correlation_test        Permutation test of pairwise correlations
lobanov_2               Apply Lobanov 2.0 normalisation
mds_test                Test optimal number of MDS dimensions.
onze_intercepts         Speaker random intercepts from GAMMs for 100
                        ONZE speakers
onze_intercepts_full    Speaker random intercepts for 418 ONZE speakers
onze_vowels             Monophthong data for random sample of speakers
                        from the ONZE corpus
onze_vowels_full        Monophthong data for speakers from the ONZE
                        corpus
pc_flip                 Flip PC loadings
pca_contrib_plot        PCA contribution plots
pca_rotate_2d           Manually rotate two PCs around the origin
pca_rotate_procrustes   Apply Procrustes rotation to PCA loadings and
                        scores.
pca_test                PCA with confidence intervals and null
                        distributions
permutation_test        Run permutation test on PCA analysis.
plot_correlation_counts
                        Plot of correlation counts from
                        'correlation_test' object
plot_correlation_magnitudes
                        Plot distribution of correlations from
                        'correlation_test' object
plot_loadings           Plot PC index loadings from 'pca_test' object.
plot_mds_test           Plot 'mds_test()' results
plot_pc_input           Plot Scores from Significant PCs Against PCA
                        Input
plot_pc_vs              Plot PC loadings in vowel space
plot_permutation_test   Create plot from 'permutation_test()'.
plot_procrustes_loadings
                        Plot loadings with confidence bands from
                        'procrustes_loadings()'
plot_variance_explained
                        Create plot of variances explained from
                        'pca_test' object
plot_vowel_space        Plot vowel space for speaker or speakers.
procrustes_loadings     Generate distribution of (index) loadings using
                        the bootstrap and Procrustes rotation.
qb_intervals            Formant and amplitude for intervals of QuakeBox
                        monologues
qb_vowels               Formants from QuakeBox 1
sim_matrix              Similarity matrix from online perception test.
summary.correlation_test
                        Summary function for correlation test object.
                        Set alpha to change significance level.
