A wrapper for the na.omit and na.fail function for fdata object
Source:R/na.omit.fdata.R
na.omit.fdata.Rdna.fail returns the object if it does not contain any
missing values, and signals an error otherwise. na.omit returns the object
with incomplete cases removed.
If na.omit.fdata removes cases, the row numbers of the cases form the
"na.action" attribute of the result, of class "omit", see generic
function na.omit.