Re: [Paraview] [paraview] Cannot create object of type "vtkCSVImageReader"

papa ndéné NDIAYE Wed, 27 Apr 2011 07:47:43 -0700

I only changed "SERVER_MANAGER_SOURCES vtkCVSImageReader.cpp" to
"SERVER_MANAGER_SOURCES vtkCSV ImageReader.cpp" and the corresponding file
name. I didn't touch the class name (which was already vtkCSVImageReader)
neither in the xml, nor in the .h.
and I can't figure out why there is a *symbol lookup error *since I also
tried to build the *ExampleDockPanel *in the
paraview>example>plugin>Dockwidget and it works.


here I append my source code maybe the problem is that I didn't implement
the *New()* function?:
*vtkCSV ImageReader.cpp*:

vtkStandardNewMacro(vtkCSVImageReader);
int vtkCSVImageReader::RequestInformation (
   vtkInformation*,
   vtkInformationVector**,
   vtkInformationVector* outputVector)
{
   vtkInformation* outInfo = outputVector->GetInformationObject(0);

   return 1;
}

int vtkCSVImageReader::RequestData(
   vtkInformation*,
   vtkInformationVector**,
   vtkInformationVector* outputVector)
{
   vtkInformation* outInfo = outputVector->GetInformationObject(0);
   vtkStructuredGrid* output =
vtkStructuredGrid::SafeDownCast(outInfo->Get(vtkDataObject::DATA_OBJECT() )
);
   vtkPoints* pts= output->GetPoints();


vtkDataArray* dummy=vtkDataArray::CreateDataArray(VTK_FLOAT);
dummy->SetNumberOfTuples(8);
dummy->SetNumberOfComponents(3);
const float P1[3]={0.,0.,0.};
const float P2[3]={1.,0.,0.};
const float P3[3]={0.,1.,0.};
const float P4[3]={1.,1.,0.};
const float P5[3]={0.,0.,1.};
const float P6[3]={1.,0.,1.};
const float P7[3]={0.,1.,1.};
const float P8[3]={1.,1.,1.};
dummy->SetTuple(0, P1);
dummy->SetTuple(0, P2);
dummy->SetTuple(0, P3);
dummy->SetTuple(0, P4);
dummy->SetTuple(0, P5);
dummy->SetTuple(0, P6);
dummy->SetTuple(0, P7);
dummy->SetTuple(0, P8);
pts->SetData(dummy);

   return 1;
}


 *vtkCSV ImageReader.h*:
class vtkCSVImageReader : public vtkStructuredGridAlgorithm
{
public:
    static vtkCSVImageReader* New();
    vtkTypeMacro(vtkCSVImageReader,vtkStructuredGridAlgorithm);
    void PrintSelf(ostream& os, vtkIndent indent);

    virtual void SetFileName(const char* fname);
    virtual const char* GetFileName();
    virtual void SetFieldDelimiterCharacters(
       const char* delim);
    virtual const char* GetFieldDelimiterCharacters();

protected:
   vtkCSVImageReader();
   ~vtkCSVImageReader();

   int RequestInformation(
      vtkInformation*,
      vtkInformationVector**,
      vtkInformationVector*);

   int RequestData(
      vtkInformation*,
      vtkInformationVector**,
      vtkInformationVector*);

   vtkDelimitedTextReader * Reader;

private:
   vtkCSVImageReader(const vtkCSVImageReader&);
   void operator=(const vtkCSVImageReader&);
};


PS: I do include the vtkObjectFactory

Great thanks


2011/4/27 Utkarsh Ayachit <utkarsh.ayac...@kitware.com>

> Did you forget to change the class name in the XML?
>
> Utkarsh
>
> 2011/4/27 papa ndéné NDIAYE <pnwirefr...@gmail.com>:
> > Hi everyone,
> >
> > I am trying to make a reader and I get the error message above when
> trying
> > to open a file.
> > I am running Centos5 (64 bit)  and compiled paraview with Qt 4.6.3, VTK
> > 5.2.1 and CMAKE 2.8.4.
> > the same goes for my reader plugin.
> > Here is my CmakeList.txt:
> > cmake_minimum_required(VERSION 2.6)
> >      if(COMMAND cmake_policy)
> >       cmake_policy(SET CMP0003 NEW)
> >     endif(COMMAND cmake_policy)
> > FIND_PACKAGE(ParaView REQUIRED)
> > INCLUDE(${PARAVIEW_USE_FILE})
> > INCLUDE_DIRECTORIES(${INCLUDE_DIRECTORIES} ../)
> >
> > ADD_PARAVIEW_PLUGIN(CSVImage "1.0"
> >   SERVER_MANAGER_XML CSVImage.xml
> > SERVER_MANAGER_SOURCES vtkCVSImageReader.cpp
> > GUI_RESOURCE_FILES CSVImageGUI.xml
> > )
> >
> > and I get error:
> >
> > vtkProcessModule (0xb621b30): Cannot create object of type
> > "vtkCSVImageReader".
> > while processing
> > Message 0 = New
> >   Argument 0 = string_value {vtkCSVImageReader}
> >   Argument 1 = id_value {149}
> >
> >
> > when I change the CVS  to CSV (renaming the .cpp file too) I get another
> > error:
> >
> > paraview: symbol lookup error:
> > ~/dev/CVSreader/libCSVImage.so: undefined symbol:
> _ZN17vtkCSVImageReaderC1Ev
> >
> > which I do not understand since I built both paraview and the plugin on
> the
> > same computer
> >
> > hope someone could help me.
> >
> > Regards
> > papa
> >
> >
> >
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Re: [Paraview] [paraview] Cannot create object of type "vtkCSVImageReader"

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