Format aesthetics for the supplementary (new) biplot samples

This function allows formatting changes to new samples.

newsamples (bp,  col = "darkorange1", pch = 1, cex = 1, label = FALSE,
label.name = NULL, label.col = NULL,label.cex = 0.75, label.side = "bottom", 
label.offset = 0.5, connected = FALSE, connect.col = "black", connect.lty=1, 
connect.lwd=1)

Arguments

bp

an object of class biplot.

col

the colour(s) for the new samples, with default darkorange1.

pch

the plotting character(s) for the new samples, with default 1.

cex

the character expansion(s) for the new samples, with default 1.

label

a logical value indicating whether new samples should be labelled or not, with default FALSE.

label.name

the label names for the new samples.

label.col

a vector of the same length as the number of new samples containing the colour(s) for the labels of the new samples, with default the colour of the sample points.

label.cex

the label text expansion(s) for the new samples, with default 0.75.

label.side

the side at which the label of the plotted point appears, with default bottom. Note that unlike the argument pos in text(), options are "bottom", "left", "top","right" and not 1, 2, 3, 4.

label.offset

the offset of the label from the plotted point. See ?text for a detailed explanation of the argument offset.

connected

a logical value indicating whether samples are connected in order of rows of the data matrix, with default FALSE.

connect.col

the colour of the connecting line, with default black.

connect.lty

the line type of the connecting line, with default 1.

connect.lwd

the line width of the connecting line, with default 1.

Value

The object of class biplot will be appended with a list called newsamples containing the following elements:

col

the colour(s) of the new samples.

pch

the plotting character(s) of the new samples.

cex

the character expansion(s) of the plotting character(s) of the new samples.

label

a logical value indicating whether new samples are labelled.

label.col

the label colours of the new samples.

label.cex

the label text expansions of the new samples.

label.side

the side at which the label of the plotted point appears.

label.offset

the offset of the label from the plotted point.

connected

a logical value indicating whether new samples are connected.

connect.col

the colour of the connecting line.

connect.lty

the line type of the connecting line.

connect.lwd

the line width of the connecting line.

See also

biplot, samples

Examples

biplot(data = iris[1:145,]) |> PCA() |> samples(col = "grey") |>
interpolate(newdata = iris[146:150,]) |> newsamples(col = rainbow(6), pch=15) |> plot()