getVarCov.sitar

an object inheriting from class <code>sitar</code>.

getVarCov method for <code>sitar</code> objects, based on <code>getVarCov.lme</code>.

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.

getVarCov.sitar: Extract variance-covariance matrix for SITAR models

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