Description Usage Arguments Details Value Author(s) References See Also Examples

Extract project index value vector from a PP3 object.

1 | ```
getPP3index(x, number)
``` |

`x` |
PP3 object to get indices from. |

`number` |
Identification number of solution. Optional |

If `number`

is missing then the whole projection index
vector is returned. If `number`

is specified then the
projection index associated with that identification number
is returned.

Either a vector of indices, or a single index, depending on whether
`number`

is not specified or it is, respectively.

G. P. Nason

Friedman, J.H. and Tukey, J.W. (1974) A projection pursuit algorithm
for exploratory data analysis. *IEEE Trans. Comput.*,
**23**, 881-890.

Jones, M.C. and Sibson, R. (1987) What is projection pursuit? (with discussion)
*J. R. Statist. Soc. A*, **150**, 1-36.

Nason, G. P. (1995) Three-dimensional projection pursuit.
*J. R. Statist. Soc. C*, **44**, 411-430.

Nason, G. P. (2001) Robust projection indices.
*J. R. Statist. Soc. B*, **63**, 551-567.

`getPP3loadings`

, `getPP3projdata`

,
`PP3many`

1 2 3 | ```
#
# See help for PP3many, this contains an example of using getPP3index.
#
``` |

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