From: heister <heister@0785d39b-7218-0410-832d-ea1e28bc413d>
Date: Tue, 18 Feb 2014 22:28:57 +0000 (+0000)
Subject: add exception to DataOut::add_data_vector if DataVectorType::type_automatic can not... 
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c57290188c0c72b88ed857e2faa707faf63b05c0;p=dealii-svn.git

add exception to DataOut::add_data_vector if DataVectorType::type_automatic can not uniquely determine the type

git-svn-id: https://svn.dealii.org/trunk@32510 0785d39b-7218-0410-832d-ea1e28bc413d
---

diff --git a/deal.II/source/numerics/data_out_dof_data.cc b/deal.II/source/numerics/data_out_dof_data.cc
index db456bc6eb..2693a91a52 100644
--- a/deal.II/source/numerics/data_out_dof_data.cc
+++ b/deal.II/source/numerics/data_out_dof_data.cc
@@ -740,6 +740,11 @@ add_data_vector (const VECTOR                             &vec,
   DataVectorType actual_type = type;
   if (type == type_automatic)
     {
+      // in the rare case that someone has a DGP(0) attached, we can not decide what she wants here:
+      Assert((dofs == 0) || (triangulation->n_active_cells() != dofs->n_dofs()),
+          ExcMessage("Unable to determine the type of vector automatically because the number of DoFs "
+              "is equal to the number of cells. Please specify DataVectorType."));
+
       if (vec.size() == triangulation->n_active_cells())
         actual_type = type_cell_data;
       else