Dear John,
You don’t say how you write this "solution-…txt” file, so its difficult to say
exactly what the best course of action is. Do you know about the block_write()
<https://www.dealii.org/9.0.0/doxygen/deal.II/classVector.html#aef98e4994a6c0b20bb33b0290f8d607c>
and block_read()
<https://www.dealii.org/9.0.0/doxygen/deal.II/classVector.html#a57d77409b8591a13d5ee10c2e705593a>
functions? It looks to me like these already do what you’re trying to
implement here.
I hope that this helps.
Best,
Jean-Paul
> On 22 Feb 2019, at 09:13, yswang2...@sjtu.edu.cn wrote:
>
> Dear all,
>
>
> I am a beginner of deal ii and C++. I want to modify some codes in step-6. I
> want to load the solution from outside but I meet some problem and have no
> idea how to fix it. The following is my modification, I just add a function:
>
> template <int dim>
>
> void Step6<dim>::read_solution (const unsigned int cycle) const
>
> {
>
> int n = 0;
>
>
>
> ifstream File;
>
> File.open("solution-" + std::to_string(cycle) + ".txt");
>
> while(!File.eof())
>
> {
>
> File >> solution[n];
>
> n++;
>
> }
>
>
>
> File.close();
>
> }
>
> Thanks for your time and I know it’s a simple question.
>
>
>
> Bests,
>
> John
>
>
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