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> The problem with an anomalous signal-to-noise ratio of 1 is that you > can't tell if you got anything just by looking at the data. That is, if > you have no signal at all you still expect your DANOs to have an average > value that is equal to the average value of SIGDANO. However, the > signal does tend to be stronger for low-angle data. The "DelAnom > correlation between half-sets" analysis done by SCALA does appear to be > a good way of detecting pretty weak anomalous signals. I highly > recommend that you look at it. Why would the anomalous signal be stronger for low-angle data? f'' (as I understand it) is roughly constant with respect to scattering angle (resolution), while f0 falls off rapidly with increasing scattering angle. delta f' (for anomalous) should behave similiarly. Am I missing something here? Pete Pete Meyer Fu Lab BMCB grad student Cornell University
