<div dir="ltr"><div style="text-align:start;text-indent:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial"><div><div><div><div><span style="font-size:12.8px">Good afternoon</span><span style="font-size:12.8px">.</span><br><br></div></div></div><span id="gmail-m_1992109487122447782gmail-result_box" class="gmail-m_1992109487122447782gmail-short_text" lang="en" style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-transform:none;white-space:normal;word-spacing:0px"><span class="gmail-m_1992109487122447782gmail-"><span id="gmail-m_1992109487122447782gmail-result_box" class="gmail-m_1992109487122447782gmail-short_text" lang="en"><span class="gmail-m_1992109487122447782gmail-">I have structure</span></span></span></span></div><div><span class="gmail-m_1992109487122447782gmail-short_text" lang="en"><span class="gmail-m_1992109487122447782gmail-"><span class="gmail-m_1992109487122447782gmail-short_text" lang="en"><span class="gmail-m_1992109487122447782gmail-"><span style="font-size:12.8px">std::vector<Dune::FieldVector<double ,GridType::dimensionworld>> velocity(num_cell);;</span></span></span></span></span></div><div><span class="gmail-m_1992109487122447782gmail-short_text" lang="en"><span class="gmail-m_1992109487122447782gmail-"><span class="gmail-m_1992109487122447782gmail-short_text" lang="en"><span class="gmail-m_1992109487122447782gmail-"><span style="font-size:12.8px">num_cell is number of cells in my grid from the size of Dune::LeafMultipleCodimMultipleGeomTypeMapper<GridType,Dune::MCMGElementLayout> object.</span></span></span></span></span></div><div><span class="gmail-m_1992109487122447782gmail-short_text" lang="en"><span class="gmail-m_1992109487122447782gmail-"><span class="gmail-m_1992109487122447782gmail-short_text" lang="en"><span class="gmail-m_1992109487122447782gmail-"><span style="font-size:12.8px">I store 3 components of speed in my structure.</span></span></span></span></span></div><div><span class="gmail-m_1992109487122447782gmail-short_text" lang="en"><span class="gmail-m_1992109487122447782gmail-"><span class="gmail-m_1992109487122447782gmail-short_text" lang="en"><span class="gmail-m_1992109487122447782gmail-"><span style="font-size:12.8px"><br></span></span></span></span></span></div><div><span class="gmail-m_1992109487122447782gmail-short_text" lang="en"><span class="gmail-m_1992109487122447782gmail-"><span class="gmail-m_1992109487122447782gmail-short_text" lang="en"><span class="gmail-m_1992109487122447782gmail-"><span style="font-size:12.8px">But I didn't catch, how I can visualize my speed with addCellData in object of Dune::VTKSequenceWriter class. Simple structure, like temperature or concentration, are visualized correctly, but structure with several components - not.</span></span></span></span></span></div><div><span class="gmail-m_1992109487122447782gmail-short_text" lang="en"><span class="gmail-m_1992109487122447782gmail-"><span class="gmail-m_1992109487122447782gmail-short_text" lang="en"><span class="gmail-m_1992109487122447782gmail-"><span style="font-size:12.8px">I got an error:</span></span></span></span></span></div><div><span class="gmail-m_1992109487122447782gmail-short_text" lang="en"><span class="gmail-m_1992109487122447782gmail-"><span class="gmail-m_1992109487122447782gmail-short_text" lang="en"><span class="gmail-m_1992109487122447782gmail-"><span style="font-size:12.8px"><br></span></span></span></span></span></div><div><span class="gmail-m_1992109487122447782gmail-short_text" lang="en"><span class="gmail-m_1992109487122447782gmail-"><span class="gmail-m_1992109487122447782gmail-short_text" lang="en"><span class="gmail-m_1992109487122447782gmail-"><div><span style="font-size:12.8px">dune-grid/dune/grid/io/file/vtk/function.hh:123:47: error: cannot convert ‘const value_type {aka const Dune::FieldVector<double, 3>}’ to ‘double’ in return</span></div><div><span style="font-size:12.8px">       return v[mapper.index(e)*ncomps_+mycomp_];</span></div><div><span style="font-size:12.8px"><br></span></div></span></span></span></span></div><div><span class="gmail-m_1992109487122447782gmail-short_text" lang="en"><span class="gmail-m_1992109487122447782gmail-"><span class="gmail-m_1992109487122447782gmail-short_text" lang="en"><span class="gmail-m_1992109487122447782gmail-"><span style="font-size:12.8px">Could you explain me, please, how that problem can be solved? </span><br><br></span></span></span></span></div><span id="gmail-m_1992109487122447782gmail-result_box" class="gmail-m_1992109487122447782gmail-short_text" lang="en" style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-transform:none;white-space:normal;word-spacing:0px"><span class="gmail-m_1992109487122447782gmail-"><span id="gmail-m_1992109487122447782gmail-result_box" class="gmail-m_1992109487122447782gmail-short_text" lang="en"><span class="gmail-m_1992109487122447782gmail-">Best regards,<br></span></span></span></span></div><span id="gmail-m_1992109487122447782gmail-result_box" class="gmail-m_1992109487122447782gmail-short_text" lang="en" style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial"><span class="gmail-m_1992109487122447782gmail-"><span id="gmail-m_1992109487122447782gmail-result_box" class="gmail-m_1992109487122447782gmail-short_text" lang="en"><span class="gmail-m_1992109487122447782gmail-">Ilya Ponomarev.</span></span></span></span><br></div>