Model:TopoToolbox: Difference between revisions
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|Spatialscale=Regional-Scale, Landscape-Scale, Watershed-Scale | |Spatialscale=Regional-Scale, Landscape-Scale, Watershed-Scale | ||
|One-line model description=A set of Matlab functions for topographic analysis | |One-line model description=A set of Matlab functions for topographic analysis | ||
|Extended model description=TopoToolbox provides a set of Matlab functions that support the analysis of relief and flow pathways in digital elevation models. The major aim of TopoToolbox is to offer stable and efficient analytical GIS utilities in a non-GIS environment in order to support the simultaneous application of GIS-specific and other quantitative methods. | |Extended model description=TopoToolbox provides a set of Matlab functions that support the analysis of relief and flow pathways in digital elevation models. The major aim of TopoToolbox is to offer stable and efficient analytical GIS utilities in a non-GIS environment in order to support the simultaneous application of GIS-specific and other quantitative methods. With version 2, TopoToolbox adds various tools specifically targeted at tectonic geomorphologists such as Chiplots and slopearea plots. | ||
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{{Start model keyword table}} | {{Start model keyword table}} | ||
{{Model keywords | {{Model keywords | ||
|Model keywords=topographic analysis | |Model keywords=topographic analysis | ||
}} | |||
{{Model keywords | |||
|Model keywords=geomorphology | |||
}} | |||
{{Model keywords | |||
|Model keywords=geomorphometry | |||
}} | |||
{{Model keywords | |||
|Model keywords=Matlab | |||
}} | }} | ||
{{End a table}} | {{End a table}} | ||
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|Last name=Schwanghart | |Last name=Schwanghart | ||
|Type of contact=Model developer | |Type of contact=Model developer | ||
|Institute / Organization= | |Institute / Organization=Institute of Earth and Environmental Science | ||
|Town / City= | |Postal address 1=Geohazards | ||
|Postal code= | |Postal address 2=Karl-Liebknecht-Str. 24-25 | ||
|Town / City=Potsdam-Golm | |||
|Postal code=14476 | |||
|State=NO STATE | |State=NO STATE | ||
|Country= | |Country=Germany | ||
|Email address=w.schwanghart@ | |Email address=w.schwanghart@geo.uni-potsdam.de | ||
}} | |||
{{Additional modeler information | |||
|Additional first name=Dirk | |||
|Additional last name=Scherler | |||
|Additional type of contact=Model developer | |||
}} | }} | ||
{{Model technical information | {{Model technical information | ||
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{{Input - Output description | {{Input - Output description | ||
|Describe input parameters=ESRI ASCII digital elevation model | |Describe input parameters=GeoTiff, ESRI ASCII digital elevation model | ||
|Input format=ASCII | |Input format=ASCII, Binary | ||
|Describe output parameters=topographic derivatives (slope, curvature, flow accumulation, drainage basins), | |Describe output parameters=topographic derivatives (slope, curvature, flow accumulation, drainage basins), flow paths, chiplots, swath profiles, among others. | ||
|Output format=ASCII | |Output format=ASCII | ||
|Pre-processing software needed?=No | |Pre-processing software needed?=No | ||
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|If above answer is yes=Matlab | |If above answer is yes=Matlab | ||
}} | }} | ||
{{Process description model}} | {{Process description model | ||
|Describe processes represented by the model=The TopoToolbox 2 is a Matlab based software for Digital Elevation Model (DEM) analysis. It uses an object oriented programming (OOP) approach to represent and work with geoferenced raster data, flow directions, stream networks and swath profiles in Matlab. TopoToolbox offers a wide range of tools to analyse DEMs, flow and stream networks, that allow for interactive and automated workflows. | |||
|Describe key physical parameters and equations=none | |||
|Describe length scale and resolution constraints=All spatial data should be provided as projected, georeferenced (e.g., UTM) grids or shapefiles where spatial units are given in meters. Data referenced in a geographic coordinate system will return unexpected results. | |||
