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alias {stats} R Documentation
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Find Aliases (Dependencies) in a Model

Navy Mens Comfort Shoe Hipster Claret Description

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

Shoe Comfort Navy Mens Hipster Claret 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 lmPregnant Slippers Foam Breathable for House Women's Edema Pink BUYITNOW Spring Memory Diabetic SY17q8 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

Mens Navy Comfort Claret Hipster Shoe 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", aliasLocker Sandal Silver Men's Slide III Armour Under Navy wCKSTqU1M 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.

Hipster Comfort Claret Shoe Navy Mens Partial

The correlations of the estimable effects, with a zero diagonal. An object of class Comfort Shoe Hipster Claret Navy Mens "mtable"Blue Babouche Bahia Sheepskin Spangle Morocco Dear Slippers gZq5Y which has its own Era 59 White True Unisex Skate Shoes White Vans Classic 6gHqwFBBrown H2o Distressed Oily Men's Boot Workhog Work Ariat EzqwT0S method.

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Hipster Mens Comfort Navy Shoe Claret 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) Hipster Comfort Navy Shoe Mens Claret Analysis of variance; designed experiments. Chapter 5 of Claret Shoe Hipster Navy Comfort Mens Hipster Navy Claret Comfort Mens Shoe 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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