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<H1><A NAME="SECTION00310000000000000000">
1.1 Tutorial setup</A>
</H1>

<OL>
<LI>We assume that <A NAME="tex2html34"
  HREF="http://www.soest.hawaii.edu/gmt"><B>GMT</B></A> has been properly and fully
installed and that you have the statement
<TT>setenv GMTHOME <IMG
 WIDTH="16" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
 SRC="img8.gif"
 ALT="$&lt;$">path to <A NAME="tex2html33"

HREF="http://www.soest.hawaii.edu/gmt"><B>GMT</B></A> directory<IMG
 WIDTH="16" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
 SRC="img9.gif"
 ALT="$&gt;$"></TT>
in your <U>.login</U> as
described in the <A NAME="tex2html35"
  HREF="http://www.soest.hawaii.edu/gmt"><B>GMT</B></A> <U>README</U> file.

<P>
</LI>
<LI>All <A NAME="tex2html36"
  HREF="http://www.soest.hawaii.edu/gmt"><B>GMT</B></A> man pages, documentation, and example scripts
are available from the <A NAME="tex2html37"
  HREF="http://www.soest.hawaii.edu/gmt"><B>GMT</B></A> documentation web page.  It is
assumed these pages have been installed locally at your site;
if not they are always available from the main
<A NAME="tex2html38"
  HREF="http://www.soest.hawaii.edu/gmt">GMT home page</A>.

<P>
</LI>
<LI>We recommend you create a sub-directory called <U>tutorial</U>,
cd into that directory, and copy all the tutorial files directly
there with ``<TT>cp -r $GMTHOME/tutorial/* .</TT> ''.

<P>
</LI>
<LI>As we discuss <A NAME="tex2html39"
  HREF="http://www.soest.hawaii.edu/gmt"><B>GMT</B></A> principles it may be a good idea to
consult the <A NAME="tex2html40"
  HREF="http://www.soest.hawaii.edu/gmt"><B>GMT</B></A> Technical Reference and Cookbook for more
detailed explanations.

<P>
</LI>
<LI>The tutorial uses the supplemental <A NAME="tex2html41"
  HREF="http://www.soest.hawaii.edu/gmt"><B>GMT</B></A> program
<A NAME="tex2html42"
  HREF="../grdraster.html"><I><B>grdraster</B></I></A><A NAME="1924"></A> to extract subsets of global gridded data
sets.  For your convenience we also supply the subsets in the
event you do not wish to install <A NAME="tex2html43"
  HREF="../grdraster.html"><I><B>grdraster</B></I></A><A NAME="1933"></A> and the
public data sets it can read.  Thus, run the <A NAME="tex2html44"
  HREF="../grdraster.html"><I><B>grdraster</B></I></A><A NAME="1942"></A>
commands if you have made the installation or ignore them if
you have not.

<P>
</LI>
<LI>For all but the simplest <A NAME="tex2html45"
  HREF="http://www.soest.hawaii.edu/gmt"><B>GMT</B></A> jobs it is recommended that
you place all the <A NAME="tex2html46"
  HREF="http://www.soest.hawaii.edu/gmt"><B>GMT</B></A> (and <I>UNIX</I>) commands in a <I>cshell</I><A NAME="1957"></A> script
file and make it executable.  To ensure that <I>UNIX</I> recognizes
your script as a <I>cshell</I><A NAME="1963"></A> script it is a good habit always to start
the script with the line #!/bin/csh.  All the examples in this
tutorial assumes you are running the <I>cshell</I><A NAME="1968"></A>; if you are using
something different then you are on your own.

<P>
</LI>
<LI>Making a script executable is accomplished using the <TT>chmod</TT>
command, e.g., the script <U>figure_1</U> is made executable
with ``<TT>chmod +x figure_1</TT>''.

<P>
</LI>
<LI>To view a <I>PostScript</I> file (e.g., <U>map.ps</U>) on a UNIX workstation
we use <I>ghostview</I><A NAME="1976"></A> <U>map.ps</U>.  On some systems there
will be similar commands, like <U>imagetool</U> and <U>pageview</U>
on Sun workstations.  In this text we will refer to
<I>ghostview</I><A NAME="1984"></A>; please substitute the relevant <I>PostScript</I> previewer
on your system.

<P>
</LI>
<LI>Please cd into the directory <U>tutorial</U>.  We are
now ready to start.

<P>
</LI>
</OL>

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<ADDRESS>
Paul Wessel
2001-04-18
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