[R] fGarch and is.na()

Hello, after loading package "fGarch" the function is.na.data.frame() is behaving different: > sessionInfo() R version 2.8.0 (2008-10-20) i386-pc-mingw32 locale: LC_COLLATE=English_United States.1252;LC_CTYPE=English_United States.1252;LC_MONETARY=English_United States.1252;LC_NUMERIC=C;LC_

[R] Weights argument in loess (stats)

Hello, I have a question concerning the weights argument of the loess function in the stats package. Do the weights correspond to multiplying the local regression equation by the weights or by the square root of the weights (like in lm). In "http://www.netlib.org/a/cloess.pdf"; page 7 it appears