[Matplotlib-users] prctile not interpolating

[David S. <dav...@rs...>]

I would like to find percentiles, with interpolation where needed, but 
the matplotlib prctile seems to be different to matlab in this respect:

In [1]: x = array([ 3.0, 5.0, 7.0, 8.0, 9.0, 11.0 ])

In [2]: median(x)
Out[2]: 7.5

In [3]: prctile(x,50)
Out[3]: 8.0


is there a function available which does include interpolation, or 
should I just write my own? (I'd also like 10th and 90th percentiles for 
example).

Thanks, Dave