. Geophys. Res., 116, F02021, doi:10.1029/2010JF001801. PDF