search for: 09s

...ng a running 5-day median on a large matrix. Thanks to Martin Maechler <maechler@stat.math.ethz.ch> and Ray Brownrigg <Ray.Brownrigg@mcs.vuw.ac.nz> for responding. I ended up writing C code (and an R interface) to do it, which is about 1000x faster than the naive method! (72s became .09s on a 223 x 520 matrix). I added a running mean function too, which is very simple and is about 15x faster than apply(..., filter, ...). I've packaged the code as <http://cran.r-project.org/src/contrib/Devel/runStat_1.1.tar.gz> The key insight was that it *is* in fact a good idea to c...

Hi, how can i use operation + , - , / with veriable format DATES? for example i have two variable a <- 18/08/2008 and b <- 18/09/2010 and i want to calculate a-b ?? thank you? [[alternative HTML version deleted]]

Hello I am trying to run Combine Z5 under wine (my version is 0.9.4) and have several probems has anyone succeeded in running this very useful program for macrophotography ? http://www.hadleyweb.pwp.blueyonder.co.uk/CZ5/combinez5.htm Thanks Fungi

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hi folks, in my (unlucky) first test of ogg vs other encoders, i found a case where wma and mp3pro sound much better than ogg at 64k. can anyone suggest a setting that i haven't tried yet that can rival the wma and mp3pro samples at 64k? it's the "gravel effect" that is troublesome. the part in question is the first 15 seconds of this wave file: