Vowel Covariation Tools
Permutation test of pairwise correlations
Apply Lobanov 2.0 normalisation
Test optimal number of MDS dimensions.
nzilbb.vowels: Vowel Covariation Tools
Flip PC loadings
PCA contribution plots
PCA with confidence intervals and null distributions
Run permutation test on PCA analysis.
Plot of correlation counts from correlation_test object
Plot distribution of correlations from correlation_test object
Plot PC index loadings from pca_test object.
Plot mds_test() results
Plot Scores from Significant PCs Against PCA Input
Plot PC loadings in vowel space
Create plot from permutation_test().
Create plot of variances explained from pca_test object
Plot vowel space for speaker or speakers.
Summary function for correlation test object. Set alpha to change sign...
Tools to support research on vowel covariation. Methods are provided to support Principal Component Analysis workflows (as in Brand et al. (2021) <doi:10.1016/j.wocn.2021.101096> and Wilson Black et al. (2023) <doi:10.1515/lingvan-2022-0086>).
Useful links