Provides robust compositional biplots.

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`x` |
object of class ‘factanal’ |

`...` |
... |

The robust compositional biplot according to Aitchison and Greenacre (2002), computed from resulting (robust) loadings and scores, is performed.

The robust compositional biplot.

M. Templ, K. Hron

Aitchison, J. and Greenacre, M. (2002). Biplots of compositional
data. *Applied Statistics*, **51**, 375-392. \

Filzmoser, P., Hron, K., Reimann, C. (2009) Principal Component Analysis for
Compositional Data with Outliers. *Environmetrics*, **20** (6),
621–632.

`pfa`

1 2 3 | ```
data(expenditures)
res.rob <- pfa(expenditures, factors=2, scores = "regression")
biplot(res.rob)
``` |

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