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jlchan · Mar 26, 2024 · afa5d52 · afa5d52
1 parent 7d794ff
commit afa5d52
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/RefElemData_SBP.jl b/src/RefElemData_SBP.jl
@@ -286,6 +286,8 @@ function sparse_low_order_SBP_operators(rd::RefElemData{NDIMS}; factor=1.01) whe
             "more than one connected component. Try increasing the value of `factor`.")
     end
 
+    # note: this part doesn't do anything for a nodal SBP operator. In that case, E_dense = E = Vf 
+    # and E should just reduce to Vf, which is a face extraction operator. 
     E_dense = Vf * Pq
     E = zeros(size(E_dense))
     for i in axes(E, 1)