rock

<p>Measurements on 48 rock samples from a petroleum reservoir.</p>

datasets

R-core R-core@R-project.org

The R Datasets Package

rock function

<p>A data frame with 48 rows and 4 numeric columns.</p>
<p></p><table><tr><td>
        [,1] </td>
<td> area  </td>
<td> area of pores space, in pixels
        out of 256 by 256 </td>
</tr><tr><td>
        [,2] </td>
<td> peri  </td>
<td> perimeter in pixels </td>
</tr><tr><td>
        [,3] </td>
<td> shape </td>
<td> perimeter/sqrt(area) </td>
</tr></table>

rock: Measurements on Petroleum Rock Samples

Description

Usage

Arguments

Format

Details

[,1]	area	area of pores space, in pixels out of 256 by 256
[,2]	peri	perimeter in pixels
[,3]	shape	perimeter/sqrt(area)