Heena,
You are missing an include. Try adding #include <deal.II/numerics/kdtree.h
<https://dealii.org/current/doxygen/deal.II/kdtree_8h_source.html>>
Best,
Bruno
On Thursday, July 23, 2020 at 2:55:53 PM UTC-4, heena patel wrote:
>
>
> Dear all,
> I had tried to implement KDTree in step_1
> tutoria and header file for kdtree is added to the codel. It is as follows:
>
> void first_grid()
> {
>
> Triangulation<2> triangulation;
>
> GridGenerator::hyper_cube(triangulation);
> triangulation.refine_global(4);
>
>
> * Point<2> p; KDTree<2> tree(10,triangulation.get_vertices()); auto
> w = tree.get_closest_points(p, 3);*
> std::ofstream out("grid-1.svg");
> GridOut grid_out;
> grid_out.write_svg(triangulation, out);
> std::cout << "Grid written to grid-1.svg" << std::endl;
> }
>
>
>
> *It gives me error as below *
>
> /home/heena/Project/examples/step-1/step-1.cc:76:4: error: ‘KDTree’ was
> not declared in this scope
> KDTree<2> tree(10,triangulation.get_vertices());
> ^~~~~~
> /home/heena/Project/examples/step-1/step-1.cc:76:4: note: suggested
> alternative: ‘free’
> KDTree<2> tree(10,triangulation.get_vertices());
> ^~~~~~
> free
> /home/heena/Project/examples/step-1/step-1.cc:76:14: error: ‘tree’ was not
> declared in this scope
> KDTree<2> tree(10,triangulation.get_vertices());
> ^~~~
> /home/heena/Project/examples/step-1/step-1.cc:76:14: note: suggested
> alternative: ‘free’
> KDTree<2> tree(10,triangulation.get_vertices());
> ^~~~
> free
>
>
>
> Is there something missing?
>
>
>
> Regards,
> Heena
>
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