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 model selection and model averaging with support for a
wide range of statistical models. Automated model selection through
subsets of the maximum model, with optional constraints for model
inclusion. Averaging of model parameters and predictions based on
model weights derived from information criteria (AICc and alike)
or custom model weighting schemes.

Kamil Barto

MuMIn

Multi-Model Inference

Kamil Bartoń

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