Diederichs Novel R available in CCP4?

[Phil Evans]

Kay Diederichs wrote:
>
.. snip
 
> sorry, no CCP4 data accepted currently).


I've put the calculation of R_meas & PCV into the most recent version of
Scala, available from ftp://ftp.mrc-lmb.cam.ac.uk/pub/scala_2.2.3.tar.gz

This will also be in the next CCP4 release 3.3, due in July (DV)

The calculation is slightly different from that in Diederichs & Karplus
program, as I compare observations to the weighted rather than the
unweighted mean. I also have not put in a calculation of "R_mergd" as
I'm not totally convinved about the division of observations into random
subsets for this statistic (maybe because I don't understand it
properly).

The <I/sd> has always been in the Scala output, and remains I believe
the most useful statistic for deciding how far the data really go.

	Phil