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Old 02-23-2009, 06:25 PM   #1
foolishbrat
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Location: South East Asia

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Default Two Version of Solexa Quality Score Formula

Hi all,


According to Solexa's Manual this

Code:
sQ = 10 log10(P/(1-P))
P= probability of base call

And according to Maq is this:

Code:
$sQ = -10 * log($e / (1 - $e)) / log(10);
e = probability of base error


Which one is the correct one?

Last edited by foolishbrat; 03-08-2009 at 05:27 PM.
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Old 02-24-2009, 01:59 AM   #2
-daf-
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Default

log10(x)=log(x)/log(10),
e = 1 - P,
log(x)=-log(1/x),
->Maq=Solexa
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