[vtkusers] problem in setPrefix(",,,,,") plzzzzzzzz help

[rohit paliwal]

hi to all..

i'am haviing problem in in reading tha data from the specified
location....The program is compling properly,but while run time is show the
followinf error:

1) ERROR: In C:\martink\vtk42\VTK\IO\vtkVolume16Reader.cxx, line 334
vtkVolume16Reader (0x055F0D80): Can't find file:
c:/VTK_DATA_ROOT/Data/headsq/quarter.1

2) ERROR: In C:\martink\vtk42\VTK\Graphics\vtkPolyDataNormals.cxx, line 88
vtkPolyDataNormals (0x055F2128): No data to generate normals for!

I have tried using \ / \\ // but result is same....

I'am using Visual studio 6.0 as IDE.... the following is my code...


// This example reads a volume dataset, extracts an isosurface that
// represents the skin and displays it.

#include "vtkRenderer.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkVolume16Reader.h"
#include "vtkPolyDataMapper.h"
#include "vtkActor.h"
#include "vtkOutlineFilter.h"
#include "vtkCamera.h"
#include "vtkProperty.h"
#include "vtkPolyDataNormals.h"
#include "vtkContourFilter.h"

int main ()
{


  // Create the renderer, the render window, and the interactor. The
renderer
  // draws into the render window, the interactor enables mouse- and
  // keyboard-based interaction with the data within the render window.
  //
  vtkRenderer *aRenderer = vtkRenderer::New();
  vtkRenderWindow *renWin = vtkRenderWindow::New();
    renWin->AddRenderer(aRenderer);
  vtkRenderWindowInteractor *iren = vtkRenderWindowInteractor::New();
    iren->SetRenderWindow(renWin);

  // The following reader is used to read a series of 2D slices (images)
  // that compose the volume. The slice dimensions are set, and the
  // pixel spacing. The data Endianness must also be specified. The reader
  // usese the FilePrefix in combination with the slice number to construct
  // filenames using the format FilePrefix.%d. (In this case the FilePrefix
  // is the root name of the file: quarter.)
  vtkVolume16Reader *v16 = vtkVolume16Reader::New();
    v16->SetDataDimensions (512,512);
    v16->SetImageRange (1,40);
    v16->SetDataByteOrderToLittleEndian();
    v16->SetFilePrefix("c:/VTK_DATA_ROOT/Data/headsq/quarter");
    v16->SetDataSpacing (3.2, 3.2, 1.5);

  // An isosurface, or contour value of 500 is known to correspond to the
  // skin of the patient. Once generated, a vtkPolyDataNormals filter is
  // is used to create normals for smooth surface shading during rendering.
  vtkContourFilter *skinExtractor = vtkContourFilter::New();
    skinExtractor->SetInput((vtkDataSet *) v16->GetOutput());
    skinExtractor->SetValue(0, 500);
  vtkPolyDataNormals *skinNormals = vtkPolyDataNormals::New();
    skinNormals->SetInput(skinExtractor->GetOutput());
    skinNormals->SetFeatureAngle(60.0);
  vtkPolyDataMapper *skinMapper = vtkPolyDataMapper::New();
    skinMapper->SetInput(skinNormals->GetOutput());
    skinMapper->ScalarVisibilityOff();
  vtkActor *skin = vtkActor::New();
    skin->SetMapper(skinMapper);

  // An outline provides context around the data.
  //
  vtkOutlineFilter *outlineData = vtkOutlineFilter::New();
    outlineData->SetInput((vtkDataSet *) v16->GetOutput());
  vtkPolyDataMapper *mapOutline = vtkPolyDataMapper::New();
    mapOutline->SetInput(outlineData->GetOutput());
  vtkActor *outline = vtkActor::New();
    outline->SetMapper(mapOutline);
    outline->GetProperty()->SetColor(0,0,0);

  // It is convenient to create an initial view of the data. The FocalPoint
  // and Position form a vector direction. Later on (ResetCamera() method)
  // this vector is used to position the camera to look at the data in
  // this direction.
  vtkCamera *aCamera = vtkCamera::New();
    aCamera->SetViewUp (0, 0, -1);
    aCamera->SetPosition (0, 1, 0);
    aCamera->SetFocalPoint (0, 0, 0);
    aCamera->ComputeViewPlaneNormal();

  // Actors are added to the renderer. An initial camera view is created.
  // The Dolly() method moves the camera towards the FocalPoint,
  // thereby enlarging the image.
  aRenderer->AddActor(outline);
  aRenderer->AddActor(skin);
  aRenderer->SetActiveCamera(aCamera);
  aRenderer->ResetCamera ();
  aCamera->Dolly(1.5);

  // Set a background color for the renderer and set the size of the
  // render window (expressed in pixels).
  aRenderer->SetBackground(1,1,1);
  renWin->SetSize(640, 480);

  // Note that when camera movement occurs (as it does in the Dolly()
  // method), the clipping planes often need adjusting. Clipping planes
  // consist of two planes: near and far along the view direction. The
  // near plane clips out objects in front of the plane; the far plane
  // clips out objects behind the plane. This way only what is drawn
  // between the planes is actually rendered.
  aRenderer->ResetCameraClippingRange ();

  // Initialize the event loop and then start it.
  iren->Initialize();
  iren->Start();

  // It is important to delete all objects created previously to prevent
  // memory leaks. In this case, since the program is on its way to
  // exiting, it is not so important. But in applications it is
  // essential.
  v16->Delete();
  skinExtractor->Delete();
  skinNormals->Delete();
  skinMapper->Delete();
  skin->Delete();
  outlineData->Delete();
  mapOutline->Delete();
  outline->Delete();
  aCamera->Delete();
  iren->Delete();
  renWin->Delete();
  aRenderer->Delete();

  return 0;
}

Please anyone can hel me out....????
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