Hey Jason,

Have a look at `python -m pyqtgraph.examples.ImageView`.
I know 3-channel is really easy: each of red, green and blue would be
assigned to a different channel. The expected format for that would be [z
position][col][row][channel] (row and col can be switched via
`pg.setConfigOptions(imageAxisOrder="row-major", and in fact performs
better that way)`. You could do 4 channels by assigning them to CMYK (and
then transforming it to RGB; PIL will do this, or the math is easy enough
to do by hand/numpy)? I've never tried this, so I don't know how well it
would work in practice, but it should be easy enough.

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