Preliminary Computations to Add Linear Regression Line
USAGE:
prepanel.lmline(x, y)
ARGUMENTS:
- x
-
a vector of predictor values.
- y
-
a vector of response values.
VALUE:
a list with components
- dx
-
the change in
x
of the fitted line.
Together with
dy
, this line is used in banking computations
to determine the aspect ratio of the Trellis plot.
- dy
-
the change in
y
of the line fitted line.
- xlim
-
a vector of length 2 giving the minimum and maximum values for the
x
coordinates on the plot, taking into account the original data
as well as the fitted line.
- ylim
-
similar to
xlim
, but dealing with the
y
coordinates of the original
data and the fit.