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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 3.2 Final//FR"><!-- Converted with LaTeX2HTML 95.1 (Fri Jan 20 1995) --><!-- by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds --><!-- Modified Simulog 03/97 --><HTML><HEAD><TITLE>3.1 Introduction</TITLE><LINK REL=STYLESHEET TYPE="text/css"	HREF="./Modulef.css" TITLE="Modulef CSS"><meta name="description" value="3.1 Introduction"><meta name="keywords" value="Guide6"><meta name="resource-type" value="document"><meta name="distribution" value="global"></HEAD><BODY BGCOLOR="#FFFFFF"><P> <IMG SRC="../icons/smallmod.gif" WIDTH=211 HEIGHT=50 ALIGN=BOTTOM	ALT="Modulef"><A NAME=tex2html895 HREF="node34.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/previous_motif.gif"	ALT="previous"></A><A NAME=tex2html901 HREF="node34.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/up_motif.gif"	ALT="up"></A><A NAME=tex2html903 HREF="node36.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/next_motif.gif"	ALT="next"></A><A NAME=tex2html905 HREF="node2.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/contents_motif.gif"	ALT="contents"></A><A HREF="../Guide6-18/node35.html"><IMG BORDER=0 SRC="../icons/zoom18.gif" ALIGN=BOTTOM	ALT="[BIG]"></A><A HREF="../Guide6-14/node35.html"><IMG BORDER=0 SRC="../icons/zoom14.gif" ALIGN=BOTTOM	ALT="[Normal]"></A><A HREF="../Guide6-10/node35.html"><IMG BORDER=0 SRC="../icons/zoom10.gif" ALIGN=BOTTOM	ALT="[small]"></A><BR><B> Next: </B> <A NAME=tex2html904 HREF="node36.html">2.2 Two-dimensional meshes  TRNOXX</A><B>Up: </B> <A NAME=tex2html902 HREF="node34.html">2 Visualization of meshes</A><B> Prev: </B> <A NAME=tex2html896 HREF="node34.html">2 Visualization of meshes</A><B><A HREF="node2.html"	>Contents</A></B><HR SIZE=3 WIDTH="75&#37;"><H1><A NAME=SECTION04310000000000000000>3.1 Introduction</A></H1><P>It is possible to visualize two-dimensional, surface and three-dimensional meshes.The contents of each mesh is read from file, stored in the form:<P><UL><LI> of a <b> NOPO</b> data structure if it corresponds to a two-dimensional mesh, or<LI> of a <b> NOPO</b> or <b> GEOM</b> data structure in the case of a three-dimensional mesh. If a<b> NOPO</b> type data structure is input, it is converted into a <b> GEOM</b> type data structure.Consequently, and in certain cases to save time, it can be of interest to perform the conversiononeself by using preprocessor<b> NOPGXX</b>.</UL><P>The modules are able to process several meshes (or files) until such a time as the memory availableis saturated. Numerous possibilities are offered to:<P><UL><LI> define the observation conditions,<LI> define what the user wants to plot: the type of plot, the numbers which must appear onthe screen,<LI> etc.</UL><P>Preprocessor <b> TRNOXX</b> or <b> REFEXX</b> will be employed (see also <b> TRMCXX</b> or<b> TRC3XX</b> due to the utilization limits of <b> TRNOXX</b>).<P> <b> TRNOXX</b> is described in section <A HREF="node36.html#2d">2.2</A> for the two-dimensional case, and in section <A HREF="node37.html#3d">2.3</A>for the three-dimensional case.<b> REFEXX</b> is described in section <A HREF="node38.html#refexx">2.4</A>.<P><P><P><HR SIZE=3 WIDTH="75&#37;"><IMG SRC="../icons/smallmod.gif" WIDTH=211 HEIGHT=50 ALIGN=BOTTOM	ALT="Modulef"><A NAME=tex2html895 HREF="node34.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/previous_motif.gif"	ALT="previous"></A><A NAME=tex2html901 HREF="node34.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/up_motif.gif"	ALT="up"></A><A NAME=tex2html903 HREF="node36.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/next_motif.gif"	ALT="next"></A><A NAME=tex2html905 HREF="node2.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/contents_motif.gif"	ALT="contents"></A><A HREF="../Guide6-18/node35.html"><IMG BORDER=0 SRC="../icons/zoom18.gif" ALIGN=BOTTOM	ALT="[BIG]"></A><A HREF="../Guide6-14/node35.html"><IMG BORDER=0 SRC="../icons/zoom14.gif" ALIGN=BOTTOM	ALT="[Normal]"></A><A HREF="../Guide6-10/node35.html"><IMG BORDER=0 SRC="../icons/zoom10.gif" ALIGN=BOTTOM	ALT="[small]"></A><BR><B> Next: </B> <A NAME=tex2html904 HREF="node36.html">2.2 Two-dimensional meshes  TRNOXX</A><B>Up: </B> <A NAME=tex2html902 HREF="node34.html">2 Visualization of meshes</A><B> Prev: </B> <A NAME=tex2html896 HREF="node34.html">2 Visualization of meshes</A><B><A HREF="node2.html"	>Contents</A></B><BR> <HR><P><ADDRESS></ADDRESS></BODY></HTML>
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