lør, 07 03 2009 kl. 17:00 +0100, skrev Jaroslav Hajek: > Throughout this whole conversation, I totally forgot that Octave now > supports NAs. In view of this fact, I think it would be completely > sensible if the statistics functions automatically skipped NAs but not > NaNs, unless it severely hurts performance. This is what R does, I > think. In this way we can get sort of the best of both worlds. > I'm not even sure it would mean an incompatibility with Matlab, since > NaNs created by the NaN function or invalid ops will still work > normally. > I won't make any patches unless we have a more wide agreement, but my > eventual vote is clear.
I've always felt that NA wasn't being used as much as it should. I use it quite a bit in my own functions. The only place I know of in Octave that actively uses NA are the interpolation functions. These use NA as extrapolation values rather than NaN (like Matlab). I haven't seen any compatibility issues since we made this change. Anyway, I would definitely support skipping NA's in the statistics functions. But perhaps the performance drop would be too big? Søren ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ Octave-dev mailing list Octave-dev@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/octave-dev
