Sampling of Projections
sample.vars.proj(ids.x.na, X, projection.function = NULL, normal.proj = T)
a vector of indices corresponding to NA in the given missingness pattern.
a matrix of the observed data containing missing values.
a function providing the user-specific projections.
a boolean, if TRUE, sample from the NA of the pattern and additionally from the non NA. If FALSE, sample only from the NA of the pattern.
a vector of variables corresponding to the projection.