R: Super Imposition by Translation and Rotation Growth Curve Analysis

# Super Imposition by Translation and Rotation Growth Curve Analysis

## Documentation for package ‘sitar’ version 1.5.0

- DESCRIPTION file
- User guides, package vignettes and other documentation
- Package NEWS
- Package README

## Help Pages

sitar-package | SITAR (SuperImposition by Translation And Rotation) growth curve analysis
AICadj | Ways to compare SITAR models for fit
anova.sitar | Compare Likelihoods of Fitted SITAR Objects
apv_se | Bootstrap standard errors for SITAR peak velocity and age at peak velocity
berkeley | The Berkeley Child Guidance Study
BICadj | Ways to compare SITAR models for fit
bupdate | Update the b fixed effect to minimise the b-c random effect correlation
cdc2000 | The CDC 2000 growth reference
cLMS | LMS conversion to and from z-scores
codeplot | Plot and zap velocity outliers in growth curves
deren | Deren prevalence data on child thinness, overweight and obesity
dfpower | Tabulate BIC of SITAR models by degrees of freedom, fixed effects and xy power transformations
dfset | Find degrees of freedom for a natural spline curve to minimise BIC or AIC
diffid | Select equally spaced ages from a vector of ages
funcall | Function call with optional inverse
getCovariate.sitar | Extract elements of fitted SITAR models
getData.sitar | Extract elements of fitted SITAR models
getDV | Extract individual estimates of peak velocity and age at peak velocity
getL | Ways to compare SITAR models for fit
getPeak | Identify peak or trough on curve
getPeakTrough | Identify peak or trough on curve
getTakeoff | Identify peak or trough on curve
getTrough | Identify peak or trough on curve
getVarCov.sitar | Extract elements of fitted SITAR models
heights | Serial heights measured in 12 girls
ifun | Invert an expression defining a data transformation
iotf | IOTF international body mass index reference
lines.sitar | Plot SITAR model
LMS2z | Convert to/from measurement from/to z-score with growth reference
LMSfit | Estimate LMS curves from tabulated growth reference centiles
mplot | Plot multiple growth curves
n_agegp | Optimal design for growth reference centile studies
ob_convertr | Convert between IOTF, WHO and CDC prevalence rates for child thinness, overweight and obesity
ob_convertr2 | Convert between IOTF, WHO and CDC prevalence rates for child thinness, overweight and obesity
optimal_design | Optimal design for growth reference centile studies
pdLMS | Plot frequency distributions(s) for given L, M and S values in LMS method
plot.sitar | Plot SITAR model
plotclean | Plot multiple growth curves to identify outliers
plot_a | Plot SITAR model
plot_c | Plot SITAR model
plot_D | Plot SITAR model
plot_d | Plot SITAR model
plot_u | Plot SITAR model
plot_V | Plot SITAR model
plot_v | Plot SITAR model
predict.sitar | Predict SITAR model
print.sitar | Print SITAR model
print.summary.sitar | Print summary of SITAR model
recalib | Recalibrate x, y data using SITAR random effects
sitar | Fit SITAR growth curve model
subsample | Sample from SITAR dataset
summary.sitar | Create summary of SITAR model
timegap | Select equally spaced ages from a vector of ages
timegap.id | Select equally spaced ages from a vector of ages
uk90 | UK 1990 growth reference
ukwhopt | UK-WHO growth reference including preterm
ukwhoterm | UK-WHO growth reference omitting preterm data
update.sitar | Fit SITAR growth curve model
varexp | Ways to compare SITAR models for fit
velout | Identify outliers with abnormal velocity in growth curves
who06 | The WHO 2006 growth standard
who0607 | The WHO 2006 growth standard and WHO 2007 growth reference
xaxsd | Par args xaxs and yaxs option d
xyadj | Adjust x and y variables for SITAR random effects
yaxsd | Par args xaxs and yaxs option d
z2cent | Express z-scores as centile character strings for plotting
zapvelout | Plot and zap velocity outliers in growth curves
zLMS | LMS conversion to and from z-scores