Dear all, My understanding about *structured mesh* is that "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). I write the attached rect4.geo and want to generate structured mesh. I get rect4.msh by executing 'gmsh -2 rect4.geo' 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. 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?
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?
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