hi all
i'm confused about truncate's Wilson plot output.
i'm running truncate version 6.1: 28/03/08
in particular:
a) the wilson plot displayed in the output file has as the horizontal
axis LABEL: 4 sinsq/lamdasq (i.e. 4 s^2) (times 100, forget about
that for the moment)
b) the TICK MARKS on the horizontal axis appear to be just s^2
(again, times 100, forget that), but no factor of 4.
c) the reported LSQ Line Gradient (wilson B-factor) would seem to have
been calculated from
ln K ~ -B s^2
but i thought the B factor is defined as in:
ln K ~ -2 B s^2
that is, it would seem that truncate is reporting a B factor that is
twice what it should be, and the axis label is also inconsistent,
having an extra factor of 4 (this appears throughout the truncate
documentation though, so i wonder if i'm not missing something.
thanks!
|