p2canon.object {dae} | R Documentation |

## Description of a p2canon object

### Description

An object of class `p2canon`

that contains information derived from two
`formulae`

using `projs.2canon`

.

### Value

A `list`

of class `p2canon`

. It has two components: `decomp`

and
`aliasing`

. The `decomp`

component iscomposed as follows:

It has a component for each component of `Q1`

.

Each of the components for `Q1`

is a `list`

;
each of these `lists`

has one component for each of
`Q2`

and a component `Pres`

.

Each of the `Q2`

components is a `list`

of three
components: `pairwise`

, `adjusted`

and `Qproj`

.
These components are based on an eigenalysis of the
relationship between the projectors for the parent `Q1`

and `Q2`

components.

Each `pairwise`

component is based on the nonzero
canonical efficiency factors for the joint decomposition of
the two parent projectors (see `proj2.eigen`

).

An `adjusted`

component is based on the nonzero
canonical efficiency factors for the joint decomposition of
the `Q1`

component and the `Q2`

component,
the latter adjusted for all `Q2`

projectors that have
occured previously in the `list`

.

The `Qproj`

component is the adjusted projector for the
parent `Q2`

component.

The `pairwise`

and `adjusted`

components have the
following components: `efficiencies`

, `aefficiency`

,
`mefficiency`

, `sefficiency`

, `eefficiency`

,
`xefficiency`

, `order`

and `dforthog`

– for details see `efficiency.criteria`

.

The `aliasing`

component is a data.frame decribing the aliasing between
terms corresponding to two `Q2`

projectors when estimated in subspaces
corresponding to a `Q1`

projector.

### Author(s)

Chris Brien

### See Also

`projs.2canon`

, `designAnatomy`

, `pcanon.object`

.

[Package

*dae* version 3.2-13

Index]