Re: [sc-dev] stable algorithm for statistic functions issue 78250

2007-07-05 Thread Niklas Nebel

Regina Henschel wrote:
I had a look at the source in interpr3.cxx and have made the proposed 
changes for the COVAR function. Although I'm a very beginner I think, 
that I'm able to change some of the other such functions too.


The changes need to calculate the mean in a first loop and than 
calculating the other results in a second loop. My question is, whether 
you want, that the functions are changed in that way. If yes, I would be 
glad, to do that job.


For COVAR it looks like this (based on OOF680_m18):


Yes, this looks very good and should be changed that way. Which other 
functions do you plan to modify?


Niklas

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Re: [sc-dev] stable algorithm for statistic functions issue 78250

2007-07-05 Thread Eike Rathke
Hi Regina,

On Thursday, 2007-07-05 10:34:37 +0200, Regina Henschel wrote:

 For COVAR it looks like this (based on OOF680_m18):

Very nice, indeed. Could you do us a favor though and base your changes
on a recent SRC680 milestone (latest available now is m219) instead of
OOF680, chances then are much higher that patches seamlessly apply.

Thanks
  Eike

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Re: [sc-dev] stable algorithm for statistic functions issue 78250

2007-07-05 Thread Regina Henschel

Hello Eike,

Eike Rathke schrieb:

Hi Regina,

On Thursday, 2007-07-05 10:34:37 +0200, Regina Henschel wrote:


For COVAR it looks like this (based on OOF680_m18):


Very nice, indeed. Could you do us a favor though and base your changes
on a recent SRC680 milestone (latest available now is m219) instead of
OOF680, chances then are much higher that patches seamlessly apply.



m219 is not on the mirrors and I have used CVS not yet. The m218 
tarballs are available on the mirros. I would then have to do another 18 
hours build. I own only a normal PC with WinXP. Nevertheless, that 
would be practicable for me. Would it be OK with the m218 version?


kind regards
Regina

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Re: [sc-dev] stable algorithm for statistic functions issue 78250

2007-07-05 Thread Tom Schindl

Hi,

Accessing CVS is not really a problem nowadays. Download one of the 
freely available IDEs (like Netbeans, Eclipse) and your are only away a 
few clicks from the source and patch tools. Eclipse even provides an 
specialized download for C++-Developers (CDT [1]  [2]) I'm not sure 
aboute netbeans but I think it also provides such a beast :-)


Tom

[1] http://www.eclipse.org/downloads/
[2] http://cdtdoug.blogspot.com/2007/06/introducing-cdt-for-windows.html


Regina Henschel schrieb:

Hello Eike,

Eike Rathke schrieb:

Hi Regina,

On Thursday, 2007-07-05 10:34:37 +0200, Regina Henschel wrote:


For COVAR it looks like this (based on OOF680_m18):


Very nice, indeed. Could you do us a favor though and base your changes
on a recent SRC680 milestone (latest available now is m219) instead of
OOF680, chances then are much higher that patches seamlessly apply.



m219 is not on the mirrors and I have used CVS not yet. The m218 
tarballs are available on the mirros. I would then have to do another 18 
hours build. I own only a normal PC with WinXP. Nevertheless, that 
would be practicable for me. Would it be OK with the m218 version?


kind regards
Regina

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Re: [sc-dev] stable algorithm for statistic functions issue 78250

2007-07-05 Thread Regina Henschel

Hello Niklas,

Niklas Nebel schrieb:

Regina Henschel wrote:
I had a look at the source in interpr3.cxx and have made the proposed 
changes for the COVAR function. Although I'm a very beginner I think, 
that I'm able to change some of the other such functions too.


The changes need to calculate the mean in a first loop and than 
calculating the other results in a second loop. My question is, 
whether you want, that the functions are changed in that way. If yes, 
I would be glad, to do that job.


For COVAR it looks like this (based on OOF680_m18):


Yes, this looks very good and should be changed that way. Which other 
functions do you plan to modify?




I'll work on CORREL, PEARSON, RSQ, STEYX, SLOPE, INTERCEPT and FORECAST 
(all in interpr3.cxx), which I think all suffer from the same 
square-problem. The function GetStVarParams in interpr1.cxx is OK in 
this respect and therefore also the DEVSQ, STDEV and VAR.


kind regards
Regina

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Re: [sc-dev] stable algorithm for statistic functions issue 78250

2007-07-05 Thread Eike Rathke
Hi Regina,

On Thursday, 2007-07-05 13:06:15 +0200, Regina Henschel wrote:

 recent SRC680 milestone (latest available now is m219)
 
 m219 is not on the mirrors and I have used CVS not yet. The m218 
 tarballs are available on the mirros. I would then have to do another 18 
 hours build. I own only a normal PC with WinXP. Nevertheless, that 
 would be practicable for me. Would it be OK with the m218 version?

Sure, m218 is fine. Thank you.

  Eike

-- 
 OOo/SO Calc core developer. Number formatter stricken i18n transpositionizer.
 OpenOffice.org Engineering at Sun: http://blogs.sun.com/GullFOSS
 Please don't send personal mail to this [EMAIL PROTECTED] account, which I use 
for
 mailing lists only and don't read from outside Sun. Use [EMAIL PROTECTED] 
Thanks.

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Re: [sc-dev] stable algorithm for statistic functions issue 78250

2007-07-05 Thread Leonard Mada


Regina Henschel wrote:

...

I'll work on CORREL, PEARSON, RSQ, STEYX, SLOPE, INTERCEPT and 
FORECAST (all in interpr3.cxx), which I think all suffer from the same 
square-problem. The function GetStVarParams in interpr1.cxx is OK in 
this respect and therefore also the DEVSQ, STDEV and VAR.


kind regards
Regina


Great!

Let me know if there are any questions regarding the algorithms or the 
statistics. I was pretty busy lately (and still am :-( ), but  I would 
try to free some time to solve the problem if there is one.


Many thanks,

Leonard

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