SoPhy {SoPhy} | R Documentation |
This package provides a collection of tools that might be useful in soil physics. It is a first version of work in progress.
Currently, the following functionalities are provided:
swms2d
: R interface to SWMS_2d, an algorithm by
Simunek et. al based on finite elements to simulate water flux and
solute transport in soil
xswms2d
: interactive plot to define
soil structure and to simulate water flux and solute transport
calculate.horizons
for an example
flowpattern
stochastic simulation of dye tracer profiles
analyse.profile
: analysis of Brilliant Blue
tracer experiments w.r.t. the contamination risk index
BrilliantBlue
: examples of profile pictures
Pareto
: the Pareto distribution
risk.index
: esimation of the risk index
tortuosity
: estimation of tortuosity
from Brilliant Blue tracer
experiments
my.legend
: legend giving a colour spectrum
quader
: tools for 3d perspective plot
read.picture
, plotRGB
:
Conversion of tiff pictures to RGBA array and plotting RGB figures
The author thanks Rien van Genuchten, Carl A. Mendoza, Rene Therrien, and Edward Sudicky for kindly changing the former copyright to the GNU copyleft licence, hence making their code directly available for this package.
The work has been financially supported by the German Federal Ministry of Research and Technology (BMFT) grant PT BEO 51-0339476C during 2000-03.
LINUX: The tiff-library is avalailable from http://www.remotesensing.org/libtiff. Users of SuSe install libtiff and libtiff-devel.
WINDOWS: The binaries (libtiff3.dll, zlibl.dll, jpeg62.dll) are available from gnuwin32.sourceforge.net/packages/tiff.htm. Before starting the R session, add in the system variable $PATH the path to the libtiff3.dll file; the standard path to be added is C:\Programme\GnuWin32\bin. Further, make sure that zlib1.dll and jpeg62.dll are present.
Martin Schlather, martin.schlather@math.uni-goettingen.de http://www.stochastik.math.uni-goettingen.de/institute
The Fortran code has been published as ‘swms_2d’ by Jirka Simunek, T. Vogel and Martinus Th. van Genuchten, http://www.ussl.ars.usda.gov/MODELS/MODELS.HTM; the file ORTHOFEM.f was written by Edward A. Sudicky and Carl A. Mendoza, based on code by Frank W. Letniowshi and contributions by Rene Therrien, and modified by Jirka Simunek.
Schlather, M. (2006) SOPHY - a package for the simulation and the analysis of water flux in soil In preparation
Schlather, M. and Huwe, B. (2005a) A stochastic model for 3-dimensional flow patterns in dye tracer experiments. J. Hydrol. 310, 17-27.
Schlather, M. and Huwe, B. (2005b) A risk index for characterising flow pattern in soils using dye tracer distributions J. Contam. Hydrol. 79, to appear.
Schlather, M. and Huwe, B. (2006) Modelling inhomogeneous soils: Part I, Theory In preparation
Schlather, M. and Huwe, B. (2006) SOPHY - an interactive programme for water flow modelling In preparation
Schlather, M., Zeilinger, J. and Huwe, B. (2006) Modelling inhomogeneous soils: Part II, Applications In preparation
Simunek., J., Vogel, T., and van Genuchten, M.Th. (1994) The SWMS_2D code for simulating water flow and solute transport in two-dimensional variably saturated media, Version 1.21. Research Report No. 132, 197 p., U.S. Salinity Laboratory, USDA, ARS, Riverside, California.