Nothing

```
designMatrix = function(bf, ...){
model = bf@numerator[[1]]
if( !inherits(model, "BFlinearModel") ) stop("Model matrix not defined for this model type.")
designMatrixJZS_LM(bf, ...)
}
designMatrixJZS_LM = function(bf, ...){
model = bf@numerator[[1]]
data = bf@data
dataTypes = model@dataTypes
formula = formula(model@identifier$formula)
checkFormula(formula, data, analysis = "lm")
factors = fmlaFactors(formula, data)[-1]
nFactors = length(factors)
if( nFactors == 0 ){
X = matrix(1,nrow(data),1)
gMap = c(intercept=NA)
}else{
# Remove "as.matrix" when sparse matrix support is added
X = as.matrix(fullDesignMatrix(formula, data, dataTypes))
gMap = createGMap(formula, data, dataTypes)
X = cbind(1,X)
gMap = c(intercept=NA, gMap)
}
attr(X,"gMap") = gMap
return(X)
}
#' Design matrices for Bayes factor linear models analyses.
#'
#' This function returns the design matrix used for computation of the Bayes factor
#' for the numerator of a \code{BFBayesFactor} object. There must not be more
#' than one numerator in the \code{BFBayesFactor} object.
#' @param object a BayesFactor object with a single numerator
#' @param ... arguments passed to and from related methods
#' @return Returns the design matrix for the corresponding model. The 'gMap' attribute of the returned
#' matrix contains the mapping from columns of the design matrix to g parameters
#' @export
#' @docType methods
#' @rdname model.matrix-methods
#' @aliases model.matrix,BFBayesFactor
#' @references Rouder, J. N., Morey, R. D., Speckman, P. L., Province, J. M., (2012)
#' Default Bayes Factors for ANOVA Designs. Journal of Mathematical
#' Psychology. 56. p. 356-374.
#' @examples
#' ## Gets the design matrix for a simple analysis
#' data(sleep)
#'
#' bf = anovaBF(extra ~ group + ID, data = sleep, whichRandom="ID", progress=FALSE)
#' X = model.matrix(bf)
#'
#' ## Show dimensions of X (should be 20 by 12)
#' dim(X)
setMethod('model.matrix', signature(object = "BFBayesFactor"),
function(object, ...){
if(length(object)>1) stop("Must specify single model.")
designMatrix(object, ...)
}
)
#' @rdname model.matrix-methods
#' @aliases model.matrix,BFBayesFactor
setMethod('model.matrix', signature(object = "BFBayesFactorTop"),
function(object, ...){
if(length(object)>1) stop("Must specify single model.")
designMatrix(as.BFBayesFactor(object), ...)
}
)
```

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