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plotting.htm
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plotting.htm
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"
"http://www.w3.org/TR/REC-html40/loose.dtd">
<HTML>
<HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<META NAME="Author" CONTENT="Paul R. Sheppard">
<META NAME="GENERATOR" CONTENT="Mozilla/4.05 [en] (Win95; U) [Netscape]">
<META NAME="KeyWords" CONTENT="dendrochronology, tree ring, crossdating, skeleton plot">
<TITLE>Crossdating: Skeleton Plotting</TITLE>
<LINK REL=stylesheet HREF="crossdatestyle.css" TYPE="text/css">
</HEAD>
<BODY>
<H1>Making Skeleton Plots</H1><BR>
<CENTER><TABLE><TR><TD>
When skeleton plotting ring-width variation of a core, note that:
<UL>
<LI>Narrow rings merit marks on the skeleton plot
<LI>The narrower the ring, the longer the mark
<LI>very wide rings occasionally merit a little "b" mark (for big)
<LI>Normal or average rings <EM>DO NOT</EM> merit marks on the skeleton plot
<LI>For example, compare the core and skeleton plot below:
<UL>
<LI>The narrowest ring is connected (<FONT COLOR="blue">blue line</FONT>) with the longest skeleton mark
<LI>The widest ring is connected (<FONT COLOR="#669900">green line</FONT>) with a "b" mark (for big)
<LI>Note the <FONT COLOR="RED">red line</FONT>:
<OL>
<LI>Points to a ring of average width, but it seems narrow compared to the preceding ring
<LI>Perhaps it merits a small mark because of the large year-to-year difference
</OL>
</UL><BR>
<LI><EM>Good idea:</EM> Hit the "Try Again" button to see more examples
</UL></TD></TR></TABLE><BR>
<APPLET code="Plotting.class" WIDTH="600" HEIGHT="220"></APPLET><BR><BR>
<TABLE>
<TR><TH COLSPAN="3">How to make marks when <A HREF="SkeletonPlot18.htm">you try skeleton plotting for yourself</A>:</TR>
<TR><TD><IMG SRC="mouseactions.gif" WIDTH="145" HEIGHT="116" ALT="mouse action options">
<TD>
<UL>
<LI>You'll see a panel of circle options, as on the left:
<UL>
<LI>You can either draw or erase marks with your mouse
<LI>Marks may be either:
<OL>
<LI>normal lines for narrow rings
<LI>a "b" for wide rings
<LI>a mark for the <A HREF="ringanomalies.htm">ring-growth anomalies</A> of absent or false rings
</OL><BR>
<LI><EM>Practice</EM> making normal marks on the right:
<OL>
<LI>Align tip of cursor on vertical line of choice
<LI>Adjust height of cursor in bottom two-thirds of graph
<LI>Mouse click just once!
<LI>"Try Again" as necessary
</OL>
</UL><BR>
<LI><EM>If you mark something mistakenly</EM>:
<UL>
<LI>Just mouse click on the "Erase" circle option
<LI>Put mouse over the mistake and click it away
<LI>Don't forget to mouse click on "Draw" to continue plotting
</UL>
</UL>
<TD><APPLET code="MakeMarks.class" WIDTH="130" HEIGHT="165"></APPLET></TR></TABLE><BR>
</CENTER>
<HR>
<CENTER>
<A HREF="introcrossdate.htm">Introduction</A> |
<A HREF="applications.htm">Dendrochronology Applications</A> |
<A HREF="exampleapplication.htm">Crossdating Application</A> |
<A HREF="ringanomalies.htm">Ring-Growth Anomalies</A><BR>
<A HREF="sensitivitycomplacency.htm">Sensitivity-Complacency</A> |
<A HREF="plotting.htm">Skeleton Plotting</A> |
<A HREF="relativescale.htm">Relative Scale</A> |
<A HREF="masterchronology.htm">Master Chronology</A><BR>
<A HREF="patternmatching.htm">Pattern Matching</A> |
<A HREF="findingdates.htm">Finding the Dates</A> |
<A HREF="absentfalse.htm">Absent/False Rings</A> |
<A HREF="SkeletonPlot18.htm">Try Skeleton Plotting for Yourself!</A><BR>
<A HREF="http://www.ltrr.arizona.edu">Laboratory of Tree-Ring Research</A>
</CENTER>
<HR>
<ADDRESS>Paul R. Sheppard<BR>
Laboratory of Tree-Ring Research, The University of Arizona<BR>
Tucson, Arizona 85721 USA<BR>
office: (520) 621-6474, fax: (520) 621-8229<BR>
Comments to: <A HREF="mailto:[email protected]">[email protected]</A>
</ADDRESS><BR>
Copyright © 1998, Laboratory of Tree-Ring Research, The University of Arizona<BR>
Revised -- December, 1998<BR>
URL: <A HREF="plotting.htm">http://tree.ltrr.arizona.edu/skeletonplot/plotting.htm </A>
</BODY>
</HTML>