EVOLUTION-MANAGER
Edit File: beavers.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: Body Temperature Series of Two Beavers</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 beavers {datasets}"><tr><td>beavers {datasets}</td><td style="text-align: right;">R Documentation</td></tr></table> <h2>Body Temperature Series of Two Beavers</h2> <h3>Description</h3> <p>Reynolds (1994) describes a small part of a study of the long-term temperature dynamics of beaver <em>Castor canadensis</em> in north-central Wisconsin. Body temperature was measured by telemetry every 10 minutes for four females, but data from a one period of less than a day for each of two animals is used there. </p> <h3>Usage</h3> <pre> beaver1 beaver2 </pre> <h3>Format</h3> <p>The <code>beaver1</code> data frame has 114 rows and 4 columns on body temperature measurements at 10 minute intervals. </p> <p>The <code>beaver2</code> data frame has 100 rows and 4 columns on body temperature measurements at 10 minute intervals. </p> <p>The variables are as follows: </p> <dl> <dt>day</dt><dd><p>Day of observation (in days since the beginning of 1990), December 12–13 (<code>beaver1</code>) and November 3–4 (<code>beaver2</code>).</p> </dd> <dt>time</dt><dd><p>Time of observation, in the form <code>0330</code> for 3:30am</p> </dd> <dt>temp</dt><dd><p>Measured body temperature in degrees Celsius.</p> </dd> <dt>activ</dt><dd><p>Indicator of activity outside the retreat.</p> </dd> </dl> <h3>Note</h3> <p>The observation at 22:20 is missing in <code>beaver1</code>. </p> <h3>Source</h3> <p>P. S. Reynolds (1994) Time-series analyses of beaver body temperatures. Chapter 11 of Lange, N., Ryan, L., Billard, L., Brillinger, D., Conquest, L. and Greenhouse, J. eds (1994) <em>Case Studies in Biometry.</em> New York: John Wiley and Sons. </p> <h3>Examples</h3> <pre> require(graphics) (yl <- range(beaver1$temp, beaver2$temp)) beaver.plot <- function(bdat, ...) { nam <- deparse(substitute(bdat)) with(bdat, { # Hours since start of day: hours <- time %/% 100 + 24*(day - day[1]) + (time %% 100)/60 plot (hours, temp, type = "l", ..., main = paste(nam, "body temperature")) abline(h = 37.5, col = "gray", lty = 2) is.act <- activ == 1 points(hours[is.act], temp[is.act], col = 2, cex = .8) }) } op <- par(mfrow = c(2, 1), mar = c(3, 3, 4, 2), mgp = 0.9 * 2:0) beaver.plot(beaver1, ylim = yl) beaver.plot(beaver2, ylim = yl) par(op) </pre> <hr /><div style="text-align: center;">[Package <em>datasets</em> version 3.6.0 <a href="00Index.html">Index</a>]</div> </body></html>