Hello -- I'm a Numpy Newbie. I have a question for the Numpy gurus about comparisons of multiarray objects and arrays of booleans in particular. Back when I was checking out Numpy for an application, I read a note in the Ascher/Dubois/Hinsen/Hugunin/Oliphant manual about comparisons of multiarray objects. It said and still says: "Currently, comparisons of multiarray objects results in exceptions, since reasonable results (arrays of booleans) are not doable without non-trivial changes to the Python core. These changes are planned for Python 1.6, at which point array object comparisons will be updated." ( http://numpy.sourceforge.net/numdoc/HTML/numdoc.html ) Can anyone comment on what's happening with arrays of booleans in Numpy? I don't want to duplicate someone elses effort, but don't mind standing on someone elses shoulders. My application calls for operations on both non-sparse and sparce matrices. douglas
trainor@uic.edu writes:
Hello -- I'm a Numpy Newbie. I have a question for the Numpy gurus about comparisons of multiarray objects and arrays of booleans in particular.
Back when I was checking out Numpy for an application, I read a note in the Ascher/Dubois/Hinsen/Hugunin/Oliphant manual about comparisons of multiarray objects. It said and still says:
"Currently, comparisons of multiarray objects results in exceptions, since reasonable results (arrays of booleans) are not doable without non-trivial changes to the Python core. These changes are planned for Python 1.6, at which point array object comparisons will be updated." ( http://numpy.sourceforge.net/numdoc/HTML/numdoc.html )
Can anyone comment on what's happening with arrays of booleans in Numpy?
I believe that the passage you quote is referring to David Ascher's "Rich Comparisons" proposal. This is not in Python 1.6 and is not in Python 2.0 and nobody is currently working on it. The section in the manual should be revised.
participants (2)
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Charles G Waldman -
trainor＠uic.edu