Gunnels

<p>Presence/absence of gunnels (eels) at shoreline quadrats</p>

datasets

Datasets for the textbook Stat2: Modeling with Regression and ANOVA (second edition).
The package also includes data for the first edition, Stat2: Building Models for a World of Data
and a few functions for plotting diagnostics.

Robin Lock

Stat2Data

Datasets for Stat2

Gunnels function

<p>A data frame with 1592 observations on the following 10 variables.</p><table><tr><td>
    <code>Gunnel</code> </td>
<td> 1= gunnel present in the quadrat or 0=gunnel absent</td>
</tr><tr><td>
    <code>Time</code> </td>
<td> Minutes after midnight</td>
</tr><tr><td>
    <code>Fromlow</code> </td>
<td> Time in minutes from low tide</td>
</tr><tr><td>
    <code>Slope</code> </td>
<td> Slope (to nearest 10 degrees) perpendicular to waterline</td>
</tr><tr><td>
    <code>Rw</code> </td>
<td> Percentage cover in quadrat of rockweed/algae/plants</td>
</tr><tr><td>
    <code>Amphiso</code> </td>
<td> Density of crustacean food: 0=none to 4=high</td>
</tr><tr><td>
    <code>Subst</code> </td>
<td> Substratum: 1=solid rock, 2=rocky cobbles, 3=mixed pebbles/sand, 4=fine sand,</td>
</tr><tr><td>
    </td>
<td> 5=mud, 6=mixed mud/shell detritus, 7=cobbles on solid rock, 8=cobbles on mixed pebbles/sand,</td>
</tr><tr><td>
    </td>
<td> 9=cobbles on fine sand, 10=cobbles on mud, 11=cobbles on mixed mud/shell detritus,</td>
</tr><tr><td>
    </td>
<td> 12=cobbles on shell detritus, 13=shell detritus </td>
</tr><tr><td>
    <code>Pool</code> </td>
<td> Standing water deep?  1=yes or 2=no</td>
</tr><tr><td>
    <code>Water</code> </td>
<td> Standing water in the quadrat?  1=yes or 2=no</td>
</tr><tr><td>
    <code>Cobble</code> </td>
<td> Rocky cobbles? 1=yes or 2=no </td>
</tr></table>

Gunnels: Are Gunnels Present at Shoreline?

Description

Arguments

Format

Details

`Gunnel`	1= gunnel present in the quadrat or 0=gunnel absent
`Time`	Minutes after midnight
`Fromlow`	Time in minutes from low tide
`Slope`	Slope (to nearest 10 degrees) perpendicular to waterline
`Rw`	Percentage cover in quadrat of rockweed/algae/plants
`Amphiso`	Density of crustacean food: 0=none to 4=high
`Subst`	Substratum: 1=solid rock, 2=rocky cobbles, 3=mixed pebbles/sand, 4=fine sand,
	5=mud, 6=mixed mud/shell detritus, 7=cobbles on solid rock, 8=cobbles on mixed pebbles/sand,
	9=cobbles on fine sand, 10=cobbles on mud, 11=cobbles on mixed mud/shell detritus,
	12=cobbles on shell detritus, 13=shell detritus
`Pool`	Standing water deep? 1=yes or 2=no
`Water`	Standing water in the quadrat? 1=yes or 2=no
`Cobble`	Rocky cobbles? 1=yes or 2=no