simplify.formula

expand.formula

<code>simplify.formula</code> rewrites a <code>formula</code> into shorthand notation.
Currently only the factor crossing operator <code>*</code> is applied, so an
expanded expression such as <code>a+b+a:b</code> becomes <code>a*b</code>.
<code>expand.formula</code> does the opposite, additionally expanding other
expressions, i.e. all nesting (<code>/</code>), grouping and <code>^</code>.

manip

Formula manipulation

Tools for performing model selection and model averaging. Automated
model selection through subsetting the maximum model, with optional
constraints for model inclusion. Model parameter and prediction
averaging based on model weights derived from information criteria
(AICc and alike) or custom model weighting schemes.

Kamil Barto

MuMIn

Multi-Model Inference

Formula manipulation function

<dl> <dt>x</dt>
<dd>a <code>formula</code> or an object from which it can be extracted (such as
 a fitted model object).</dd></dl>

Arguments

Author

Manipulate model formulas — Formula manipulation

<dl>

 <dt>x</dt>
<dd>a <code>formula</code> or an object from which it can be extracted (such as
 a fitted model object).</dd>

</dl>

Formula manipulation: Manipulate model formulas

Description

Usage

Arguments

Author

See Also

Examples