mackerel

<p>These data record the abundance of mackerel eggs off the coast of
north-western Europe, from a multi-country survey in 1992.</p>
<p>The variables are:</p><table class="table">
<tr><td><code>Density</code></td><td>egg density</td></tr>
<tr><td><code>mack.lat</code></td><td>latitude of sampling position</td></tr>
<tr><td><code>mack.long</code></td><td>longitude of sampling position</td></tr>
<tr><td><code>mack.depth</code></td><td>bottom depth</td></tr>
<tr><td><code>Temperature</code></td><td>surface temperature</td></tr>
<tr><td><code>Salinity</code></td><td>salinity</td></tr>
</table><p></p><p>
</p><p>Background to the survey and the data are provided by Watson et al. (1992), Priede and Watson (1993) and Priede et al (1995).  Borchers et al (1997) describe an analysis of the data.</p>

regression

smooth

This is software linked to the book
'Applied Smoothing Techniques for Data Analysis -
The Kernel Approach with S-Plus Illustrations' Oxford University Press.

Adrian Bowman

Smoothing Methods for Nonparametric Regression and Density
Estimation

mackerel function

<p>These data record the abundance of mackerel eggs off the coast of
north-western Europe, from a multi-country survey in 1992.</p>
<p>The variables are:</p><table class='table'>
<tr><td><code>Density</code></td><td>egg density</td></tr>
<tr><td><code>mack.lat</code></td><td>latitude of sampling position</td></tr>
<tr><td><code>mack.long</code></td><td>longitude of sampling position</td></tr>
<tr><td><code>mack.depth</code></td><td>bottom depth</td></tr>
<tr><td><code>Temperature</code></td><td>surface temperature</td></tr>
<tr><td><code>Salinity</code></td><td>salinity</td></tr>
</table>


<p>Background to the survey and the data are provided by Watson et al. (1992), Priede and Watson (1993) and Priede et al (1995).  Borchers et al (1997) describe an analysis of the data.</p>

mackerel: The abundance of mackerel eggs

Description

Arguments

`Density`	egg density
`mack.lat`	latitude of sampling position
`mack.long`	longitude of sampling position
`mack.depth`	bottom depth
`Temperature`	surface temperature
`Salinity`	salinity