This function is used in the main function `CAvariants`

when the input parameter is `catype = "NSCA"`

.
It calculates the singular value decomposition of the numerator of the Goodman-Kruskal tau index (index of predictability),
computes principal axes, coordinates, weights of rows and columns, total inertia (equal to the numerator of the tau index) and the rank of the matrix.

1 | ```
nscabasic(Xtable)
``` |

`Xtable` |
The two-way contingency table. |

This function belongs to the `R`

object class called `cabasicresults`

.

Rosaria Lombardo and Eric J. Beh

Beh EJ and Lombardo R 2014 Correspondence Analysis: Theory, Practice and New Strategies. John Wiley & Sons. Lombardo R Beh EJ Variants of Simple Correspondence Analysis. The R Journal (accepted).

1 2 |

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