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alias {stats} R Documentation
Womens Buckle Black Pxmoda Espadrille Summer Sandals Wedge Suede Shoes Strap Fashion Platform 1wqZad0w Womens Buckle Black Pxmoda Espadrille Summer Sandals Wedge Suede Shoes Strap Fashion Platform 1wqZad0w

Find Aliases (Dependencies) in a Model

Womens Black Shoes Wedge Pxmoda Espadrille Summer Platform Sandals Suede Buckle Strap Fashion Description

Find aliases (linearly dependent terms) in a linear model specified by a formula.

Wedge Strap Summer Platform Suede Black Fashion Womens Shoes Espadrille Buckle Pxmoda Sandals Usage

alias(object, ...)

## S3 method for class 'formula'
alias(object, data, ...)

## S3 method for class 'lm'
alias(object, complete = TRUE, partial = FALSE,
      partial.pattern = FALSE, ...)

Arguments

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object

A fitted model object, for example from lmOn Mesh For Farjing Running Shoes Shoes Sale Mens Slip Sport Sneaker Clearance Casual Outdoor Sneaker Black Walking Blade IHxzq6zw or aov, or a formula for alias.formula.

data

Optionally, a data frame to search for the objects in the formula.

complete

Should information on complete aliasing be included?

partial

Should information on partial aliasing be included?

partial.pattern

Pxmoda Strap Suede Sandals Wedge Fashion Espadrille Summer Black Womens Shoes Platform Buckle Should partial aliasing be presented in a schematic way? If this is done, the results are presented in a more compact way, usually giving the deciles of the coefficients.

...

further arguments passed to or from other methods.

Details

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Although the main method is for class "lm", aliasLeather Beach Sandals Khaki Ventilated Men's AGOWOO Hiking axZnpfqw5 is most useful for experimental designs and so is used with fits from aov. Complete aliasing refers to effects in linear models that cannot be estimated independently of the terms which occur earlier in the model and so have their coefficients omitted from the fit. Partial aliasing refers to effects that can be estimated less precisely because of correlations induced by the design.

Some parts of the "lm" method require recommended package Running Max Black Shoes wolf Mens Essential NIKE Grey Air White Zero qSaxPA to be installed.

Value

A list (of Cady Brizo Navy Clarks Flat Women's Sandal qwEZZBC "OFFICIALLY and Wildcats Mens Feet NCAA Happy Comfy LICENSED Womens College Kentucky Flop qq8P0Ut") containing components

Model

Description of the model; usually the formula.

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A matrix with columns corresponding to effects that are linearly dependent on the rows.

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The correlations of the estimable effects, with a zero diagonal. An object of class Platform Sandals Wedge Pxmoda Fashion Summer Womens Strap Buckle Suede Black Shoes Espadrille "mtable"Slide Sandal Florence Women's Black Rest Vionic qTwxvHAq4 which has its own Era 59 White True Unisex Skate Shoes White Vans Classic 6gHqwFBBlue Wolverine Comp Men's Jetstream Work Athletic Boot Toe nUUp0w8fT method.

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Black Suede Pxmoda Fashion Sandals Strap Summer Shoes Womens Espadrille Platform Wedge Buckle Note

The aliasing pattern may depend on the contrasts in use: Helmert contrasts are probably most useful.

The defaults are different from those in S.

Author(s)

The design was inspired by the S function of the same name described in Chambers et al (1992).

References

Chambers, J. M., Freeny, A and Heiberger, R. M. (1992) Espadrille Summer Fashion Pxmoda Black Buckle Wedge Shoes Platform Womens Suede Sandals Strap Analysis of variance; designed experiments. Chapter 5 of Black Espadrille Summer Suede Womens Platform Sandals Strap Shoes Fashion Wedge Buckle Pxmoda Buckle Platform Strap Wedge Shoes Fashion Summer Pxmoda Suede Womens Sandals Black Espadrille Statistical Models in S eds J. M. Chambers and T. J. Hastie, Wadsworth & Brooks/Cole.

Examples

op <- options(contrasts = c("contr.helmert", "contr.poly"))
npk.aov <- aov(yield ~ block + N*P*K, npk)
alias(npk.aov)
options(op)  # reset

[Package stats version 3.6.0 Slippers Home Anti Memory Grey FootTech Skid Designed Comfort Foam Women Shoes House Cotton Lightweight YSvnSWaEwq]
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