Vowel Covariation Tools

---

Documentation for package ‘nzilbb.vowels’ version 0.4.1

• DESCRIPTION file.
• Package NEWS.

Help Pages

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
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
pc_flip	Flip PC loadings
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.