Information Technology Reference
In-Depth Information
Figure 5.23
Back-projection prediction biplot axis for the original variable
Y
.
A number of arguments are specific to
Nonlinbipl
and need special consideration.
Arguments
The distance function for calculating the
D
matrix. In the current
implementation, one of
"Pythagoras"
,
"Clark"
or
"SqrtL1"
. Can easily be extended to any qualifying distance
metric, as described below. Default is
"Pythagoras"
.
dist
Default is 25. A larger value (100 or 200) results in better-looking
nonlinear biplot axes, but slows down the construction when
prediction.type = "normal"
is chosen.
num.points
One of
"circle"
,
"normal"
or
"back"
. Default is
"circle"
.
prediction.type
Scaling factor incorporated in graphical interpolation. Default is
FALSE. See discussion below.
scale.axes
If set to TRUE when
dist = "Pythagoras"
,sample
predictions are obtained as with
PCAbipl
. Should be set to
FALSE for all other distance metrics.
straight
