large arrays in python (scientific)

[Skip Montanaro]

    >> I have a data set that contains values for positions in 3D space.
    >> There are about 2 million data points (128x128x128).

    Terry> Do you actually have one value for each cell? Or do you just mean
    Terry> the number of possible cells? Are the values measured (a bit hard
    Terry> to believe for 2 million)? or generated by a function such as the
    Terry> one you want to fit?

A 128x128x128 data volume of measured data is not that hard to imagine.
Ever had a CT or MRI scan?  Poke around

    http://public.kitware.com/VTK/

a bit...

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