|Describe time scale and resolution constraints=none | |||
|Describe any numerical limitations and issues=In general, Matlab stores all data in the main memory. Manageable grid size will depend on your available RAM. For conveniently working with grids with ~5000x5000 rows and columns, a 4Gb of RAM will likely be sufficient. | |||
}} | |||
{{Model testing}} | {{Model testing}} | ||
{{Users groups model | {{Users groups model | ||
|Do you have current or future plans for collaborating with other researchers?=I am always looking for people interested in improving and enhancing TopoToolbox. | |Do you have current or future plans for collaborating with other researchers?=I am always looking for people interested in improving and enhancing TopoToolbox. | ||
}} | }} | ||
{{Documentation model | {{Documentation model | ||
|Manual model available=Yes | |Manual model available=Yes | ||
|Model | |Model manual=Usersguide 1 intro.pdf, Usersguide 2 mfd.pdf, Usersguide 3 ksn.pdf, | ||
}} | }} | ||
{{Additional comments model}} | {{Additional comments model}} |
Revision as of 13:39, 4 April 2014
TopoToolbox
Metadata
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Download statistics
<pbars ytitle=Downloads Title='Monthly Downloads topotoolbox' xlabels=true size=900x200 ymax=140 grid=true box=true cubic=true plots=open xformat=number connected=true angle=90 legend> ,Total downloads: 2799 2008 - Jan,0 Feb,0 Mar,0 Apr,0 May,0 Jun,0 Jul,0 Aug,0 Sep,0 Oct,0 Nov,0 Dec,0 2009 - Jan,0 Feb,0 Mar,0 Apr,0 May,0 Jun,0 Jul,0 Aug,0 Sep,0 Oct,0 Nov,0 Dec,0 2010 - Jan,11 Feb,57 Mar,60 Apr,49 May,52 Jun,31 Jul,50 Aug,46 Sep,53 Oct,67 Nov,40 Dec,41 2011 - Jan,62 Feb,37 Mar,34 Apr,33 May,33 Jun,20 Jul,45 Aug,19 Sep,18 Oct,22 Nov,52 Dec,23 2012 - Jan,29 Feb,32 Mar,45 Apr,54 May,62 Jun,37 Jul,33 Aug,20 Sep,16 Oct,34 Nov,25 Dec,17 2013 - Jan,24 Feb,39 Mar,48 Apr,17 May,37 Jun,40 Jul,28 Aug,49 Sep,42 Oct,44 Nov,47 Dec,41 2014 - Jan,62 Feb,66 Mar,58 Apr,72 May,65 Jun,69 Jul,29 Aug,52 Sep,67 Oct,82 Nov,90 Dec,76 2015 - Jan,67 Feb,129 Mar,0 Apr,0 May,0 Jun,0 Jul,0 </pbars>
Introduction
TopoToolbox provides a set of Matlab functions that support the analysis of relief and flow pathways in digital elevation models. The major aim of TopoToolbox is to offer stable and efficient analytical GIS utilities in a non-GIS environment in order to support the simultaneous application of GIS-specific and other quantitative methods.
History
See the readme file in the distribution.
References
Source code
Suggested way to reference a version of the model source code following data reference guidelines:
Publication(s) | Model described | Citations |
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Overview and general
Publication(s) | Model described | Citations |
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Applications
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Related theory and data
Publication(s) | Model described | Citations |
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Issues
TopoToolbox is optimized for small data sets (grid size less than 2000 columns x 2000 rows, depending on your available main memory). This short-coming is due to various issues. First of all, Matlab loads all variables in the main memory and does not work on a file basis (such as ArcGIS for example does). Second, Matlab performs best for double precision data and sparse matrix operations currently only support for double precision data. Hence, all variables are stored as double precision, which requires large memory. 64-bit computers may overcome many of these weaknesses.
Help
There is a short documentation (userguide.m) including html-files in the distribution. Each function contains a comprehensive help section with syntax explanations and examples.
A comprehensive function overview and description can be found at http://physiogeo.unibas.ch/topotoolbox/doc/index.html
Input Files
There is a example file included in the distribution. Own data should have the ESRI ArcGIS ASCII raster format and can be read with the function rasterread.
Output Files
Output can be written as ESRI ArcGIS ASCII raster format using the function rasterwrite.
License notice
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.