Information Technology Reference
In-Depth Information
Arguments with a specific meaning in
CATPCAbipl
Xcat
Required argument. An
n
×
p
data matrix where each
column represents a categorical variable, e.g.
Table 8.1.
factor.type
p
-vector with elements either
"nom"
or
"ord"
specifying whether categorical variable is nominal
or ordinal. If
factor.type
is specified as
"ord"
then it is assumed that the levels are ordered as 1,
2, 3,
...
and that the corresponding column of
Xcat
has been specified to be ordered.
drawbagplots
NULL or character vector specifying the groups for
which
α
-bags are to be drawn.
calibration.pch
Integer specifying plotting symbol for CLPs. Defaults
to 16.
calibration.col
Colour to use for CLPs.
calibration.size
Size of plotting symbols representing the CLPs.
Defaults to 1.
calibration.label.col
Colour to use for CLP label.
calibration.label.offset
Used together with arguments
calibration.label.pos
to optimize placement
of CLP labels. A numerical value controlling the
offset from the position specified by
calibration.label.pos
. Default is no offset.
Character vector defining the groups.
class.vec
Vector of same size as
class.vec
specifying the
colour of the bag drawn for each class.
class.cols
Vector of same size as
class.vec
specifying the
plotting character to be used when a convex hull is
to be drawn.
class.pch
An integer value controlling placement of a CLP
label: 1
=
below, 2
=
to left, 3
=
above and 4
=
to right of specified coordinates.
calibration.label.pos
Numerical value specifying size of a CLP label.
Defaults to 1.
calibration.label.size
Convergence criterion in quantifications step (8.18).
Defaults to 0.000001.
epsilon
Determines the y-coordinates of a grid overlaying the
biplot space. Defualts to 0.05.
ID
Logical TRUE or FALSE for specifying if sample
points are to be labelled. Default is FALSE.
label.samples
Vector of same size as
class.vec
specifying the
line type to be used in drawing the bag for
each class.
line.type.bags
Controlling colouring of CLPs associated with
nominal categories.
nom.col
