Scallop abundance data

Description

The scallop data frame has 148 triplets concerning scallop abundance; based on a 1990 survey cruise in the Atlantic continental shelf off Long Island, New York, U.S.A.

Usage

data(scallop)

Format

This data frame contains the following columns:

latitude

degrees latitude (north of the Equator).

longitude

degrees longitude (west of Greenwich).

tot.catch

size of scallop catch at location specified by "latitude" and "longitude".

Source

Ecker, M.D. and Heltshe, J.F. (1994). Geostatistical estimates of scallop abundance. In Case Studies in Biometry. Lange, N., Ryan, L., Billard, L., Brillinger, D., Conquest, L. and Greenhouse, J. (eds.) New York: John Wiley & Sons, 107-124.

References

Ruppert, D., Wand, M.P. and Carroll, R.J. (2003)
Semiparametric Regression Cambridge University Press.
http://stat.tamu.edu/~carroll/semiregbook/

Examples

library(SemiPar)
data(scallop)
pairs(scallop)