1Geohazards, University of Potsdam, Institute of Earth and Environmental Science, Karl-Liebknecht-Str. 24–25, 14476 Potsdam-Golm, Germany
2Department of Agroecology, Aarhus University, Blichers Allé 20, 8830 Tjele, Denmark
3Geological and Planetary Sciences, California Institute of Technology, 1200 E California Blvd, Mailcode 100-23, Pasadena, CA 91125, USA
Received: 22 Jul 2013 – Discussion started: 16 Aug 2013
Abstract. TopoToolbox is a MATLAB program for the analysis of digital elevation models (DEMs). With the release of version 2, the software adopts an object-oriented programming (OOP) approach to work with gridded DEMs and derived data such as flow directions and stream networks. The introduction of a novel technique to store flow directions as topologically ordered vectors of indices enables calculation of flow-related attributes such as flow accumulation ∼20 times faster than conventional algorithms while at the same time reducing memory overhead to 33% of that required by the previous version. Graphical user interfaces (GUIs) enable visual exploration and interaction with DEMs and derivatives and provide access to tools targeted at fluvial and tectonic geomorphologists. With its new release, TopoToolbox has become a more memory-efficient and faster tool for basic and advanced digital terrain analysis that can be used as a framework for building hydrological and geomorphological models in MATLAB.
Revised: 13 Dec 2013 – Accepted: 27 Dec 2013 – Published: 15 Jan 2014
Schwanghart, W. and Scherler, D.: Short Communication: TopoToolbox 2 – MATLAB-based software for topographic analysis and modeling in Earth surface sciences, Earth Surf. Dynam., 2, 1-7, doi:10.5194/esurf-2-1-2014, 2014.