The hardware and bandwidth for this mirror is donated by METANET, the Webhosting and Full Service-Cloud Provider.
If you wish to report a bug, or if you are interested in having us mirror your free-software or open-source project, please feel free to contact us at mirror[@]metanet.ch.

spsh: Estimation and Prediction of Parameters of Various Soil Hydraulic Property Models

Estimates model parameters of soil hydraulic property functions by inverting measured data. A wide range of hydraulic models, weighting schemes, global optimization algorithms, Markov chain Monte Carlo samplers, and extended statistical analyses of results are provided. Prediction of soil hydraulic property model parameters and common soil properties using pedotransfer functions is facilitated. Parameter estimation is based on identically and independentally distributed (weighted) model residuals, and simple model selection criteria (Hoege, M., Woehling, T., and Nowak, W. (2018) <doi:10.1002/2017WR021902>) can be calculated. The included models are the van Genuchten-Mualem in its unimodal, bimodal and trimodal form, the the Kosugi 2 parametric-Mualem model, and the Fredlund-Xing model. All models can be extended to account for non-capillary water storage and conductivity (Weber, T.K.D., Durner, W., Streck, T. and Diamantopoulos, E. (2019) <doi:10.1029/2018WR024584>. The isothermal vapour conductivity (Saito, H., Simunek, J. and Mohanty, B.P. (2006) <doi:10.2136/vzj2006.0007>) is calculated based on volumetric air space and a selection of different tortuosity models: (Grable, A.R., Siemer, E.G. (1968) <doi:10.2136/sssaj1968.03615995003200020011x>, Lai, S.H., Tiedje J.M., Erickson, E. (1976) <doi:10.2136/sssaj1976.03615995004000010006x>, Moldrup, P., Olesen, T., Rolston, D.E., and Yamaguchi, T. (1997) <doi:10.1097/00010694-199709000-00004>, Moldrup, P., Olesen, T., Yoshikawa, S., Komatsu, T., and Rolston, D.E. (2004) <doi:10.2136/sssaj2004.7500>, Moldrup, P., Olesen, T., Yoshikawa, S., Komatsu, T., and Rolston, D.E. (2005) <doi:10.1097/01.ss.0000196768.44165.1f>, Millington, R.J., Quirk, J.P. (1961) <doi:10.1039/TF9615701200>, Penman, H.L. (1940) <doi:10.1017/S0021859600048164>, and Xu, X, Nieber, J.L. Gupta, S.C. (1992) <doi:10.2136/sssaj1992.03615995005600060014x>).

Version: 1.1.0
Depends: DEoptim (≥ 2.2.4), lhs (≥ 0.16.0), pracma (≥ 2.1.4), FME (≥ 1.3.5), hypergeo (≥ 1.2-13)
Imports: Rdpack
Published: 2020-04-06
DOI: 10.32614/CRAN.package.spsh
Author: Tobias KD Weber [aut, cre], Efstathios Diamantopoulos [ctb], Melanie Weynants [ctb]
Maintainer: Tobias KD Weber <tobias.weber at uni-hohenheim.de>
License: GPL-2 | GPL-3 [expanded from: GPL (≥ 2)]
NeedsCompilation: no
In views: Agriculture
CRAN checks: spsh results

Documentation:

Reference manual: spsh.pdf

Downloads:

Package source: spsh_1.1.0.tar.gz
Windows binaries: r-devel: spsh_1.1.0.zip, r-release: spsh_1.1.0.zip, r-oldrel: spsh_1.1.0.zip
macOS binaries: r-release (arm64): spsh_1.1.0.tgz, r-oldrel (arm64): spsh_1.1.0.tgz, r-release (x86_64): spsh_1.1.0.tgz, r-oldrel (x86_64): spsh_1.1.0.tgz
Old sources: spsh archive

Linking:

Please use the canonical form https://CRAN.R-project.org/package=spsh to link to this page.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.