[Paraview] selecting points on a 3d image

[Sara Rolfe]

Hello,

I think I'm narrowing down where my confusion is coming from.  I have  
tried using the selection inspector to select points by choosing the  
3d coordinates (which is not exactly what I'm trying to do).  However,  
the coordinate values don't correspond to the image size.  The image  
should be 128x128x128.  These coordinates seem to be 508x508x296.  Can  
someone explain how to get the point locations in the space of the  
original image, or show me where to look for this?

thanks,
Sara

On Feb 8, 2011, at 1:29 PM, Sara Rolfe wrote:

> Hello,
>
> I am attempting to use Paraview to display a 3d image (uniform  
> rectilinear grid) and select landmark points on an object in the  
> image.  Is there an easy way to do this, or does Paraview not  
> support this?
>
> The cell selection tool does not seem to be working on the image.  I  
> can create a contour from the object in the image and select points  
> from here, but the coordinates are different and I am not clear on  
> what the transformation between them is.
>
> Thanks,
> Sara
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