[Numpy-discussion] "arg" searchsorted
Bryan Van de Ven
bryanv@continuum...
Mon Mar 26 16:34:11 CDT 2012
I recently got asked about an "arg" version of searchsorted, basically a
version that could take a sorter as an additional argument. For instance:
In [13]: a = np.array([5,6,8,1,6,9,0])
In [14]: s = np.argsort(a)
In [17]: s
Out[17]: array([6, 3, 0, 1, 4, 2, 5])
In [18]: np.searchsorted(a, [1.5, 7.2], sorter=sorter)
Out[18]: array([2, 5])
In [19]: np.searchsorted(a, -1.5, sorter=s)
Out[19]: 0
In [20]: np.searchsorted(a, 11.5, sorter=s)
Out[20]: 7
In [21]: np.searchsorted(a, 8.5, sorter=s)
Out[21]: 6
In [32]: np.searchsorted(a, 6, side='left', sorter=sorter)
Out[32]: 3
In [33]: np.searchsorted(a, 6, side='right', sorter=sorter)
Out[33]: 5
I've already implemented this, I wanted to ping the list and see if
there were any thoughts about this small feature. Or should I just
submit a PR for consideration?
Thanks,
Bryan
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