interpolate {biplotEZ}

Interpolation of new samples

Description

Interpolation of new samples

Usage

interpolate(bp, newdata)

Arguments

bp

an object of class biplot obtained from preceding function biplot().

newdata

a new data set, similar in structure to the data set supplied to biplot() containing supplementary data points to be added on the biplot.

Value

Object of class PCA with the following elements:

X

matrix of the centered and scaled numeric variables.

Xcat

matrix of the categorical variables.

raw.X

original data.

na.action

vector of observations that have been removed.

center

TRUE or FALSE, whether X is centred.

scaled

TRUE or FALSE, whether X is scaled.

means

mean of each numerical variable.

sd

standard deviation of each numerical variable.

n

number of observations.

p

number of variables.

group.aes

vector of the same length as the number of rows in the data matrix for differentiated aesthetics for samples.

g.names

descriptive name to be used for group labels.

g

number of groups.

Title

title of the biplot to be rendered

Z

matrix with each row containing the details of the point to be plotted (i.e. coordinates).

Lmat

matrix for transformation to the principal components.

e.vects

vector indicating which principal components are plotted in the biplot.

ax.one.unit

one unit in the positive direction of each biplot axis.

Xnew.raw

newdata numerical variables.

Xnew

matrix of the centered and scaled new numeric variables.

Xnew.cat

matrix of the new categorical variables.

Znew

matrix of the coordinates of the newdata in the biplot.

Examples

biplot(data = iris[1:145,]) |> PCA() |> interpolate(newdata = iris[146:150,]) |> plot()