<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> <!--Converted with LaTeX2HTML 2002-2-1 (1.71) original version by: Nikos Drakos, CBLU, University of Leeds * revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan * with significant contributions from: Jens Lippmann, Marek Rouchal, Martin Wilck and others --> <HTML> <HEAD> <TITLE>1.4.2 Logarithmic projection</TITLE> <META NAME="description" CONTENT="1.4.2 Logarithmic projection"> <META NAME="keywords" CONTENT="GMT_Tutorial"> <META NAME="resource-type" CONTENT="document"> <META NAME="distribution" CONTENT="global"> <META NAME="Generator" CONTENT="LaTeX2HTML v2002-2-1"> <META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css"> <LINK REL="STYLESHEET" HREF="GMT_Tutorial.css"> <LINK REL="next" HREF="node25.html"> <LINK REL="previous" HREF="node21.html"> <LINK REL="up" HREF="node20.html"> <LINK REL="next" HREF="node24.html"> </HEAD> <BODY bgcolor="#ffffff"> <!--Navigation Panel--> <A NAME="tex2html717" HREF="node24.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.png"></A> <A NAME="tex2html711" HREF="node20.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.png"></A> <A NAME="tex2html705" HREF="node22.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.png"></A> <A NAME="tex2html713" HREF="node1.html"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A> <A NAME="tex2html715" HREF="node63.html"> <IMG WIDTH="43" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="index" SRC="index.png"></A> <BR> <B> Next:</B> <A NAME="tex2html718" HREF="node24.html">1.4.2.1 Exercises</A> <B> Up:</B> <A NAME="tex2html712" HREF="node20.html">1.4 Laboratory Exercises</A> <B> Previous:</B> <A NAME="tex2html706" HREF="node22.html">1.4.1.1 Exercises</A> <B> <A NAME="tex2html714" HREF="node1.html">Contents</A></B> <B> <A NAME="tex2html716" HREF="node63.html">Index</A></B> <BR> <BR> <!--End of Navigation Panel--> <H2><A NAME="SECTION00342000000000000000"></A> <A NAME="501"></A> <A NAME="502"></A> <BR> 1.4.2 Logarithmic projection </H2> <P> We next will show how to do a basemap for a log-log plot. We will assume that the raw <I>x</I> data range from 3 to 9613 and <I>y</I> ranges from <!-- MATH $3.2 \cdot 10^{20}$ --> <IMG WIDTH="62" HEIGHT="35" ALIGN="MIDDLE" BORDER="0" SRC="img6.png" ALT="$3.2 \cdot 10^{20}$"> to <!-- MATH $6.8 \cdot 10^{24}$ --> <IMG WIDTH="62" HEIGHT="35" ALIGN="MIDDLE" BORDER="0" SRC="img7.png" ALT="$6.8 \cdot 10^{24}$">. One possibility is <P> <PRE> psbasemap -R1/10000/1e20/1e25 -JX9il/6il \ -B2:"Wavelength (m)":/a1pf3:"Power (W)":WS > plot.ps </PRE> <P> (The backslash <IMG WIDTH="12" HEIGHT="31" ALIGN="MIDDLE" BORDER="0" SRC="img8.png" ALT="$\backslash$"> makes <I>UNIX</I> ignore the carriage return that follows and treat the two lines as one long command). <P> <BR><HR> <!--Table of Child-Links--> <A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A> <UL> <LI><A NAME="tex2html719" HREF="node24.html">1.4.2.1 Exercises</A> </UL> <!--End of Table of Child-Links--> <HR> <!--Navigation Panel--> <A NAME="tex2html717" HREF="node24.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.png"></A> <A NAME="tex2html711" HREF="node20.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.png"></A> <A NAME="tex2html705" HREF="node22.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.png"></A> <A NAME="tex2html713" HREF="node1.html"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A> <A NAME="tex2html715" HREF="node63.html"> <IMG WIDTH="43" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="index" SRC="index.png"></A> <BR> <B> Next:</B> <A NAME="tex2html718" HREF="node24.html">1.4.2.1 Exercises</A> <B> Up:</B> <A NAME="tex2html712" HREF="node20.html">1.4 Laboratory Exercises</A> <B> Previous:</B> <A NAME="tex2html706" HREF="node22.html">1.4.1.1 Exercises</A> <B> <A NAME="tex2html714" HREF="node1.html">Contents</A></B> <B> <A NAME="tex2html716" HREF="node63.html">Index</A></B> <!--End of Navigation Panel--> <ADDRESS> Paul Wessel 2010-07-14 </ADDRESS> </BODY> </HTML>