rebmix (version 2.6.1)

galaxy: Galaxy Dataset

Description

The unfilled survey of the Corona Borealis region contains the velocities of 82 galaxies from 6 well separated conic sections of space.

Usage

galaxy

format

galaxy is a data frame with 82 cases (rows) and 1 continuous variable (columns) called Velocity.

source

K. Roeder. Density estimation with confidence sets exemplified by superclusters and voids in the galaxies. Journal of American Statistical Association, 85(411):617-624, 1990. http://www.jstor.org/stable/2289993.

References

S. Richardson and P. J. Green. On bayesian analysis of mixtures with an unknown number of components. Journal of the Royal Statistical Society B, 59(4):731-792, 1997. http://www.jstor.org/stable/2985194. G. McLachlan and D. Peel. Contribution to the discussion of paper by s. richardson and p.j. green. Journal of the Royal Statistical Society B, 59(4):779-780, 1997. http://www.jstor.org/stable/2985194. M. Stephens. Bayesian analysis of mixture models with an unknown number of components - an alternative to reversible jump methods. The Annals of Statistics, 28(1):40-74, 2000. http://www.jstor.org/stable/2673981.

Examples

data("galaxy")

colnames(galaxy)

## Write dataset into tab delimited ASCII file.

write.table(galaxy, file = "galaxy.txt", sep = "t", 
  eol = "", row.names = FALSE, col.names = FALSE)
  
## Write dataset into rda file.

save(galaxy, file = "galaxy.rda")