Information Technology Reference
In-Depth Information
Size of the symbol used in pixel colouring Default
is 0.30.
pred.region.symbol.size
Vector for specifying the colours of the different
prediction regions.
region.colours
Logical TRUE or FALSE. If TRUE the sample points
(rows of X ) are labelled according to row names
of X .
sample.labels
A two-component vector. The first element specifies
the character size of sample labels and the second
element the character size of the category levels.
Default is c(0.65, 0.65) .
text.size
Determines the x-coordinates of a grid overlaying the
biplot space. Defaults to 0.05.
x.grid
Determines the y-coordinates of a grid overlaying the
biplot space. Defaults to 0.05.
y.grid
Value
The output of MCAbipl is a graph of the desired biplot: when mca.variant =
"indicator" the three biplots discussed in Section 8.2 are produced, while
mca.variant = "Burt" or "MCA" leads to the biplot discussed in Section 8.3
or 8.4 respectively. In addition, setting prediction.regions = TRUE together
with mca.variant = "Burt" or "MCA" produces the prediction regions associated
Gender
Hair
Jeremy
George
Alisdair
Dark
Ivor
Male
Grey*Brown
Harriet
England
Jane
Manual
Scotland
Wales
Education
Female
Clerical*Professional
University*Postgrad
Myfanwy
Fair
Work
School
Region
Figure 8.14
Similar to Figure 8.13 but with shift of origin.
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