CONTR

Do an F test with a given set of contrasts.

This is a core implementation of 'SAS' procedures for linear models - GLM, REG, ANOVA, TTEST, FREQ, and UNIVARIATE. Some R packages provide Type II and Type III SS. However, the results of nested and complex designs are often different from those of 'SAS'. Different results do not necessarily mean incorrectness. However, many want the same results as 'SAS'. This package aims to achieve that.
Reference: Littell RC, Stroup WW, Freund RJ (2002, ISBN:0-471-22174-0).

Kyun-Seop Bae

sasLM

'SAS' Linear Model

CONTR function

<dl> <dt>L</dt>
<dd>contrast matrix. Each row is a contrast.</dd> <dt>Formula</dt>
<dd>a conventional formula for a linear model</dd> <dt>Data</dt>
<dd>a <code>data.frame</code> to be analyzed</dd> <dt>mu</dt>
<dd>a vector of mu for the hypothesis L. The length should be equal to the row count of L.</dd>
 
</dl>

Arguments

Author

F Test with a Set of Contrasts — CONTR

<dl>

 <dt>L</dt>
<dd>contrast matrix. Each row is a contrast.</dd>

 <dt>Formula</dt>
<dd>a conventional formula for a linear model</dd>

 <dt>Data</dt>
<dd>a <code>data.frame</code> to be analyzed</dd>

 <dt>mu</dt>
<dd>a vector of mu for the hypothesis L. The length should be equal to the row count of L.</dd>
 
</dl>

CONTR: F Test with a Set of Contrasts

Description

Usage

Value

Arguments

Author

Details

See Also

Examples