From: Rene Gassmoeller <rene.gassmoeller@mailbox.org>
Date: Thu, 28 May 2020 18:17:39 +0000 (-0700)
Subject: Improve tensor dimension check
X-Git-Tag: v9.3.0-rc1~1523^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=340590804a387aaacfe6082766d13d71b2407c97;p=dealii.git

Improve tensor dimension check
---

diff --git a/source/base/data_out_base.cc b/source/base/data_out_base.cc
index a2642d1ef3..eb035a2db7 100644
--- a/source/base/data_out_base.cc
+++ b/source/base/data_out_base.cc
@@ -5415,13 +5415,24 @@ namespace DataOutBase
                   {
                     vtk_data[0][0] = data_vectors(first_component, n);
                   }
-                else if ((size == 4) || (size == 9))
-                  // 2D, 4 elements or 3D 9 elements
+                else if (size == 4)
+                  // 2D, 4 elements
                   {
                     for (unsigned int c = 0; c < size; ++c)
                       {
                         const auto ind =
-                          Tensor<2, spacedim>::unrolled_to_component_indices(c);
+                          Tensor<2, 2>::unrolled_to_component_indices(c);
+                        vtk_data[ind[0]][ind[1]] =
+                          data_vectors(first_component + c, n);
+                      }
+                  }
+                else if (size == 9)
+                  // 3D 9 elements
+                  {
+                    for (unsigned int c = 0; c < size; ++c)
+                      {
+                        const auto ind =
+                          Tensor<2, 3>::unrolled_to_component_indices(c);
                         vtk_data[ind[0]][ind[1]] =
                           data_vectors(first_component + c, n);
                       }