abs.error.pred(fit, lp=NULL, y=NULL) ## S3 method for class 'abs.error.pred': print(x, ...)
lm
or
ols
that contains a
y
vector
(i.e., you should have specified
y=TRUE
to the fitting function) unless
the
y
argument is given to
abs.error.pred
. If you do not specify
the
lp
argument,
fit
must contain
fitted.values
or
linear.predictors
. You must specify
fit
or both of
lp
and
y
.
fit
is not given
fit
(with
y=TRUE
in effect)
is not given
abs.error.pred
abs.error.pred
(used by
print.abs.error.pred
)
containing two matrices:
differences
and
ratios
.
Frank Harrell
Department of Biostatistics
Vanderbilt University School of Medicine
f.harrell@vanderbilt.edu
Schemper M (2003): Stat in Med 22:2299-2308.
set.seed(1) # so can regenerate results x1 <- rnorm(100) x2 <- rnorm(100) y <- exp(x1+x2+rnorm(100)) f <- lm(log(y) ~ x1 + poly(x2,3), y=TRUE) abs.error.pred(lp=exp(fitted(f)), y=y) rm(x1,x2,y,f)