[vtkusers] vtkImageChangeInformation changes ScalarType?

[Bill Lorensen]

ImageChangeInformation does not change the scalar type, only origin, 
spacing and extents (if requested). I asked if the change filter was 
connected to the reader  because creating an ImageChangeInformation without 
an input will produce an output with scalar type double.

Did you do an Update on the ChangeInformationFilter before checking its 
output scalar type?

Bill

At 10:07 AM 2/28/2007, Michael Knopke wrote:
>Hi Bill,
>
>thanks for reply,
>
>yes I’m 100% sure that it’s connected to the pipeline. I didn’t 
>notice it before only now that I’ve tried connecting vtkImagePlaneWidget 
>to the VolumeReader.
>
>When using v16 directly as Input to vtkImagePlaneWidget everything works 
>as expected but the sliceplane is at the wrong place (because origin is 
>not centered).
>Using vtkChangeImageInformation->CenterImageOn() puts the volume (and 
>therefore the sliceplane) centered to Origin (the place I need it to be) 
>BUT then the reslice-output on the plane
>is wrong (like if Window/Level is not set correctly, but changing those 
>doesn’t help).
>It’s obviously a problem of sclartype conversion. The strange thing is 
>that when using v16->changeImageInformation->vtkImageReslice does give me 
>the correct output.
>
>I’m using cvs at the moment, but will try with 5.02 again.
>
>Regards
>
>Michael
>
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