soilhypfit: Modelling of Soil Water Retention and Hydraulic Conductivity Data

Provides functions for efficiently estimating properties of the Van Genuchten-Mualem model for soil hydraulic parameters from possibly sparse soil water retention and hydraulic conductivity data by multi-response parameter estimation methods (Stewart, W.E., Caracotsios, M. Soerensen, J.P. (1992) "Parameter estimation from multi-response data" <doi:10.1002/aic.690380502>). Parameter estimation is simplified by exploiting the fact that residual and saturated water contents and saturated conductivity are conditionally linear parameters (Bates, D. M. and Watts, D. G. (1988) "Nonlinear Regression Analysis and Its Applications" <doi:10.1002/9780470316757>). Estimated parameters are optionally constrained by the evaporation characteristic length (Lehmann, P., Bickel, S., Wei, Z. and Or, D. (2020) "Physical Constraints for Improved Soil Hydraulic Parameter Estimation by Pedotransfer Functions" <doi:10.1029/2019WR025963>) to ensure that the estimated parameters are physically valid. Common S3 methods and further utility functions allow to process, explore and visualise estimation results.

Version: 0.1-7
Depends: graphics, nloptr (≥ 1.2.1), snowfall, stats, utils
Imports: mgcv, quadprog (≥ 1.5-7), parallel, Rmpfr (≥ 0.7-2), SoilHyP (≥ 0.1.3)
Suggests: lattice
Published: 2022-08-31
DOI: 10.32614/CRAN.package.soilhypfit
Author: Andreas Papritz [aut, cre]
Maintainer: Andreas Papritz <papritz at>
License: GPL-2 | GPL-3 | LGPL-3 [expanded from: GPL (≥ 2) | LGPL-3]
NeedsCompilation: no
SystemRequirements: gmp (>= 4.2.3), mpfr (>= 3.0.0)
Materials: NEWS ChangeLog
In views: Hydrology
CRAN checks: soilhypfit results


Reference manual: soilhypfit.pdf


Package source: soilhypfit_0.1-7.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
macOS binaries: r-release (arm64): soilhypfit_0.1-7.tgz, r-oldrel (arm64): soilhypfit_0.1-7.tgz, r-release (x86_64): soilhypfit_0.1-7.tgz, r-oldrel (x86_64): soilhypfit_0.1-7.tgz
Old sources: soilhypfit archive


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