[vtkusers] creating imagedata from a 2D double array.

[Mallya, Yogish (CORP, GEITC)]

You haven't allocated memory for imageData (you have allocated memory for
imageData1). 


-----Original Message-----
From: S, Sripriya (MED) [mailto:SripriyaS at geind.ge.com]
Sent: Tuesday, January 15, 2002 9:35 AM
To: vtkusers at public.kitware.com
Subject: [vtkusers] creating imagedata from a 2D double array.


hi,

i am trying to create an image from a 2D double array which is 512x512 in
size. the code which does this is as below:

            vtkImageData *imageData1=vtkImageData::New();
	imageData1->SetExtent(0,512,0,512,0,1);
	imageData1->SetWholeExtent(0,512,0,512,0,1) ;
	imageData1->SetUpdateExtent(0,512,0,512,0,1);
	imageData1->SetUpdateExtentToWholeExtent();
	//imageData1->Update();
	imageData1->AllocateScalars();

            id=0;
	for(y=0;y<512;y++)
	{
		for(x=0;x<512;x++)
		{
	
imageData->GetPointData()->GetScalars()->SetScalar(id,outpixel[y][x]);
			id++;
		}
	}
   
	/* display the projection of the image */
	vtkImageViewer  *viewer1= vtkImageViewer::New();
	viewer1->SetInput(imageData);
	viewer1->SetColorWindow (225);
	viewer1->SetColorLevel(100);
	viewer1->Render(); 

i want to display this image using vtkImageViewer. i get the following
error: 

The instruction at "0x100b6af1" referenced memory at "0x08f31000". The
memory could not be "written".

while i debug i get this error,

unhandled exception in filename.exe(VTKDLL.DLL) access voilation.

where am i wrong??

thanks in advance
regards
priya




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