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<table width="100%" summary="page for galaxies {MASS}"><tr><td>galaxies {MASS}</td><td 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 whihc
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&ndash;624.
</p>
<p>
Postman, M., Huchra, J. P. and Geller, M. J. (1986)
Probes of large-scale structures in the Corona Borealis region.
<EM>Astrophysical Journal</EM>
<B>92</B>, 1238&ndash;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 &lt;- 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 align="center">[Package <em>MASS</em> version 7.2-44 <a href="00Index.html">Index]</a></div>

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