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sitar
Growth curve analysis
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Install
install.packages('sitar')
Monthly Downloads
769
Version
1.1.0
License
GPL (>= 2)
Issues
2
Pull Requests
0
Stars
13
Forks
2
Repository
https://github.com/statist7/sitar
Maintainer
Tim Cole
Last Published
June 19th, 2018
Functions in sitar (1.1.0)
Search functions
cLMS
LMS conversion to and from z-scores
recalib
Recalibrate x, y data using SITAR random effects
sitar
Fit SITAR growth curve model
print.sitar
Print SITAR model
summary.sitar
Create summary of SITAR model
timegap
Select equally spaced ages from a vector of ages
z2cent
Express z-scores as centile character strings for plotting
print.summary.sitar
Print summary of SITAR model
velout
Identify outliers with abnormal velocity in growth curves
subsample
Sample from SITAR dataset
ukwhopt
UK-WHO growth reference including preterm
uk90
UK 1990 growth reference
who06
The WHO 2006 growth standard
xaxsd
Par args xaxs and yaxs option d
xyadj
Adjust x and y variables for SITAR random effects
sitar-package
SITAR (SuperImposition by Translation And Rotation) growth curve analysis
codeplot
Plot and zap velocity outliers in growth curves
anova.sitar
Compare Likelihoods of Fitted SITAR Objects
dfpower
Tabulate BIC of SITAR models by degrees of freedom and xy power transformations
LMS2z
Convert to/from measurement from/to z-score with growth reference
dfset
Find degrees of freedom for a natural spline curve to minimise BIC or AIC
BICadj
Ways to compare SITAR models for fit
berkeley
The Berkeley Child Guidance Study
LMSfit
Estimate LMS curves from tabulated growth reference centiles
getData.sitar
Extract elements of fitted SITAR models
ifun
Invert an expression defining a data transformation
mplot
Plot multiple growth curves
bupdate
Update the b fixed effect to minimise the b-c random effect correlation
plot.sitar
Plot SITAR model
pdLMS
Plot frequency distributions(s) for given L, M and S values in LMS method
plotclean
Plot multiple growth curves to identify outliers
funcall
Function call with optional inverse
getPeakTrough
Identify peaks and troughs of curve
heights
Serial heights measured in 12 girls
predict.sitar
Predict SITAR model