| rock-MASS {MASS} | R Documentation |
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.
data(rock)
A data frame with 48 rows and 4 numeric columns.
area | area of pores space, in pixels out of 256 by 256 |
peri | perimeter in pixels |
shape | perimeter/sqrt(area) |
perm | permeability in milli-Darcies |
Data from BP Research, image analysis by Ronit Katz, U. Oxford.
Katz, R. (1995) Spatial Analysis of Pore Images. D.Phil. thesis, Department of Statistics, University of Oxford.
Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.