detbndy

(./FEM/detbndy.m)

Function Synopsis

bnd=detbndy(in)

Help text

 DETBNDY compute a boundary segment list for a FEM domain

 DETBNDY bnd=detbndy(e);
         This function computes a boundary for the FEM domain
         described a file containing element connectivity list (e).
         It uses sparse matrix techniques to determine the element
         edges on the boundary of the FEM domain.

 Input:  ele -  element list; 3 (.tri) or 4 (.ele) columns wide
 Output: bnd -  a 2-column list of boundary-node numbers, returned
                to the local workspace

         The output boundary list are pairs of node numbers, not 
         coordinates, describing the edges of elements on the 
         exterior of the domain, including islands.  The segments 
         are not connected.

         Call as: bnd=detbndy(e);

 Written by : Brian O. Blanton at The University of North Carolina 
              at Chapel Hill, Mar 1995.

Cross-Reference Information

loadgrid       ./FEM/loadgrid.m