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sitar

Growth curve analysis

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Version

Install

install.packages('sitar')

Monthly Downloads

730

Version

1.0.10

License

GPL (>= 2)

Issues

2

Pull Requests

0

Stars

14

Forks

3

Maintainer

Tim Cole

Last Published

September 15th, 2017

Functions in sitar (1.0.10)

codeplot

Plot and zap velocity outliers in growth curves
predict.sitar

Predict SITAR model
velout

Identify outliers with abnormal velocity in growth curves
who06

The WHO 2006 growth standard
y2plot

Plot with two y axes
z2cent

Express z-scores as centile character strings for plotting
BICadj

Ways to compare SITAR models for fit
LMS2z

Convert to/from measurement from/to z-score with growth reference
mplot

Plot multiple growth curves
LMSfit

Estimate LMS curves from tabulated growth reference centiles
subsample

Sample from SITAR dataset
bupdate

Update the b fixed effect to minimise the b-c random effect correlation
print.sitar

Print SITAR model
plot.sitar

Plot SITAR model
getPeakTrough

Identify peaks and troughs of curve
print.summary.sitar

Print summary of SITAR model
summary.sitar

Create summary of SITAR model
sitar

Fit SITAR growth curve model
anova.sitar

Compare Likelihoods of Fitted SITAR Objects
cLMS

LMS conversion to and from z-scores
getData.sitar

Extract elements of fitted SITAR models
timegap

Select equally spaced ages from a vector of ages
recalib

Recalibrate x, y data using SITAR random effects
funcall

Function call with optional inverse
xaxsd

Par args xaxs and yaxs option d
xyadj

Adjust x and y variables for SITAR random effects
dfset

Find degrees of freedom for a natural spline curve to minimise BIC or AIC
sitar-package

SITAR (SuperImposition by Translation And Rotation) growth curve analysis
uk90

UK 1990 growth reference
heights

Serial heights measured in 12 girls
ifun

Invert an expression defining a data transformation
ukwhopt

UK-WHO growth reference including preterm
plotclean

Plot multiple growth curves to identify outliers
dfpower

Tabulate BIC of SITAR models by degrees of freedom and xy power transformations