# Soil Physical Analysis

## Documentation for package ‘soilphysics’ version 5.1

- 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