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<A HREF = "index.html">[Index for ./FEM]</A> |
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<A HREF = "../index.html">[Return to Master Index]</A> |
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<H1>fem_grid_struct</H1> |
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<H2>(./FEM/fem_grid_struct.m)</H2> |
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<HR><H3>Help text</H3> |
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<pre> |
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FEM_GRID_STRUCT - Finite element method (FEM) grid description structure |
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FEM_GRID_STRUCT is a structure containing the components |
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that make up a finite element grid. The structure contains |
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the following MINIMUM set of fields. FEM_GRID_STRUCT is NOT a |
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function. This is just the description file for the structure. |
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.name - the domain name of the FEM grid |
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.e - node connectivity list (linear, triangular) [ne x 3 double] |
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.x - x-horizontal node coordinates [nn x 1 double] |
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.y - y-horizontal node coordinates [nn x 1 double] |
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.z - bathymetry list [nn x 1 double] |
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.bnd - boundary segment list [nb x 2 double] |
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The above set of fields is considered minimum from an OPNML/MATLAB |
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post-processing standpoint. |
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The .bnd file need not exist on disk. The OPNML/MATLAB function |
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<A HREF = "../3.FEM/loadgrid.html">LOADGRID</A> can build the .bnd array if it is not located with |
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the other grid files. Note that the .bnd field is not used by the |
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FEM models themselves, but is required by OPNML/MATLAB to speed up |
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the plotting of large domains. |
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If land description files are located by <A HREF = "../3.FEM/loadgrid.html">LOADGRID</A>, then the |
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land description arrays will be attached to the structure as |
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the .lnd and .lbe fields. These fields are used by the function |
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LNDFILL to mask out the exterior of the FEM domain when using the |
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FDCONT contour/vector plotting tools. See FDCONT and LNDMAKE for |
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details. |
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All OPNML/MATLAB function that takes a structure as an input argument |
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will REQUIRE atleast these fields to be filled. Some functions |
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will use more fields, some less. |
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The function <A HREF = "../3.FEM/loadgrid.html">LOADGRID</A> returns a structure containing the above |
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minimum fields. Other functions may add fields, and even modify the |
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minimum field contents, and the user is free to add fields as long as |
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the user-added field names do not conflict with existing or reserved |
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field names. The only currently reserved field names as above. |
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</pre> |
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<HR> |
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Produced by <A HREF="http://www.nd.edu/Courses/kantor/matlab/mat2html">mat2html</A> on Tue Feb 2 16:15:45 EST 1999 |
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