[vtkusers] Copying a DataSet into a DataObject's field data

[Matt Zumwalt]

Hi all,
    I'm trying to figure out how to copy the contents of a DataSet into the 
field data of an existing DataObject 
ie:  I have created a sphere with a resolution of P points, passed the point 
data to an external process which returns a whole list of data which is 
broken into chunks of P scalar values.  I then read this data into a 
vtkDataSet as a set of arrays, each size P.   This DataSet may be used by 
multiple different objects and filters.
     Now I want to copy the DataSet's arrays of scalar values to the original 
sphere's field data.  What is the best/easiest way to go about this?
     I am working with Tcl at the moment, and looked at creating a 
vtkProgrammableAttributeDataFilter which takes two inputs (the sphere and the 
new DataSet), but I thought you all might have better ideas.

cheers,
 Matt Z
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MSc Candidate
Programme in Music Technology
Department of Electronics
University of York