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All functions

Angles()
Compute angles between lines or planes
Barton_Choubey() Barton_Choubey_plot()
Barton-Choubey criterion
CIPW()
CIPW Norm
CPTu_data
Example data for calculation of T2-statistic
CartToSphD()
Convert Cartesian to spherical coordinates (degrees)
Casagrande_LL()
Casagrande (flow curve) liquid limit test
Casagrande_chart()
Casagrande plasticity chart (LL vs PI)
CoDA_2Group_H1() CoDA_2Group_H2() CoDA_2Group_H3() CoDA_2Group_All()
CoDA Two Group Hypotheses
CoDA_Atyp_Idx()
CoDA Atypicality Index
CoDA_Univariate()
CoDA Univariate Statistics
DPM_data
Example data for calculation of RI coefficient or T-statistic
Dsize()
Interpolate a characteristic diameter from a grain-size distribution
Gini()
Gini index for a given split of a categorical variable
GreatCircleD()
Compute a great-circle path for a stereonet (degrees)
Hoek_Brown() Hoek_Brown_plot()
Hoek-Brown criterion
Klimmeridge
Klimmeridge shale organic matter content
Mohr_Circle()
Mohr circle solution and plot
NewStats_2samples()
New Statistics two samples (idependent & dependent)
NewStats_contrasts()
New Statistics contrasts
Pole()
Convert between a plane and its pole
Q_93()
Q system (1993)
RI()
Intraclass Correlation Coefficient for layer boundary determination
R_crit()
Mean resultant length critical value
Rotate()
Rotate a line about an axis
SmallCircleD()
Compute a small-circle path for a stereonet (degrees)
Spearman_crit()
Spearman critical value
SphToCartD()
Convert spherical to Cartesian coordinates (degrees)
StCoordLineD()
Compute stereonet coordinates for a line (degrees)
StPointD()
Compute equal-area stereonet coordinates from azimuth and inclination (degrees)
T2_stat()
Hotelling T2-statistic for layer boundary determination
TAS()
TAS Diagram
T_stat()
T-statistic for layer boundary determination
UCS()
Uniaxial Compressive Strength (UCS)
USCS()
Classify a soil using the Unified Soil Classification System (USCS)
USCS.coarse.symbol()
Determine the USCS symbol for coarse-grained soils
USCS.fine.symbol()
Determine the USCS symbol for fine-grained soils
additional_pks()
Additional useful packages
bearing_capacity()
Bearing capacity
carolina
Data for directional examples
chaprich.fun() SSchaprich() DRCchaprich()
Chapman-Richards Growth Model
clay_activity()
Clay activity chart
compaction_test()
Proctor Compaction Test Analysis
ci_chisq() ci_F() ci_t() ci_t2() ci_z() ci_z2()
Confidence interval from point estimate
cp_aic_eta()
Changepoint analysis of different layer models
cp_layers()
Plots a layered model and summarizes the statistics for each layer from a Changepoint result
d2s()
Conversion from dip directions to strike
degs()
Degrees
dichotomy()
Splits a vector into two classes
dir_2sample_test_circ()
Directional statistics two-sample test (2D)
dir_aov_spher_ax()
Test for common axis direction (axial)
dir_aov_spher_vec()
Test for common mean direction (vectorial)
dir_stats_circ()
Circular (directional) descriptive statistics
dir_stats_spher()
Spherical (3-D directional) descriptive statistics
DS_plot() DS_Mohr_plot()
Draws the results for a direct shear test
entropy()
Entropy for a given split of a categorical variable
exp3.fun() SSexp3() DRCexp3()
Exponential Model with Inverse Predictor (Type 3)
expneg.fun() SSexpneg() DRCexpneg()
Negative Exponential Model
expneg2.fun() SSexpneg2() DRCexpneg2()
