Sorting coordinates array

[Maarten van Reeuwijk]

I'm a newbie to Python, so sorry for this maybe trivial question. I have a
numpy array with coordinates, which I want to sort, for example first on
z-coordinate, then x and lastly y-coordinate. So an array like:

[[0, 0, 0], [0, 2, 1], [1, 1, 0], [0, 1, 1]]

should look after sorting like

[[0, 0, 0], [1, 1, 0], [0, 1, 1], [0, 2, 1]]

I tried the sort command, but that command mangles my coordinate pairs. Also
converting the array to a list doesn't seem to improve the results. How
should I tackle this problem?

TIA, Maarten

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Maarten van Reeuwijk                        Heat and Fluid Sciences
Phd student                             dept. of Multiscale Physics
www.ws.tn.tudelft.nl                 Delft University of Technology