PoR2Geo_azimuth         Azimuth conversion from PoR to geographical
                        coordinate reference system
PoR_coordinates         PoR coordinates
PoR_crs                 PoR coordinate reference system
PoR_map                 Plot data in PoR map
PoR_shmax               Direction of Maximum Horizontal Stress in PoR
                        reference system
PoR_stress2grid         Spatial interpolation of SHmax in PoR
                        coordinate reference system
Q4_to_euler             Euler angle/axis from quaternion
abs_vel                 Absolute Plate Velocity
angle-conversion        Degrees to Radians
angle_vectors           Angle Between Two Vectors
axes                    Plot axes
circle_stats            Summary Statistics of Circular Data
circular_dispersion_boot
                        Bootstrapped estimates for circular dispersion
circular_sd_error       Standard Error of Mean Direction of Circular
                        Data
compact_grid            Compact smoothed stress field
confidence              Confidence Interval around the Mean Direction
                        of Circular Data
conjugate_Q4            Conjugation of a Quaternion
coordinate_mod          Coordinate Correction
coordinates             Coordinate Transformations
coordinates2            Coordinate Transformations
cpm_models              Global model of current plate motions
deviation_norm          Normalize Angle Between Two Directions
deviation_shmax         Deviation of Observed and Predicted Directions
                        of Maximum Horizontal Stress
dispersion              Circular distance and dispersion
dispersion_grid         Spatial analysis of dispersion
dist_greatcircle        Distance between points
distance_from_pb        Distance from plate boundary
distance_mod            Normalize angular distance on a sphere distance
earth_radius            Earth's radius in km
equivalent_rotation     Equivalent rotation
est.kappa               Concentration parameter of von Mises
                        distribution
euler_pole              Euler pole object
euler_to_Q4             Quaternion from Euler angle-axis representation
                        for rotations
get_azimuth             Azimuth Between two Points
get_distance            Helper function to Distance from plate boundary
get_projected_pb_strike
                        Helper function to get Distance from plate
                        boundary
get_relrot              Helper function to Equivalent rotation
iceland                 Example stress data for outward-moving
                        displaced plate boundary
is.Q4                   Check if object is quaternion
is.euler                Check if object is euler.pole
kuiper_test             Kuiper Test of Circular Uniformity
line_azimuth            Extract azimuths of line segments
mean_resultant_length   Mean Resultant Length
model_shmax             Theoretical Direction of Maximum Horizontal
                        Stress in the geographical reference system.
norm_chisq              Normalized Chi-Squared Test for Circular Data
normalize_Q4            Quaternion normalization
nuvel1                  NUVEL-1 Global model of current plate motions
nuvel1_plates           Plate Boundaries on the Earth
pb2002                  Global model of current plate motions
plates                  Plate Boundaries on the Earth
por_transformation_df   Conversion between spherical PoR to
                        geographical coordinate system
por_transformation_quat
                        Conversion between PoR to geographical
                        coordinate system using quaternions
por_transformation_sf   Conversion between PoR to geographical
                        coordinates of spatial data
prd_err                 Error of Model's Prediction
product_Q4              Product of quaternions
projected_pb_strike     Strike of the plate boundary projected on data
                        point
quantise_wsm_quality    Numerical values to World Stress Map Quality
                        Ranking
quick_plot              Plotting stress analysis results
raster_transformation   Conversion between PoR to geographical
                        coordinate reference system of raster data
rayleigh_test           Rayleigh Test of Circular Uniformity
relative_rotation       Relative rotation between two rotations
roll_circstats          Apply Rolling Functions using Circular
                        Statistics
rolling_test            Apply Rolling Functions using Circular
                        Statistical Tests for Uniformity
rolling_test_dist       Apply Rolling Functions using Circular
                        Statistics
rose                    Rose Diagram
rose_geom               Lines and fans in rose diagram
rose_stats              Show Average Direction and Spread in Rose
                        Diagram
rotation_Q4             Rotation of a vector by a quaternion
san_andreas             Example stress data for tangentially displaced
                        plate boundary
spec_atan               Quadrant-specific inverse of the tangent
spherical_angle         Angle along great circle on spherical surface
stress2grid             Spatial interpolation of SHmax
stress_analysis         Quick analysis of a stress data set
stress_colors           Color palette for stress regime
stress_paths            Theoretical Plate Tectonic Stress Paths
superimposed_shmax      SHmax direction resulting from multiple plate
                        boundaries
tectonicr.colors        Colors for input variables
tibet                   Example stress data for inward-moving displaced
                        plate boundary
vcross                  Vector cross product
vonmises                The von Mises Distribution
watson_test             Watson's U^2 Test of Circular Uniformity
weighted_rayleigh       Weighted Goodness-of-fit Test for Circular Data
