On Wed, 18 Mar 2009, Oded Ben-Tal wrote:
when using variance (from mapping library) - I get negative numbers.
Since variance is supposed to be always positive and I don't see
anything wrong in the way the abstraction is done, I presume there is
something I'm missing. My impression is that small changes in the input
translate to negative 'variance'
Is it really a negative number, or is it more like 9.74915e-05 ? In the
latter case, only the exponent is negative, which means
9.74915/10/10/10/10/10 = 0.0000974915, whereas with a plus sign like
1.2e+06 would mean 1.2*10*10*10*10*10*10 = 1200000.
_ _ __ ___ _____ ________ _____________ _____________________ ...
| Mathieu Bouchard - tél:+1.514.383.3801, Montréal, Québec
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