Description Usage Arguments Value Author(s) References See Also

This is a modified version of `cmdscale`

that uses the Lanczos
procedure (`slanczos`

) instead of `eigen`

. Called by
`smooth.construct.pco.smooth.spec`

.

1 | ```
cmdscale_lanczos(d, k = 2, eig = FALSE, add = FALSE, x.ret = FALSE)
``` |

`d` |
a distance structure as returned by |

`k` |
the maximum dimension of the space which the data are to be
represented in; must be in |

`eig` |
logical indicating whether eigenvalues should be returned. |

`add` |
logical indicating if the additive constant of Cailliez (1983) should be computed, and added to the non-diagonal dissimilarities such that the modified dissimilarities are Euclidean. |

`x.ret` |
indicates whether the doubly centred symmetric distance matrix should be returned. |

as `cmdscale`

David L Miller, based on code by R Core.

Cailliez, F. (1983). The analytical solution of the additive constant problem.
*Psychometrika*, 48, 343-349.

`smooth.construct.pco.smooth.spec`

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