EVOLUTION-MANAGER
Edit File: quakes.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: Locations of Earthquakes off Fiji</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 quakes {datasets}"><tr><td>quakes {datasets}</td><td style="text-align: right;">R Documentation</td></tr></table> <h2>Locations of Earthquakes off Fiji</h2> <h3>Description</h3> <p>The data set give the locations of 1000 seismic events of MB > 4.0. The events occurred in a cube near Fiji since 1964. </p> <h3>Usage</h3> <pre>quakes</pre> <h3>Format</h3> <p>A data frame with 1000 observations on 5 variables. </p> <table summary="Rd table"> <tr> <td style="text-align: right;"> [,1] </td><td style="text-align: left;"> lat </td><td style="text-align: left;"> numeric </td><td style="text-align: left;"> Latitude of event</td> </tr> <tr> <td style="text-align: right;"> [,2] </td><td style="text-align: left;"> long </td><td style="text-align: left;"> numeric </td><td style="text-align: left;"> Longitude</td> </tr> <tr> <td style="text-align: right;"> [,3] </td><td style="text-align: left;"> depth </td><td style="text-align: left;"> numeric </td><td style="text-align: left;"> Depth (km)</td> </tr> <tr> <td style="text-align: right;"> [,4] </td><td style="text-align: left;"> mag </td><td style="text-align: left;"> numeric </td><td style="text-align: left;"> Richter Magnitude</td> </tr> <tr> <td style="text-align: right;"> [,5] </td><td style="text-align: left;"> stations </td><td style="text-align: left;"> numeric </td><td style="text-align: left;"> Number of stations reporting </td> </tr> </table> <h3>Details</h3> <p>There are two clear planes of seismic activity. One is a major plate junction; the other is the Tonga trench off New Zealand. These data constitute a subsample from a larger dataset of containing 5000 observations. </p> <h3>Source</h3> <p>This is one of the Harvard PRIM-H project data sets. They in turn obtained it from Dr. John Woodhouse, Dept. of Geophysics, Harvard University. </p> <h3>Examples</h3> <pre> require(graphics) pairs(quakes, main = "Fiji Earthquakes, N = 1000", cex.main = 1.2, pch = ".") </pre> <hr /><div style="text-align: center;">[Package <em>datasets</em> version 3.6.0 <a href="00Index.html">Index</a>]</div> </body></html>