[vtkusers] vtkStructuredPoints set origin

[Burlen]

Hi, I am using vtkStructuredPoints to visualize some scalar data, in a set of 
2d boxes that fit together like a checker board. Each square is a 
vtkStructuredPoints dataset which is appended together to form the board. My 
data files are defined as a uniform grid that defines the location of where 
the scalars are located. each square of the board has a uniform grid, and the 
data values are located on grid centers, according to our data format(as 
opposed to the default for vtk where the scalars are located on the grid 
intersections). The problem I am having is that there are empty strips 
between the squares. This because I am using structured points and adding 
dx/2 and dy/2 to the origin, to get my scalar data on the correct worldspace 
location.  Its like the bounds of my data is coming out dx by dy too short 
(1/2 each side). Is there any easy way to get VTK to fill in between 
squares?? There are potentially a lot of squares and each one has potentially 
very high resolution so I need some efficient way of doing this. Can anyone 
offer some advise?

see what I mean here:
http://quaoar.sr.unh.edu/images/pogo_image.png