Soil Physical Analysis

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Documentation for package ‘soilphysics’ version 5.0

• DESCRIPTION file.
• User guides, package vignettes and other documentation.
• Package NEWS.

Help Pages

soilphysics-package	Soil Physical Analysis
aggreg.stability	Soil Aggregate-Size Distribution
aggreg.stability_App	A shiny for Soil Aggregate-Size Distribution
bulkDensity	Soil Bulk Density Data Set
compaction	Soil Compaction Data Set
compressive_properties	Estimation of compressive properties by Defossez et al. (2003)
compressive_properties2	Estimation of compressive properties by Keller and Arvidsson (2007)
compressive_properties3	Estimation of compressive properties by de Lima et al. (2018)
compressive_properties4	Estimation of compressive properties by de Lima et al. (2020)
compressive_properties5	Estimation of compressive properties by O'Sullivan et al. (1999)
criticalmoisture	Critical Moisture and Maximum Bulk Density
fitbusscher	Self-starting Nls Busscher's (1990) Model for Soil Penetration Resistance
fitlbc	Parameter Estimation of the Load Bearing Capacity Model
fitsoilwater	Interactive Estimation of van Genuchten's (1980) Model Parameters
fitsoilwater2	Interactive Estimation of the Groenevelt and Grant (2004) Model Parameters
fitsoilwater3	Interactive Estimation of the Dexter's (2008) Model Parameters
fitsoilwater4	Self-starting Nls Power Models for Soil Water Retention
fitsoilwater5	Interactive Estimation of the Modified van Genuchten's Model Parameters
fitsoilwater_App	A shiny for fitting soil water retention curves
fun2form	Converting Function to Formula
getInitiallbc	Get Initial Parameter Estimates for the Load Bearing Capacity Model
hemc	High-Energy-Moisture-Characteristics Aggregate Stability
hydraulicCutOff	The matric potential at the point of hydraulic cut-off obtained from DE (Dexter et al., 2008) and GG (Groenevelt & Grant, 2004) water retention curves.
hydraulicCutOff2	The matric potential at the point of hydraulic cut-off using the point of maximum curvature of DE (Dexter et al. 2008) water retention curve.
iwc	Integral Water Capacity (IWC)
Kr_h	Unsaturated Hydraulic Conductivity
Kr_theta	Unsaturated Hydraulic Conductivity as a function of water content
liquidlimit	Soil Liquid Limit
llwr	Least Limiting Water Range (LLWR)
llwrPTF	Least Limiting Water Range (LLWR) Using Pedo-Transfer Functions
LLWR_App	A shiny for calculation of the usual least limiting water range
llwr_llmpr	Least Limiting Water (LLWR) and Matric Potential Ranges (LLMPR)
LLWR_LLMPR_App	A shiny for calculation of least limiting water and matric potential ranges of agricultural soils with calculated physical restriction thresholds
maxbulkdensity	Critical Moisture and Maximum Bulk Density
maxcurv	Maximum Curvature Point
particle.sedimentation	Sedimentation time of soil particles in aqueous media
particle.sedimentation_App	A shiny for time of particle sedimentation
plotCIsigmaP	Percentile Confidence Intervals for Simulated Preconsolidation Stress
PredComp	A shiny for simulation of soil compaction
psd	Soil Pore Size Distribution
r	Equation of capillary
Rsq	Multiple R-squared
r_App	A shiny for equation of capillarity
sigmaP	Preconsolidation Stress
simSigmaP	Simulating Preconsolidation Stress
Sindex	The S Index
skp1994	LLWR Data Set
SoilAggregate	Soil Aggregate Size Data Set
soilDeformation	Soil deformation by O'Sullivan and Robertson (1996)
soilphysics	Soil Physical Analysis
soilStrength	Estimation of precompression stress by Severiano et al. (2013)
soilStrength2	Estimation of precompression stress by Schjonning and Lamande (2018)
soilStrength3	Estimation of precompression stress by Saffih-Hdadi et al. (2009)
soilStrength4	Estimation of precompression stress by Lebert and Horn (1991)
soilStrength5	Estimation of precompression stress by Imhoff et al. (2004)
soilwater	Soil Water Retention, based on the van Genuchten's (1980) formula
soilwater2	Soil Water Retention, based on the Groenevelt & Grant (2004) formula
soilwater3	Soil Water Retention, based on the Dexter's (2008) formula
soilwater4	Soil Water Retention, based on Power Models
soilwater5	Soil Water Retention, based on the modified van Genuchten's formula
SSlbc	Self-Starting Nls Load Bearing Capacity Model
stressTraffic	Predicting Soil Stress Due to Agricultural Trafficability
voidratio	Void Ratio
WRC_App	A shiny to automatically fit the water retention curve