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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>el_areas</H1> |
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<H2>(./FEM/el_areas.m)</H2> |
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<HR><H3>Function Synopsis</H3> |
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<pre>[ret_struct,ineg]=el_areas(fem_grid_struct)</pre> |
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<HR><H3>Help text</H3> |
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<pre> |
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EL_AREAS - compute triangular finite element areas |
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EL_AREAS(<A HREF = "../3.FEM/fem_grid_struct.html">FEM_GRID_STRUCT</A>) computes the areas for the |
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elements of the FEM domain described in the |
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structure <A HREF = "../3.FEM/fem_grid_struct.html">FEM_GRID_STRUCT</A>. The function must |
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return a new structure, which is identical to the |
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input structure with the element areas attached. |
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The element areas are contained in the field .ar, |
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so that the new structure now includes: |
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.ar - element areas [ne x 1 double] |
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EL_AREAS optionally returns an index of element |
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numbers whose areas are negative (if any). |
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Negative element areas indicate clockwise elemental |
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node numbering, instead of the conventional counter- |
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clockwise numbering. |
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INPUT : <A HREF = "../3.FEM/fem_grid_struct.html">fem_grid_struct</A> - (from <A HREF = "../3.FEM/loadgrid.html">LOADGRID</A>, see <A HREF = "../3.FEM/fem_grid_struct.html">FEM_GRID_STRUCT</A>) |
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OUTPUT : new_struct (REQ) - new structure with areas |
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ineg (OPT) - index of negative area elements |
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CALL : >>new_struct=el_areas(<A HREF = "../3.FEM/fem_grid_struct.html">fem_grid_struct</A>); |
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or |
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>>[new_struct,ineg]=el_areas(<A HREF = "../3.FEM/fem_grid_struct.html">fem_grid_struct</A>); |
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Written by : Brian O. Blanton |
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Summer 1997 |
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</pre> |
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<HR><H3>Cross-Reference Information</H3>This function calls |
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<pre><UL> |
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<LI><A HREF = "../3.FEM/is_valid_struct.html">is_valid_struct</A>./FEM/is_valid_struct.m</LI> |
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</UL></pre> |
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This function is called by |
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<pre><UL> |
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<LI><A HREF = "../3.FEM/interp_scalar.html">interp_scalar</A> ./FEM/interp_scalar.m</LI> |
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<LI><A HREF = "../3.FEM/loadgrid.html">loadgrid</A> ./FEM/loadgrid.m</LI> |
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</UL></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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