[vtkusers] saving vtkGraph to graphviz dot-files

[Grothausmann, Roman Dr.]

Just for those who stumble upon this. I got this working in both directions:

https://github.com/romangrothausmann/VTK-CLIs/blob/master/vtp2dot.cxx
https://github.com/romangrothausmann/VTK-CLIs/blob/master/dot2vtp.cxx

On 07/02/13 13:29, Jeff Baumes wrote:
> The problem is that vtkGraph (the superclass) is abstract and does not specify
> directionality. You should determine whether vtkPolyDataToGraph outputs a
> vtkDirectedGraph or vtkUndirectedGraph and store the output in a variable of
> that type before sending it to write_graph.
>
> Jeff
>
>
> On Thu, Feb 7, 2013 at 5:01 AM, Dr. Roman Grothausmann
> <__grothausmann.roman at mh-hannover.de__> wrote:
> Dear mailing list members,
>
>
> It seems there is no vtk-Filter to save a vtkGraph as a graphviz dot-file.
> Therefore, I tried to create a simple program for that but it fails during
> compilation with:
>
>
> /usr/include/boost/graph/graphviz.hpp:297:5: required from ‘void
> boost::write_graphviz(std::ostream&, const Graph&, typename
> boost::enable_if_c<boost::is_base_and_derived<boost::vertex_list_graph_tag,
> typename boost::graph_traits<Graph>::traversal_category>::value,
> boost::graph::detail::no_parameter>::type) [with Graph = vtkGraph*; std::ostream
> = std::basic_ostream<char>; typename
> boost::enable_if_c<boost::is_base_and_derived<boost::vertex_list_graph_tag,
> typename boost::graph_traits<Graph>::traversal_category>::value,
> boost::graph::detail::no_parameter>::type = boost::graph::detail::no_parameter]’
> /home/grothama/vtk/graphviz-vtk/vtp2dot_01.cxx:47:38: required from here
> /usr/include/boost/graph/graphviz.hpp:255:61: error: no type named
> ‘directed_category’ in ‘struct boost::graph_traits<vtkGraph*>’
> /usr/include/boost/graph/graphviz.hpp:256:42: error: no type named
> ‘directed_category’ in ‘struct boost::graph_traits<vtkGraph*>’
> make[2]: *** [CMakeFiles/vtp2dot_01.dir/vtp2dot_01.cxx.o] Error 1
>
>
> Am I missing something in my code (see attached zip)?
>
> Any help or hints are very much appreciated
> Roman
> _____
>
>
> ////convert a graph stored in a vtp-file to a dot-file (graphviz)
>
>
> #include <vtkSmartPointer.h>
> #include <vtkXMLPolyDataReader.h>//for vtp-files
> #include <vtkPolyDataToGraph.h>
>
> #include "vtkBoostGraphAdapter.h"
> #include <boost/graph/graphviz.hpp> // For writing graphs to a file
>
>
> int main(int argc, char* argv[]){
> if( argc != 3 )
> {
> std::cerr << "Usage: " << argv[0];
> std::cerr << " inputMesh";
> std::cerr << " outputFile";
> std::cerr << std::endl;
> return EXIT_FAILURE;
> }
>
> if(!(strcasestr(argv[1],".vtp"))) {
> std::cout << "The input should end with .vtp" << std::endl;
> return -1;
> }
>
> if(!(strcasestr(argv[2],".dot"))) {
> std::cout << "The input should end with .dot" << std::endl;
> return -1;
> }
>
>
> vtkSmartPointer<vtkXMLPolyDataReader> reader =
> vtkSmartPointer<vtkXMLPolyDataReader>::New();
>
> //reader->SetFileName(inputFileName);
> reader->SetFileName(argv[1]);
> reader->Update();
>
> vtkSmartPointer<vtkPolyDataToGraph> polyDataToGraphFilter=
> vtkSmartPointer<vtkPolyDataToGraph>::New();
> polyDataToGraphFilter->SetInputConnection(reader->GetOutputPort());
> polyDataToGraphFilter->Update();
>
> vtkGraph* graph= polyDataToGraphFilter->GetOutput();
>
> std::ofstream fout(argv[2]);
> boost::write_graphviz(fout, graph);
>
>
> return EXIT_SUCCESS;
> }
>
>
> --
> Dr. Roman Grothausmann
>
> Tomographie und Digitale Bildverarbeitung
> Tomography and Digital Image Analysis
>
> Institut für Funktionelle und Angewandte Anatomie, OE 4120
> Medizinische Hochschule Hannover
> Carl-Neuberg-Str. 1
> D-30625 Hannover
>
> Tel. __+49 511 532-9574__
>
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-- 
Dr. Roman Grothausmann

Tomographie und Digitale Bildverarbeitung
Tomography and Digital Image Analysis

Institut für Funktionelle und Angewandte Anatomie, OE 4120
Medizinische Hochschule Hannover
Carl-Neuberg-Str. 1
D-30625 Hannover

Tel. +49 511 532-2900