<!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>B.1.1.1 Optional file header records</TITLE> <META NAME="description" CONTENT="B.1.1.1 Optional file header records"> <META NAME="keywords" CONTENT="GMT_Docs"> <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_Docs.css"> <LINK REL="next" HREF="node176.html"> <LINK REL="previous" HREF="node174.html"> <LINK REL="up" HREF="node174.html"> <LINK REL="next" HREF="node176.html"> </HEAD> <BODY bgcolor="#ffffff"> <!--Navigation Panel--> <A NAME="tex2html5105" HREF="node176.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.png"></A> <A NAME="tex2html5099" HREF="node174.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.png"></A> <A NAME="tex2html5093" HREF="node174.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.png"></A> <A NAME="tex2html5101" HREF="node1.html"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A> <A NAME="tex2html5103" HREF="node255.html"> <IMG WIDTH="43" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="index" SRC="index.png"></A> <BR> <B> Next:</B> <A NAME="tex2html5106" HREF="node176.html">B.1.1.2 Optional segment header</A> <B> Up:</B> <A NAME="tex2html5100" HREF="node174.html">B.1.1 ASCII tables</A> <B> Previous:</B> <A NAME="tex2html5094" HREF="node174.html">B.1.1 ASCII tables</A> <B> <A NAME="tex2html5102" HREF="node1.html">Contents</A></B> <B> <A NAME="tex2html5104" HREF="node255.html">Index</A></B> <BR> <BR> <!--End of Navigation Panel--> <H3><A NAME="SECTION001911100000000000000"> B.1.1.1 Optional file header records</A> </H3> The first data record may be preceded by 1 or more header records. When using such files, make sure to use the <B>-H</B> option and set the parameter <B>N_HEADER_RECS</B> in the <U>.gmtdefaults4</U> file (System default is 1 header record if <B>-H</B> is set; you may also use <B>-H</B><I>nrecs</I> directly). Fields within a record must be separated by spaces, tabs, or commas. Each field can be an integer or floating-point number or a geographic coordinate string using the [+<IMG WIDTH="8" HEIGHT="31" ALIGN="MIDDLE" BORDER="0" SRC="img12.png" ALT="$\vert$">-]dd[:mm[:ss]][W<IMG WIDTH="8" HEIGHT="31" ALIGN="MIDDLE" BORDER="0" SRC="img12.png" ALT="$\vert$">S<IMG WIDTH="8" HEIGHT="31" ALIGN="MIDDLE" BORDER="0" SRC="img12.png" ALT="$\vert$">N<IMG WIDTH="8" HEIGHT="31" ALIGN="MIDDLE" BORDER="0" SRC="img12.png" ALT="$\vert$">E<IMG WIDTH="8" HEIGHT="31" ALIGN="MIDDLE" BORDER="0" SRC="img12.png" ALT="$\vert$">w<IMG WIDTH="8" HEIGHT="31" ALIGN="MIDDLE" BORDER="0" SRC="img12.png" ALT="$\vert$">s<IMG WIDTH="8" HEIGHT="31" ALIGN="MIDDLE" BORDER="0" SRC="img12.png" ALT="$\vert$">n<IMG WIDTH="8" HEIGHT="31" ALIGN="MIDDLE" BORDER="0" SRC="img12.png" ALT="$\vert$">e] format. Thus, 12:30:44.5W, 17.5S, 1:00:05, and 200:45E are all valid input strings. <P> <HR> <!--Navigation Panel--> <A NAME="tex2html5105" HREF="node176.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.png"></A> <A NAME="tex2html5099" HREF="node174.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.png"></A> <A NAME="tex2html5093" HREF="node174.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.png"></A> <A NAME="tex2html5101" HREF="node1.html"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A> <A NAME="tex2html5103" HREF="node255.html"> <IMG WIDTH="43" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="index" SRC="index.png"></A> <BR> <B> Next:</B> <A NAME="tex2html5106" HREF="node176.html">B.1.1.2 Optional segment header</A> <B> Up:</B> <A NAME="tex2html5100" HREF="node174.html">B.1.1 ASCII tables</A> <B> Previous:</B> <A NAME="tex2html5094" HREF="node174.html">B.1.1 ASCII tables</A> <B> <A NAME="tex2html5102" HREF="node1.html">Contents</A></B> <B> <A NAME="tex2html5104" HREF="node255.html">Index</A></B> <!--End of Navigation Panel--> <ADDRESS> Paul Wessel 2010-01-14 </ADDRESS> </BODY> </HTML>
