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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><!--Converted with LaTeX2HTML 2K.1beta (1.48)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>Running the program</TITLE><META NAME="description" CONTENT="Running the program"><META NAME="keywords" CONTENT="Documentation"><META NAME="resource-type" CONTENT="document"><META NAME="distribution" CONTENT="global"><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"><META NAME="Generator" CONTENT="LaTeX2HTML v2K.1beta"><META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css"><LINK REL="STYLESHEET" HREF="Documentation.css"><LINK REL="previous" HREF="node6.html"><LINK REL="up" HREF="node5.html"><LINK REL="next" HREF="node8.html"></HEAD><BODY ><!--Navigation Panel--><A NAME="tex2html118" HREF="node8.html"><IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="/usr/share/latex2html/icons/next.png"></A> <A NAME="tex2html114" HREF="node5.html"><IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="/usr/share/latex2html/icons/up.png"></A> <A NAME="tex2html110" HREF="node6.html"><IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="/usr/share/latex2html/icons/prev.png"></A> <A NAME="tex2html116" HREF="node1.html"><IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="/usr/share/latex2html/icons/contents.png"></A> <BR><B> Next:</B> <A NAME="tex2html119" HREF="node8.html">Reference section</A><B> Up:</B> <A NAME="tex2html115" HREF="node5.html">Examples</A><B> Previous:</B> <A NAME="tex2html111" HREF="node6.html">Compiling the program</A>   <B> <A NAME="tex2html117" HREF="node1.html">Contents</A></B> <BR><BR><!--End of Navigation Panel--><H2><A NAME="SECTION00052000000000000000">Running the program</A></H2><P><P></P><DIV ALIGN="CENTER"><A NAME="fig1"></A><A NAME="96"></A><TABLE><CAPTION ALIGN="BOTTOM"><STRONG>Figure 1:</STRONG>Screen-shot of the GUI after a graphics window has been openedand the density graph has been selected. If you right-click on thedensity option you can choose symbols and colors for the graph.</CAPTION><TR><TD><DIV ALIGN="CENTER"><!-- MATH $\resizebox{0.8\textwidth}{!}{\includegraphics{screen1.eps}}$ --><IMG WIDTH="444" HEIGHT="348" ALIGN="BOTTOM" BORDER="0" SRC="img3.png" ALT="\resizebox{0.8\textwidth}{!}{\includegraphics{screen1.eps}}"></DIV></TD></TR></TABLE></DIV><P></P><P>If you now type <PRE>./prog2</PRE>you will see the GUI appear. The GUI is shown in Figure<A HREF="node7.html#fig1">1</A>. First you may want to click with the left mouse button onthe ``Density graph'' button to see the density. Then in the densitygraph you may want to select the ``Density'' with the left mousebutton. If you click with the right mouse button on the ``Density''field you can choose several properties of the graph. If you want toremove the new menu simply right-click the ``Density'' button aswell. This is a general method to remove menus that you havecreated. The only exceptions are graphics windows because you cancreate an unlimited number of them.<P>Now clicking on the ``Control'' button will give you a menu thatallows you to choose several properties of the graph. You may want totoggle the ``AutoScaling'' button. Next right-click on the ``Repeat = 1000''button in the main menu. A cursor will appear and you can change thisvalue to 1. Make sure that you finish the input by pressing enter. Theprogram will not allow you to do anything else before you do this.<P>Now, if you are ready to look at the evolution of the density, pressthe ``Pause'' button and watch the evolution of the density. You cansee that the initial density fluctuation decays and leaves us with ahomogeneous solution. We actually know that analytically the sinfunction with an exponentially decaying amplitude is a solution of thediffusion equation. So now press ``AutoScaling'' to on andpress the Restart button. In the new menu press ``Restart now''. Nowyou can see the evolution of the density and the form indeed remainsconstant (except for the moving scale) so that we see that ournumerical approach is in agreement with the analytical solution.<P>To finish the program simply press the ``done'' button.<P><HR><!--Navigation Panel--><A NAME="tex2html118" HREF="node8.html"><IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="/usr/share/latex2html/icons/next.png"></A> <A NAME="tex2html114" HREF="node5.html"><IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="/usr/share/latex2html/icons/up.png"></A> <A NAME="tex2html110" HREF="node6.html"><IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="/usr/share/latex2html/icons/prev.png"></A> <A NAME="tex2html116" HREF="node1.html"><IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="/usr/share/latex2html/icons/contents.png"></A> <BR><B> Next:</B> <A NAME="tex2html119" HREF="node8.html">Reference section</A><B> Up:</B> <A NAME="tex2html115" HREF="node5.html">Examples</A><B> Previous:</B> <A NAME="tex2html111" HREF="node6.html">Compiling the program</A>   <B> <A NAME="tex2html117" HREF="node1.html">Contents</A></B> <!--End of Navigation Panel--><ADDRESS>2003-01-29</ADDRESS></BODY></HTML>⌨️ 快捷键说明
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