\name{nP}
\title{Get number of PCs...}
\usage{nP(object, ...)}
\description{Get number of PCs}
\value{Number of PCs}
\alias{nP}
\alias{nP,pcaRes-method}
\author{Henning Redestig}
\arguments{\item{object}{pcaRes object}
\item{...}{not used}}