ultrapolaRplot: Plotting Ultrasound Tongue Traces
Plots traced ultrasound tongue imaging data according to a polar coordinate system.
There is currently support for plotting means and standard deviations of each category's trace;
Smoothing Splines Analysis of Variance (SSANOVA) could be implemented as well. The origin of the
polar coordinates may be defined manually or automatically determined based on different
algorithms.
Points for each category can be split into two groups (anterior and posterior) at the point of
maximum curvature of each trace. User can specify rays to intersect various parts of the
tongue; intersections along these rays serve as input for a pairwise t-test to measure
significant contrasts between segments.
Currently 'ultrapolaRplot' supports ultrasound tongue imaging trace data from 'UltraTrace'
(<https://github.com/SwatPhonLab/UltraTrace>). 'UltraTrace' is capable of importing data from
Articulate Instruments AAA.
'read_textgrid.R' is required for opening TextGrids to determine category and alignment
information of ultrasound traces.
| Version: |
0.2.1 |
| Depends: |
R (≥ 4.1.0) |
| Imports: |
RColorBrewer, tibble, rjson, ggplot2, Cairo, purrr, plyr, tidyr, readr, stringr, ggsignif, ggpubr, car, rstatix, vegan |
| Published: |
2026-04-24 |
| DOI: |
10.32614/CRAN.package.ultrapolaRplot |
| Author: |
Yana Outkin [aut, cre],
Jonathan Washington [aut] |
| Maintainer: |
Yana Outkin <youtkin1 at swarthmore.edu> |
| License: |
GPL-3 |
| NeedsCompilation: |
no |
| CRAN checks: |
ultrapolaRplot results |
Documentation:
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