# Polynomial component of inertia in row and column spaces

### Description

This function allows the analyst to compute the contribution of the polynomial components to the inertia (chi-squared or tau).
The ordered variable should be the both row and column variables that are transformed by polynomials.
The polynomial components are the row and column polynomial components.
The given input matrix is the Z matrix of generalised correlations from the bivariate moment decomposition.
It is called by `CAvariants`

when `catype="DOCA"`

or `catype = "DONSCA"`

.

### Usage

1 |

### Arguments

`Z` |
The matrix of generalised correlations between the polynomial axes. |

### Value

The value returned is the matrix

`comps ` |
The matrix of the polynomial component of inertia. |

### Note

This function belongs to the `R`

object class called `cacorporateplus`

.

### Author(s)

Rosaria Lombardo and Eric J. Beh

### References

Beh EJ and Lombardo R 2014 Correspondence Analysis: Theory, Practice and New Strategies. John Wiley & Sons.