I often find a need to do the type of comparison done by function shown below. I suspect that this would be more efficient for large arrays if implemented direction in C. Is there any possibility of adding something like this to NumPy?
def three_way(x, y): """ This function performs a 3-way comparison on `x` and `y`, which must be either lists or arrays of compatible shape. Each pair of items or elements-- let's call them x[i] and y[i]--are compared. The corresponding element in the output array is 1 if `x[i]` is greater then `y[i]`, -1 of `x[i]` is less, and zero if the two are equal. """ numpy.greater(y, x).astype(int) - numpy.less(y, x).astype(int) Phillip
_______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org https://mail.scipy.org/mailman/listinfo/numpy-discussion
