EVOLUTION-MANAGER
Edit File: galaxies.html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><title>R: Velocities for 82 Galaxies</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <link rel="stylesheet" type="text/css" href="R.css" /> </head><body> <table width="100%" summary="page for galaxies {MASS}"><tr><td>galaxies {MASS}</td><td style="text-align: right;">R Documentation</td></tr></table> <h2> Velocities for 82 Galaxies </h2> <h3>Description</h3> <p>A numeric vector of velocities in km/sec of 82 galaxies from 6 well-separated conic sections of an <code>unfilled</code> survey of the Corona Borealis region. Multimodality in such surveys is evidence for voids and superclusters in the far universe. </p> <h3>Usage</h3> <pre> galaxies </pre> <h3>Note</h3> <p>There is an 83rd measurement of 5607 km/sec in the Postman <em>et al.</em> paper which is omitted in Roeder (1990) and from the dataset here. </p> <p>There is also a typo: this dataset has 78th observation 26690 which should be 26960. </p> <h3>Source</h3> <p>Roeder, K. (1990) Density estimation with confidence sets exemplified by superclusters and voids in galaxies. <em>Journal of the American Statistical Association</em> <b>85</b>, 617–624. </p> <p>Postman, M., Huchra, J. P. and Geller, M. J. (1986) Probes of large-scale structures in the Corona Borealis region. <em>Astronomical Journal</em> <b>92</b>, 1238–1247. </p> <h3>References</h3> <p>Venables, W. N. and Ripley, B. D. (2002) <em>Modern Applied Statistics with S.</em> Fourth edition. Springer. </p> <h3>Examples</h3> <pre> gal <- galaxies/1000 c(width.SJ(gal, method = "dpi"), width.SJ(gal)) plot(x = c(0, 40), y = c(0, 0.3), type = "n", bty = "l", xlab = "velocity of galaxy (1000km/s)", ylab = "density") rug(gal) lines(density(gal, width = 3.25, n = 200), lty = 1) lines(density(gal, width = 2.56, n = 200), lty = 3) </pre> <hr /><div style="text-align: center;">[Package <em>MASS</em> version 7.3-51.4 <a href="00Index.html">Index</a>]</div> </body></html>