Aha - yeah. Sorry, using arrays works, but not lists. (important to know, though)
On 30 September 2013 19:11, Tiago de Paula Peixoto <[email protected]> wrote: > On 09/30/2013 07:09 PM, Rene Pfitzner wrote: > > Thanks Tiago! > > > > Let me just point out that the part > > > > mask.a = g.degree_property_map("out").a > 4 > > > > will (if you are using python 2.x) not give you what you most likely > would like to have, namely a list of boolean values containing the results > of the element wise comparisons of elements > g.degree_property_map("out").a[i]>4. Instead, for some strange reason, > you'll simply get the *value* True back, writing True to all elements in > mask.a ... instead, it seems to me, the only (fastest) way to do it is to > use map > > > > mask.a = map(lambda(x): x > 4, g.degree_property_map("out").a) > > > > .... so be careful. > > Are you sure? > > I get the following with python 2 and numpy 1.7.1: > > In [4]: arange(10) > Out[4]: array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]) > > In [5]: arange(10) > 2 > Out[5]: array([False, False, False, True, True, True, True, True, > True, True], dtype=bool) > > > Cheers, > Tiago > > -- > Tiago de Paula Peixoto <[email protected]> > > -- René Pfitzner, Dipl. Phys. Scientific assistant / Doctoral candidate ETH Zürich Chair of Systems Design +41-44-63-28478 [email protected] http://www.sg.ethz.ch/people/prene
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