Numerical matrix with (or an object coercible to
such) with samples in rows and variables as columns. Also takes
<code>ExpressionSet</code> in which case the transposed expression
matrix is used.

object

For convenience one can pass a large matrix but only
use the variable specified as subset. Can be colnames or indices.

method

subset


Wrapper function for imputation methods based on nearest neighbour
clustering. Currently llsImpute only.


multivariate

Provides Bayesian PCA, Probabilistic PCA, Nipals PCA,
Inverse Non-Linear PCA and the conventional SVD PCA. A cluster
based method for missing value estimation is included for
comparison. BPCA, PPCA and NipalsPCA may be used to perform PCA
on incomplete data as well as for accurate missing value
estimation. A set of methods for printing and plotting the
results is also provided. All PCA methods make use of the same
data structure (pcaRes) to provide a common interface to the
PCA results. Initiated at the Max-Planck Institute for
Molecular Plant Physiology, Golm, Germany.

Henning Redestig

pcaMethods

A collection of PCA methods

nni function

Wrapper function for imputation methods based on nearest neighbour
clustering. Currently llsImpute only.

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nni: Nearest neighbour imputation

Description

Usage

Arguments

Value

Details

See Also

Examples