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calculating max diff for a 1D sequence
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| def fnx(arr): | |
| ''' | |
| pass in: NumPy 1d array | |
| returns: 3-tuple (idx_min_val, idx_max_val, max_diff) | |
| ''' | |
| arr = arr.reshape(-1, 1) | |
| arr_diff = arr.T - arr | |
| idx = NP.unravel_index(arr_diff.argmax(), arr_diff.shape) | |
| return (idx[0], idx[1], arr_diff[idx]) |
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