# Investigating New Projection Pursuit Index Functions

## Documentation for package ‘spinebil’ version 1.0.4

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

## Help Pages

basis_matrix | Generate 2-d basis in directions i, j in n dimensions (i,j <= n)
basis_vector | Generate basis vector in direction i in n dimensions (i <= n)
cmassR | Matching index functions to the required format.
compare_smoothing | Compare traces with different smoothing options.
data_gen | Generate Synthetic Data with Various Structures
distance_dist | Collecting all pairwise distances between input planes.
distance_to_sp | Collecting distances between input planes and input special plane.
get_index_mean | Evaluate mean index value over n jittered views.
get_trace | Tracing the index over an interpolated planned tour path.
holesR | Matching index functions to the required format.
jitter_angle | Re-evaluate index after jittering the projection by an angle alpha.
jitter_points | Re-evaluate index after jittering all points by an amount alpha.
mine_index | Matching index functions to the required format.
mine_indexE | Matching index functions to the required format.
noise_gen | Generate Synthetic Noise
pipe_data | Generating a sample of points on a pipe
plot_rotation | Plot rotation traces of indexes obtained with profileRotation.
plot_smoothing_comparison | Plot the comparison of smoothing methods.
plot_trace | Plot traces of indexes obtained with 'get_trace'.
ppi_mean | Simulate and Summarize Projection Pursuit Index (PPI) Values
ppi_noise_threshold | Estimate the 95th Percentile of a Projection Pursuit Index Under Noise
ppi_samplesize_effect | Simulate Effect of Sample Size on Projection Pursuit Index Under Gaussian Noise
ppi_scale | Simulate and Compare Index Scale on Structured vs Noisy Data
profile_rotation | Test rotation invariance of index functions for selected 2-d data set.
scag_index | Matching index functions to the required format.
sin_data | Generating sine wave sample
spiral_data | Generating spiral sample
squint_angle_estimate | Estimating squint angle of 2-d structure in high-d dataset under selected index.
time_sequence | Time each index evaluation for projections in the tour path.