Two-Asymptote Exponential Model
fallcone_limits()
Fall cone liquid limit and plastic limit test
ggstereo()
Create a stereographic projection base plot
grainSize.coefs()
Compute uniformity and curvature coefficients from a grain-size distribution
induced_stress()
Induced stress on a surface
insitu_stress()
In-situ vertical stress profile
invpoly1.fun() SSinvpoly1() DRCinvpoly1()
First-Order Inverse Polynomial Model
invpoly2.fun() SSinvpoly2() DRCinvpoly2()
Second-Order Inverse Polynomial Model
invpoly3.fun() SSinvpoly3() DRCinvpoly3()
Third-Order Inverse Polynomial Model
kostmod.fun() SSkostmod() DRCkostmod()
Modified Kostiakov Infiltration Model
layers_window()
Plots a layered model and summarizes the statistics for each layer
mcp()
Multiple change-point analysis for layer boundary determination
moving_avg_filter()
Moving average filter
moving_filter_plot_f()
Moving (weighted) average filter plot (filtered)
moving_filter_plot_r()
Moving (weighted) average filter plot (residual)
moving_wt_filter()
Moving weighted average filter
nautilus
Data for moving average filter
particle_size_graph()
Particle size distribution graph template
percentComponents()
Estimate gravel, sand, and fines content
piper_data_prep()
Piper Data Preparation
piper_diagram()
Piper diagram
pval_chisq() pval_F() pval_t() pval_t2() pval_z() pval_corr()
P-value for proposed population parameter
rads()
Radians
rose_diag_circ()
Rose diagram for circular (directional) data
rose_diag_spher()
Rose diagrams for spherical (3-D directional) data
s2d()
Conversion from strike to dip directions
sc_bic()
Structural change analysis of different layer models
sc_layers()
Plots a layered model and summarizes the statistics for each layer from a Strucchange result
similarity_coef()
Similarity Coefficient
size.from.sieve()
Get particle size from sieve number
soil_collapse()
Soil collapse and expansion potential chart
soil_expansion()
Soil expansion potential chart
soil_swelling()
Soil swelling potential chart
ternary_afm()
AFM Ternary Diagram
ternary_dickinson_qmflt()
QmFLt Ternary Diagram for Provenance Analysis
ternary_dickinson_qtfl()
QtFL Ternary Diagram for Provenance Analysis
ternary_fap()
FAP Ternary Diagram for Plutonic and Volcanic Rocks
ternary_feldspars()
Feldspar Ternary Diagram
ternary_folk_gsm()
Folk's Ternary Diagram for Clastic Coarse-Grained Rocks
ternary_folk_qfl()
Folk's Ternary Diagram for Sandstones
ternary_folk_qfm()
Folk's Ternary Diagram for Sedimentary Rocks
ternary_folk_smc()
Folk's Ternary Diagram for Clastic Fine-Grained Rocks
ternary_pyroclastic_size()
Ternary Diagram for Pyroclastic Rocks by Size
ternary_pyroclastic_type()
Ternary Diagram for Pyroclastic Rocks by Type
ternary_qap()
QAP Ternary Diagram for Plutonic and Volcanic Rocks
ternary_qap_g()
QAP Ternary Diagram for Gabbroic Rocks
ternary_qap_m_hbl()
QAP Ternary Diagram for Mafic Rocks (horneblende)
ternary_qap_m_ol()
QAP Ternary Diagram for Mafic Rocks (olivine)
ternary_qap_um()
QAP Ternary Diagram for Ultramafic Rocks
ternary_qap_um_hbl()
QAP Ternary Diagram for Ultramafic Rocks with Hornblende
ternary_shepard()
Shepard's Ternary Diagram for Soils
ternary_usda()
USDA's Ternary Diagram for Soils
varexp.fun() SSvarexp() DRCvarexp()
Exponential Variogram Model
vargauss.fun() SSvargauss() DRCvargauss()
Gaussian Variogram Model
varsph.fun() SSvarsph() DRCvarsph()
Spherical Variogram Model