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<H1><A NAME="SECTION001400000000000000000">
6. Cook-book</A>
</H1>
<P>
In this section we will be giving several examples of
typical usage of <A NAME="tex2html350"
HREF="http://www.soest.hawaii.edu/gmt"><B>GMT</B></A> programs. In general, we will
start with a raw data set, manipulate the numbers in
various ways, then display the results in diagram or
map view. The resulting plots will have in common that
they are all made up of simpler plots that have been
overlaid to create a complex illustration. We will
mostly follow the following format:
<P>
<OL>
<LI>We explain what we want to achieve in plain
language.
<P>
</LI>
<LI>We present a cshell script that contains
all commands used to generate the illustration.
<P>
</LI>
<LI>We explain the rationale behind the commands.
<P>
</LI>
<LI>We present the illustration, 50% reduced in size, and without
the timestamp (<B>-U</B>).
</LI>
</OL>
<P>
A detailed discussion of each command is not given;
we refer you to the manual pages for command line
syntax, etc. We encourage you to run these scripts for yourself.
See Appendix D if you would like an electronic version
of all the shell-scripts (both <I>csh</I><A NAME="9903"></A> and <I>bash</I><A NAME="9908"></A> scripts
are available; only the <I>csh</I><A NAME="9913"></A>-scripts are discussed here) and support
data used below. Note that all examples explicitly specifies the
measurement units, so although we use inches you should be able
to run these scripts and get the same plots even if you have cm
as the default measure unit. The examples are all written to be ``quiet'',
that is no information is echoed to the screen. Thus,
these scripts are well suited for background execution.
Note that we also end each script by cleaning up after
ourselves. Because <I>awk</I><A NAME="9918"></A> is broken as designed on some
systems, and <I>nawk</I><A NAME="9923"></A> is not available on others we refer
to <I>$AWK</I><A NAME="9928"></A> in the scripts below; the <I>do_examples</I><A NAME="9933"></A>
scripts will set this when running all examples.
<P>
<BR><HR>
<!--Table of Child-Links-->
<A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A>
<UL>
<LI><A NAME="tex2html2034"
HREF="node74.html">6.1 The making of contour maps</A>
<LI><A NAME="tex2html2035"
HREF="node75.html">6.2 Image presentations</A>
<LI><A NAME="tex2html2036"
HREF="node76.html">6.3 Spectral estimation and xy-plots</A>
<LI><A NAME="tex2html2037"
HREF="node77.html">6.4 A 3-D perspective mesh plot</A>
<LI><A NAME="tex2html2038"
HREF="node78.html">6.5 A 3-D illuminated surface in black and white</A>
<LI><A NAME="tex2html2039"
HREF="node79.html">6.6 Plotting of histograms</A>
<LI><A NAME="tex2html2040"
HREF="node80.html">6.7 A simple location map</A>
<LI><A NAME="tex2html2041"
HREF="node81.html">6.8 A 3-D histogram</A>
<LI><A NAME="tex2html2042"
HREF="node82.html">6.9 Plotting time-series along tracks</A>
<LI><A NAME="tex2html2043"
HREF="node83.html">6.10 A geographical bar graph plot</A>
<LI><A NAME="tex2html2044"
HREF="node84.html">6.11 Making a 3-D RGB color cube</A>
<LI><A NAME="tex2html2045"
HREF="node85.html">6.12 Optimal triangulation of data</A>
<LI><A NAME="tex2html2046"
HREF="node86.html">6.13 Plotting of vector fields</A>
<LI><A NAME="tex2html2047"
HREF="node87.html">6.14 Gridding of data and trend surfaces</A>
<LI><A NAME="tex2html2048"
HREF="node88.html">6.15 Gridding, contouring, and masking of unconstrained areas</A>
<LI><A NAME="tex2html2049"
HREF="node89.html">6.16 Gridding of data, continued</A>
<LI><A NAME="tex2html2050"
HREF="node90.html">6.17 Images clipped by coastlines</A>
<LI><A NAME="tex2html2051"
HREF="node91.html">6.18 Volumes and Spatial Selections</A>
<LI><A NAME="tex2html2052"
HREF="node92.html">6.19 Color patterns on maps</A>
<LI><A NAME="tex2html2053"
HREF="node93.html">6.20 Custom map symbols</A>
</UL>
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HREF="node72.html">5.5.7 Van der Grinten</A>
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<ADDRESS>
Paul Wessel
2001-04-18
</ADDRESS>
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