Dear all,<div><br></div><div>My understanding about <i>structured mesh</i> is that "<span class="Apple-style-span" style="font-family: arial, sans-serif; ">all elements and nodes have the same topology (ie same number of neighbors)" . For example, Cell(i,j) is next to cell(i,j+1).</span></div>
<div><span class="Apple-style-span" style="font-family: arial, sans-serif; ">I write the attached rect4.geo and want to generate structured mesh. I get rect4.msh by executing 'gmsh -2 rect4.geo'</span></div><div><span class="Apple-style-span" style="font-family: arial, sans-serif; ">I want to know how this topology relationship is reflected in the .msh file. In fact I do not seen any quadrangle rect4.msh, though I could see quadrangle shown in the GUI.</span></div>
<div><span class="Apple-style-span" style="font-family: arial, sans-serif; ">Do I need to parse the .msh file and build the topology by checking all the cells to see whether the two cell have connected edge?</span></div><div>
<span class="Apple-style-span" style="font-family: arial, sans-serif; "><br></span></div><div><font class="Apple-style-span" face="arial, sans-serif">btw: I am writing code solving PDE using finite difference method. My knowledge about mesh is very limited. Would you please recommend some related teaching materials?</font></div>
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