Adil,
If you look in the output_results
<https://dealii.org/current/doxygen/deal.II/step_29.html#codeUltrasoundProblemoutput_resultscode>
section. You can see the following code:
std::vector<std::string> solution_names;
solution_names.emplace_back("Re_u");
solution_names.emplace_back("Im_u");
data_out.add_data_vector
<https://dealii.org/current/doxygen/deal.II/classDataOut__DoFData.html#ace4b76e565ba0701c4d32c26075ed3b9>(solution,
solution_names);
What happens is that the first component of solution is associated with
Re_u and the second component with Im_u.
Best,
Bruno
On Tuesday, August 20, 2019 at 12:36:41 AM UTC-4, Muhammad Adil wrote:
>
> Hi Everone,
> In the tutorial step-29 of deal.II 8.3.0, the solution in paraview can be
> visualized as Real, Imaginary and Intensity.
> Intensity is calculated manually in the tutorial and visualized but how
> paraview knows that solution ( u[i][0] and u[i][1] ) consits of two parts,
> one u[i][0] is real and the other u[i][1] is imaginary.
> Because there is nothing in the mentioned in the code. Pleae anyone
> explain?
>
> Adil
>
> [image: step-29 1.png][image: step-29 3.png][image: step-29 2.png]
>
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