[vtkusers] about "SetFilePrefix"

[Àî±ö]

hi all..

I read the volume file,but there is no data inside it!!

vtkVolume16Reader* v16=vtkVolume16Reader::New();
v16->SetDataDimensions(64,64);
v16->SwapBytesOn();
v16->SetFilePrefix("c:/data/headsq/quarter.1");
v16->SetImageRange(1,93);
v16->SetDataSpacing(3.2,3.2,1.5);

and  sure I put the data(headsq\quarter) in the folder data directory.

but the output still rendered with empty data it seems that it can't find
the path to get the data...
i also did the following:
1)change "\" with "/" and "\\"..
2)download a new version of vtkdata files..
3)change the location of the data..
BUT NO Progress, the same proplem stell!!


> Errors in the background screen is:

>ERROR: In C:\martink\vtk40\VTK\Rendering\vtkPolyDataMapper.cxx, line 72
vtkOpenGLPolyDataMapper (0x003D8F18): Mapper has no input.

>ERROR: In C:\martink\vtk40\VTK\Rendering\vtkPolyDataMapper.cxx, line 72
vtkOpenGLPolyDataMapper (0x003D8F18): Mapper has no input.

>ERROR: In C:\martink\vtk40\VTK\Rendering\vtkPolyDataMapper.cxx, line 72
vtkOpenGLPolyDataMapper (0x003D8F18): Mapper has no input.

Could you tell me why and how to do? 

Thanks a lot.
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