CRAN/E | soilhypfit

soilhypfit

Modelling of Soil Water Retention and Hydraulic Conductivity Data

Installation

About

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.

System requirements gmp (>= 4.2.3), mpfr (>= 3.0.0)

Key Metrics

Version 0.1-7
Published 2022-08-31 770 days ago
Needs compilation? no
License GPL-2
License GPL-3
License LGPL-3
CRAN checks soilhypfit results

Downloads

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Maintainer

Maintainer

Andreas Papritz

Authors

Andreas Papritz

aut / cre

Material

NEWS
ChangeLog
Reference manual
Package source

In Views

Hydrology

macOS

r-release

arm64

r-oldrel

arm64

r-release

x86_64

r-oldrel

x86_64

Windows

r-devel

x86_64

r-release

x86_64

r-oldrel

x86_64

Old Sources

soilhypfit archive

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