sitar: Super Imposition by Translation and Rotation Growth Curve Analysis
Functions for fitting and plotting SITAR (Super Imposition by Translation And Rotation) growth curve models. SITAR is a shape-invariant model with a regression B-spline mean curve and subject-specific random effects on both the measurement and age scales. The model was first described by Lindstrom (1995) <doi:10.1002/sim.4780141807> and developed as the SITAR method by Cole et al (2010) <doi:10.1093/ije/dyq115>.
| Version: | 1.5.0 |
| Depends: | nlme, R (≥ 4.1.0) |
| Imports: | dplyr, forcats, ggplot2, glue, graphics, magrittr, methods, purrr, rlang, rsample, splines, splines2, stats, tibble, tidyr |
| Suggests: | knitr, rmarkdown |
| Published: | 2025-07-26 |
| DOI: | 10.32614/CRAN.package.sitar |
| Author: | Tim Cole  [cre,
aut, cph] |
| Maintainer: | Tim Cole <tim.cole at ucl.ac.uk> |
| BugReports: | https://github.com/statist7/sitar/issues |
| License: | GPL-2 | GPL-3 [expanded from: GPL (≥ 2)] |
| URL: | https://github.com/statist7/sitar |
| NeedsCompilation: | no |
| Materials: | README, NEWS |
| CRAN checks: | sitar results |
Documentation:
| Reference manual: | sitar.html , sitar.pdf |
| Vignettes: |
Fitting models with SITAR (source, R code) Optimal design for growth reference centiles (source, R code) |
Downloads:
| Package source: | sitar_1.5.0.tar.gz |
| Windows binaries: | r-devel: sitar_1.5.0.zip, r-release: sitar_1.5.0.zip, r-oldrel: sitar_1.5.0.zip |
| macOS binaries: | r-release (arm64): sitar_1.5.0.tgz, r-oldrel (arm64): sitar_1.5.0.tgz, r-release (x86_64): sitar_1.5.0.tgz, r-oldrel (x86_64): sitar_1.5.0.tgz |
| Old sources: | sitar archive |
Reverse dependencies:
| Reverse imports: | bsitar, nlive |
Linking:
Please use the canonical form https://CRAN.R-project.org/package=sitar to link to this page.