hatmatrix

<code>hatmatrix()</code> computes the weight diagrams (also known as
equivalent or effective kernels) for a local regression smooth.
Essentially, <code>hatmatrix()</code> is a front-end to <code>locfit()</code>,
setting a flag to compute and return weight diagrams, rather than the
fit.

smooth

Local regression, likelihood and density estimation methods as described in the 1999 book by Loader.

Andy Liaw

locfit

Local Regression, Likelihood and Density Estimation

Catherine Loader

Jiayang Sun

Lucent Technologies 

hatmatrix function

<dl> <dt>formula</dt>
<dd>model formula.</dd> <dt>dc</dt>
<dd>derivative adjustment (see <code>locfit.raw</code>)</dd> <dt>...</dt>
<dd>Other arguments to <code>locfit</code> and
<code>locfit.raw</code>.</dd>
</dl>

Arguments

Weight diagrams and the hat matrix for a local regression model. — hatmatrix

<dl>

 <dt>formula</dt>
<dd>model formula.</dd>

 <dt>dc</dt>
<dd>derivative adjustment (see <code>locfit.raw</code>)</dd>

 <dt>...</dt>
<dd>Other arguments to <code>locfit</code> and
<code>locfit.raw</code>.</dd>
</dl>

hatmatrix: Weight diagrams and the hat matrix for a local regression model.

Description

Usage

Value

Arguments

See Also