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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd"><html><head> <title>Description of getmesh</title> <meta name="keywords" content="getmesh"> <meta name="description" content="GETMESH generates initial mesh data structure."> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <meta name="generator" content="m2html © 2003 Guillaume Flandin"> <meta name="robots" content="index, follow"> <link type="text/css" rel="stylesheet" href="../../m2html.css"></head><body><a name="_top"></a><!-- # AFEM@matlab --><!-- menu.html 5_Mesh --><h1>getmesh</h1><h2><a name="_name"></a>PURPOSE <a href="#_top"><img alt="^" border="0" src="../../up.png"></a></h2><div class="box"><strong>GETMESH generates initial mesh data structure.</strong></div><h2><a name="_synopsis"></a>SYNOPSIS <a href="#_top"><img alt="^" border="0" src="../../up.png"></a></h2><div class="box"><strong>function mesh = getmesh(node,elem,Dirichlet,Neumann,type,solu) </strong></div><h2><a name="_description"></a>DESCRIPTION <a href="#_top"><img alt="^" border="0" src="../../up.png"></a></h2><div class="fragment"><pre class="comment"> GETMESH generates initial mesh data structure. USAGE mesh = getmesh(node,elem,Dirichlet,Neumann,type,solu) INPUT node: array of nodes (required) elem: array of element indices (required) Dirichlet: Dirichlet boundary edges (required) Neumann: Neumann boundary edges (required) type: node in use (optional) solu: initial solution (optional) OUTPUT mesh: current mesh</pre></div><!-- crossreference --><h2><a name="_cross"></a>CROSS-REFERENCE INFORMATION <a href="#_top"><img alt="^" border="0" src="../../up.png"></a></h2>This function calls:<ul style="list-style-image:url(../../matlabicon.gif)"><li><a href="../../AFEM@matlab/4_Refine/label.html" class="code" title="function elem = label(node,elem)">label</a> LABEL label the longest edge of each triangle as the base</li></ul>This function is called by:<ul style="list-style-image:url(../../matlabicon.gif)"><li><a href="../../AFEM@matlab/1_Example/Lbig.html" class="code" title="function Lbig">Lbig</a> LBIG solves Poisson equation in a L-shaped domain with FEM with</li><li><a href="../../AFEM@matlab/1_Example/Lshape.html" class="code" title="function Lshape">Lshape</a> LSHAPE solves Poisson equation in a L-shaped domain with FEM with</li><li><a href="../../AFEM@matlab/1_Example/circle.html" class="code" title="function circle">circle</a> CIRCLE simulates adaptive grids for a problem with moving circlular</li><li><a href="../../AFEM@matlab/1_Example/crack.html" class="code" title="function crack">crack</a> CRACK solves Poisson equation in a crack domain with AFEM.</li><li><a href="../../AFEM@matlab/1_Example/simple.html" class="code" title="function simple">simple</a> SIMPLE solves Poisson equation with Dirichlet boundaray condition in a</li></ul><!-- crossreference --><h2><a name="_source"></a>SOURCE CODE <a href="#_top"><img alt="^" border="0" src="../../up.png"></a></h2><div class="fragment"><pre><a name="_sub0" href="#_subfunctions" class="code">function mesh = getmesh(node,elem,Dirichlet,Neumann,type,solu)</a><span class="comment">% GETMESH generates initial mesh data structure.</span><span class="comment">%</span><span class="comment">% USAGE</span><span class="comment">% mesh = getmesh(node,elem,Dirichlet,Neumann,type,solu)</span><span class="comment">%</span><span class="comment">% INPUT</span><span class="comment">% node: array of nodes (required)</span><span class="comment">% elem: array of element indices (required)</span><span class="comment">% Dirichlet: Dirichlet boundary edges (required)</span><span class="comment">% Neumann: Neumann boundary edges (required)</span><span class="comment">% type: node in use (optional)</span><span class="comment">% solu: initial solution (optional)</span><span class="comment">%</span><span class="comment">% OUTPUT</span><span class="comment">% mesh: current mesh</span><span class="comment">%</span><span class="comment">% L. Chen & C. Zhang 10-15-2006</span><span class="comment">%--------------------------------------------------------------------------</span><span class="comment">% Generate opitional data</span><span class="comment">%--------------------------------------------------------------------------</span><span class="keyword">if</span> nargin <= 5, solu = zeros(size(node,1),1); <span class="keyword">end</span><span class="keyword">if</span> nargin <= 4, type = uint8(ones(size(node,1),1)); <span class="keyword">end</span><span class="comment">%--------------------------------------------------------------------------</span><span class="comment">% Label the mesh by the longest edge rule</span><span class="comment">%--------------------------------------------------------------------------</span>elem = <a href="../../AFEM@matlab/4_Refine/label.html" class="code" title="function elem = label(node,elem)">label</a>(node,elem);<span class="comment">%--------------------------------------------------------------------------</span><span class="comment">% Generate mesh data structure</span><span class="comment">%--------------------------------------------------------------------------</span>mesh = struct(<span class="string">'node'</span>,node, <span class="string">'elem'</span>,elem, <span class="string">'type'</span>,type, <span class="string">'solu'</span>,solu, <span class="keyword">...</span> <span class="string">'Dirichlet'</span>,Dirichlet, <span class="string">'Neumann'</span>,Neumann); <span class="comment">%--------------------------------------------------------------------------</span><span class="comment">% End of function GETMESH</span><span class="comment">%--------------------------------------------------------------------------</span></pre></div><hr><address>Generated on Fri 17-Nov-2006 11:02:53 by <strong><a href="http://www.artefact.tk/software/matlab/m2html/" target="_parent">m2html</a></strong> © 2003</address></body></html>⌨️ 快捷键说明
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