Re: [deal.II] Re: KDTree implementation error

2020-07-24 Thread heena patel
Dear Luca,
I am using 9.2 version and the
implementation I try to follow  from your presentation at SISSA 2018 but it
gives me error. Following are the lines I added to step-1. I want to
implement K nearest neighbor. I will work on your suggestion.
*#include *


*Point<2>  p;   KDTree<2> tree(10,triangulation.get_vertices());   auto w =
tree.get_closest_points(p, 3);*

Regards,
Heena


On Fri, Jul 24, 2020 at 8:30 AM Luca Heltai  wrote:

> If you are using version 9.3pre of deal.II, kdtree was removed. Use RTree
> instead, which is faster and more flexible.
>
> Luca
>
> Il giorno 24 lug 2020, alle ore 05:41, heena patel 
> ha scritto:
>
> 
> Dear Bruno,
>I had already added kdree.h header file,
> check the question again. But it seems it does not read KDTree; something
> is not compatible between class and header file.
>
> Regards,
> Heena
>
> On Thu, Jul 23, 2020 at 9:03 PM Bruno Turcksin 
> wrote:
>
>> Heena,
>>
>> You are missing an include. Try adding #include <
>> deal.II/numerics/kdtree.h
>> >
>>
>> 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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>> 
>> .
>>
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> 
> .
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Re: [deal.II] Re: KDTree implementation error

2020-07-24 Thread Luca Heltai
If you are using version 9.3pre of deal.II, kdtree was removed. Use RTree 
instead, which is faster and more flexible. 

Luca

> Il giorno 24 lug 2020, alle ore 05:41, heena patel  ha 
> scritto:
> 
> 
> Dear Bruno,
>I had already added kdree.h header file, check 
> the question again. But it seems it does not read KDTree; something is not 
> compatible between class and header file.
> 
> Regards,
> Heena
> 
>> On Thu, Jul 23, 2020 at 9:03 PM Bruno Turcksin  
>> wrote:
>> Heena,
>> 
>> You are missing an include. Try adding #include 
>> 
>> 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
>> 
>> -- 
>> The deal.II project is located at http://www.dealii.org/
>> For mailing list/forum options, see 
>> https://groups.google.com/d/forum/dealii?hl=en
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> 
> -- 
> The deal.II project is located at http://www.dealii.org/
> For mailing list/forum options, see 
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Re: [deal.II] Re: KDTree implementation error

2020-07-23 Thread heena patel
Dear Bruno,
   I had already added kdree.h header file,
check the question again. But it seems it does not read KDTree; something
is not compatible between class and header file.

Regards,
Heena

On Thu, Jul 23, 2020 at 9:03 PM Bruno Turcksin 
wrote:

> Heena,
>
> You are missing an include. Try adding #include  >
>
> 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
>>
> --
> The deal.II project is located at http://www.dealii.org/
> For mailing list/forum options, see
> https://groups.google.com/d/forum/dealii?hl=en
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> 
> .
>

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[deal.II] Re: KDTree implementation error

2020-07-23 Thread Bruno Turcksin
Heena,

You are missing an include. Try adding #include 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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