speed of statistics.m

[Jaroslav Hajek]

On Wed, Oct 1, 2008 at 12:49 PM, Francesco Potorti` <Potorti at isti.cnr.it> wrote:
> I do not know whether this is a Debian problem or maybe corrected, but
> in Debian, using Octave from testing and from unstable I see that,
> contrary to my expectations, statistics is much slower in Octave 3.1:
>
> octave3.0> version
> ans = 3.0.1
> octave3.0> t=cputime;statistics(1:35000);cputime-t
> ans =  0.26002
> octave3.0> t=cputime;statistics(1:35000);cputime-t
> ans =  0.26001
> octave3.0> t=cputime;statistics(1:35000);cputime-t
> ans =  0.25602
>
>
> octave3.1> version
> ans = 3.1.51
> octave3.1> t=cputime;statistics(1:35000);cputime-t
> ans =  1.7001
> octave3.1> t=cputime;statistics(1:35000);cputime-t
> ans =  1.7161
> octave3.1> t=cputime;statistics(1:35000);cputime-t
> ans =  1.6521
>

`statistics' computes a number of characteristics. Could you identify
which one of them is causing the slowdown?

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-- 
RNDr. Jaroslav Hajek
computing expert
Aeronautical Research and Test Institute (VZLU)
Prague, Czech Republic
url: www.highegg.matfyz.cz