[Numpy-discussion] bug in genfromtxt with missing values?

[Pierre GM]

On Jan 24, 2011, at 11:47 PM, Skipper Seabold wrote:

> Am I misreading the docs or missing something?  Consider the following
> adapted from here:
> http://docs.scipy.org/doc/numpy/user/basics.io.genfromtxt.html
> 
> from StringIO import StringIO
> import numpy as np
> 
> data = "1, 2, 3\n4, ,5"
> 
> np.genfromtxt(StringIO(data), delimiter=",", names="a,b,c",
> missing_values=" ", filling_values=0)
> array([(1.0, 2.0, 3.0), (4.0, nan, 5.0)],
>      dtype=[('a', '<f8'), ('b', '<f8'), ('c', '<f8')])
> 
> np.genfromtxt(StringIO(data), delimiter=",", names="a,b,c",
> missing_values={'b':" "}, filling_values={'b' : 0})
> array([(1.0, 2.0, 3.0), (4.0, 0.0, 5.0)],
>      dtype=[('a', '<f8'), ('b', '<f8'), ('c', '<f8')])
> 
> Unless I use the dict for missing_values, it doesn't fill them in.
> 

It's probably a bug . Mind opening a ticket ? I'll try to care of it when I can.
Thx in advance
P.