On Mon, 2009-02-16 at 20:05 -0800, Cory Helfrich wrote:
> Hello Joost and Benoit,
> 
> IIRC, Scid displays the range and mean of the years and Elos in this dialog.
> Unknown dates and Elos are not included in the range calculation, but are
> included (as zero) in the mean calculations.

Aha! This zero inclusion - although 'uncomfortable', I think they should
be skipped from the calculation - _could_ explain the numbers that I
see.

But after sorting my dbase YMD, I do not see any "unknown date" in the
game list...

Just wondering, how is this average year calculated? Multiplying e.g. 3M
games by let's say the year 2000 may well result in overflow. The result
does not fit in 32-bits integer. Might this be the case in the scid
code?
The average calculation may work in this case if prior to
addition/multiplication all years are taken as an offset to the minimum
year in the set and in the end we add this minimum year back to the
result.

> 
> Best regards,
> Cory
>  Cory Helfrich
> [email protected] 
> 
> 



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