A Trellis dot-plot of the confidence intervals on the linear model
coefficients is generated, with a different panel for each
coefficient. Rows in the dot-plot correspond to the names of the
lm components of the lmList object used to produce
x. The lower and upper confidence limits are connected by
a line segment and the estimated coefficients are marked with a
"+".
This is based on function dotplot() from
package lattice.
an object inheriting from class "intervals.lmList",
representing confidence intervals and estimates for the coefficients
in the lm components of the lmList object used to
produce x.