# Analyzing the Orientation of Maximum Horizontal Stress

## Documentation for package ‘tectonicr’ version 0.2.95

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

## Help Pages

A C D E G H I K L M N O P Q R S T V W

## -- A --

abs_vel | Absolute Plate Velocity
angle-conversion | Degrees to Radians
angle_vectors | Angle Between Two Vectors
atan2d_spec | Quadrant-specific inverse of the tangent
atan2_spec | Quadrant-specific inverse of the tangent
axes | Plot axes

## -- C --

cartesian_to_geographical | Coordinate Transformations
cartesian_to_spherical | Coordinate Transformations
circle_stats | Summary Statistics of Circular Data
circular_dispersion | Circular distance and dispersion
circular_dispersion_boot | Bootstrapped estimates for circular dispersion
circular_distance | Circular distance and dispersion
circular_IQR | Summary Statistics of Circular Data
circular_mean | Summary Statistics of Circular Data
circular_median | Summary Statistics of Circular Data
circular_quantiles | Summary Statistics of Circular Data
circular_sd | Summary Statistics of Circular Data
circular_sd_error | Standard Error of Mean Direction of Circular Data
circular_var | Summary Statistics of Circular Data
compact_grid | Compact smoothed stress field
confidence | Confidence Interval around the Mean Direction of Circular Data
confidence_angle | Confidence Interval around the Mean Direction of Circular Data
confidence_interval | Confidence Interval around the Mean Direction of Circular Data
conjugate_Q4 | Conjugation of a Quaternion
coordinates | Coordinate Transformations
coordinates2 | Coordinate Transformations
coordinate_mod | Coordinate Correction
cpm_models | Global model of current plate motions

## -- D --

deg2rad | Degrees to Radians
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
distance_from_pb | Distance from plate boundary
distance_mod | Normalize angular distance on a sphere distance
distroll_circstats | Apply Rolling Functions using Circular Statistics
distroll_confidence | Apply Rolling Functions using Circular Statistics
distroll_dispersion | Apply Rolling Functions using Circular Statistics
distroll_dispersion_sde | Apply Rolling Functions using Circular Statistics
dist_greatcircle | Distance between points
dvm | The von Mises Distribution

## -- E --

earth_radius | Earth's radius in km
equivalent_rotation | Equivalent rotation
est.kappa | Concentration parameter of von Mises distribution
eulerpole_greatcircles | Theoretical Plate Tectonic Stress Paths
eulerpole_loxodromes | Theoretical Plate Tectonic Stress Paths
eulerpole_paths | Theoretical Plate Tectonic Stress Paths
eulerpole_smallcircles | Theoretical Plate Tectonic Stress Paths
euler_pole | Euler pole object
euler_to_Q4 | Quaternion from Euler angle-axis representation for rotations

## -- G --

geographical_to_cartesian | Coordinate Transformations
geographical_to_PoR | Conversion between spherical PoR to geographical coordinate system
geographical_to_PoR_quat | Conversion between PoR to geographical coordinate system using quaternions
geographical_to_PoR_raster | Conversion between PoR to geographical coordinate reference system of raster data
geographical_to_PoR_sf | Conversion between PoR to geographical coordinates of spatial data
geographical_to_spherical | Coordinate Transformations
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

## -- H --

haversine | Angle along great circle on spherical surface

## -- I --

iceland | Example stress data for outward-moving displaced plate boundary
is.euler | Check if object is euler.pole
is.Q4 | Check if object is quaternion

## -- K --

kuiper_test | Kuiper Test of Circular Uniformity

## -- L --

latitude_modulo | Coordinate Correction
lines_azimuths | Extract azimuths of line segments
line_azimuth | Extract azimuths of line segments
longitude_modulo | Coordinate Correction

## -- M --

mean_resultant_length | Mean Resultant Length
model_shmax | Theoretical Direction of Maximum Horizontal Stress in the geographical reference system.

## -- N --

normalize_Q4 | Quaternion normalization
norm_chisq | Normalized Chi-Squared Test for Circular Data
nuvel1 | NUVEL-1 Global model of current plate motions
nuvel1_plates | Plate Boundaries on the Earth

## -- O --

orthodrome | Angle along great circle on spherical surface

## -- P --

pb2002 | Global model of current plate motions
plates | Plate Boundaries on the Earth
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
PoR_to_geographical | Conversion between spherical PoR to geographical coordinate system
PoR_to_geographical_quat | Conversion between PoR to geographical coordinate system using quaternions
PoR_to_geographical_raster | Conversion between PoR to geographical coordinate reference system of raster data
PoR_to_geographical_sf | Conversion between PoR to geographical coordinates of spatial data
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
pvm | The von Mises Distribution

## -- Q --

Q4_to_euler | Euler angle/axis from quaternion
quantise_wsm_quality | Numerical values to World Stress Map Quality Ranking
quaternion | Relative rotation between two rotations
quick_plot | Plotting stress analysis results

## -- R --

rad2deg | Degrees to Radians
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
rolling_test | Apply Rolling Functions using Circular Statistical Tests for Uniformity
rolling_test_dist | Apply Rolling Functions using Circular Statistics
roll_circstats | Apply Rolling Functions using Circular Statistics
roll_confidence | Apply Rolling Functions using Circular Statistical Tests for Uniformity
roll_dispersion | Apply Rolling Functions using Circular Statistical Tests for Uniformity
roll_dispersion_CI | Apply Rolling Functions using Circular Statistical Tests for Uniformity
roll_dispersion_sde | Apply Rolling Functions using Circular Statistical Tests for Uniformity
roll_normchisq | Apply Rolling Functions using Circular Statistical Tests for Uniformity
roll_rayleigh | Apply Rolling Functions using Circular Statistical Tests for Uniformity
rose | Rose Diagram
rose_fan | Lines and fans in rose diagram
rose_geom | Lines and fans in rose diagram
rose_line | Lines and fans in rose diagram
rose_stats | Show Average Direction and Spread in Rose Diagram
rotation | Relative rotation between two rotations
rotation_Q4 | Rotation of a vector by a quaternion
rvm | The von Mises Distribution

## -- S --

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
spherical_to_cartesian | Coordinate Transformations
spherical_to_geographical | Coordinate Transformations
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

## -- T --

tectonicr.colors | Colors for input variables
tibet | Example stress data for inward-moving displaced plate boundary

## -- V --

vcross | Vector cross product
vincenty | Angle along great circle on spherical surface
vonmises | The von Mises Distribution

## -- W --

watson_test | Watson's U^2 Test of Circular Uniformity
weighted_rayleigh | Weighted Goodness-of-fit Test for Circular Data