con2tr
) and matrices produced by
predict.loess
(
mat2r
) to data frames for use by Trellis.
con2tr(obj) mat2tr(z)
x
,
y
and
z
as passed to
contour
con2tr
repeats the
x
and
y
components suitably to match the
vector
z
.
mat2tr
constructs
x
and
y
columns from the
dimnames
of
z
.