residuals.nlmeStruct: Calculate nlmeStruct Residuals
Description
The residuals at level $i$ are obtained by subtracting the fitted
values at that level from the response vector. The fitted values at
level $i$ are obtained by adding together the contributions from
the estimated fixed effects and the estimated random effects at levels
less or equal to $i$ and evaluating the model function at the
resulting estimated parameters.Usage
## S3 method for class 'nlmeStruct':
residuals(object, level, conLin, \dots)
Value
if a single level of grouping is specified in level,
the returned value is a vector with the residuals at the desired
level; else, when multiple grouping levels are specified in
level, the returned object is a matrix with
columns given by the residuals at different levels.References
Bates, D.M. and Pinheiro, J.C. (1998) "Computational methods for
multilevel models" available in PostScript or PDF formats at
http://nlme.stat.wisc.edu