rock


    Measurements on 48 rock samples from a petroleum reservoir.

datasets

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The R Datasets Package

rock function

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

Format

Data from BP Research, image analysis by Ronit Katz, U. Oxford.

rock: Measurements on Petroleum Rock Samples

Description

Usage

Arguments

Format

Source

Details

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