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Betreff: Re: [ccp4bb] [ccp4bb] AW: [ccp4bb] uncertainites associated with
intensities from twinned crystals; Sorry for HTML.
Tassos,
I'm no expert either, and there are caveats for using this formula on
correlated magnitudes. But I would assume that the intensities of twin related
Dear all,
thank you for your reply. I would summarize my concerns and opinions,
so
far:
1) for QTLS (non-merohedral twinning - non intersecting lattices) I think one
should consider the variables as independent and random and it is possible to
recover the true intensities of a unique
Fulvio,
First, to your point 2): Iobs(h1) and Iobs(h2) as well as Itrue(h1)
and Itrue(h2) are /not/ correlated! The Iobses are /related/ to the
Itrues by alpha (and the twin law), but the Itrues are totally
uncorrelated to each other, and so are the Iobses, in my opinion (even
though those will
Tassos,
I'm no expert either, and there are caveats for using this formula on
correlated magnitudes. But I would assume that the intensities of twin
related reflections should be independent from each other (that's my
understanding of the sigmoid cumulative intensity distribution of
twins).
