numpy masked array puzzle

Joel Goldstick joel.goldstick at gmail.com
Sun Nov 17 22:29:37 CET 2013


On Sun, Nov 17, 2013 at 3:59 PM, Tom P <werotizy at freent.dd> wrote:
> I have two numpy arrays, xx and yy -
> (Pdb) xx
> array([0.78200000524520874, masked, masked, 0.37000000476837158,
>        0.72500002384185791, 0.60000002384185791, 0.69099998474121094,
>        0.78799998760223389, 0.65100002288818359, 0.11100000143051147,
>        masked, 0.7160000205039978, 0.54600000381469727,
>        0.43599998950958252, 0.63868808746337891, 0.027000000700354576,
>        masked, masked], dtype=object)
> (Pdb) yy
> array([-0.015120843222826226, -0.0080196081193390761, 0.02241851002495138,
>        -0.021720756657755306, -0.0095334465407607427,
>        -0.0063953867288363917, -0.013363615476044387,
>        0.0080645889792231359, -0.0056745213729654086,
>        -0.0071783823973457523, -0.0019400978318164389,
>        -0.0038670581150256019, 0.0048961156278229494, -0.01315129469368378,
>        -0.007727079344820257, -0.0042560259937610449,
>        0.0063857167196111056, 0.0024528141737232877], dtype=object)
> (Pdb)
> -- which gives a strange error -
>  stats.mstats.linregress(x, y)
> *** AttributeError: 'int' object has no attribute 'view'
> (Pdb)
>
> What is stranger I can't get the mask -
> (Pdb) np.ma.getmaskarray(xx)
> array([False, False, False, False, False, False, False, False, False,
>        False, False, False, False, False, False, False, False, False],
> dtype=bool)
> (Pdb)
>
> --
> https://mail.python.org/mailman/listinfo/python-list

Chances are you will get quicker answer in numpy group.  Someone here
might be able to help, but this is a general purpose python list.

-- 
Joel Goldstick
http://joelgoldstick.com



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