Re: [ccp4bb]: A simple question of resolution

[Jim Pflugrath <jwp@RigakuMSC.com>]

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On Thu, 25 Apr 2002, Phil Evans wrote:

> This is a very fierce cutoff. If you are going to cutoff on I/sigI
> _before_ averaging, how are you gaining by collecting high redundancy?

Yes, but it is realistic.  If I have 100 observations, each with I/sigI of
0.5, and average them, then the math says that I'll get an I/sigI of about
5.  The reality is that such a refln is virtually useless.  My maps and
models don't look any better if I include such data.

And you know high redundancy helps with the I, not just the sigmaI.