datasets (version 3.2.1)

rock: Measurements on Petroleum Rock Samples

Description

Measurements on 48 rock samples from a petroleum reservoir.

Usage

rock

Arguments

Format

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

Source

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

Details

Twelve core samples from petroleum reservoirs were sampled by 4 cross-sections. Each core sample was measured for permeability, and each cross-section has total area of pores, total perimeter of pores, and shape.