[phenixbb] Phenix reflection statistics

James Fraser jaimefraser at gmail.com
Fri Aug 6 08:05:14 PDT 2010


What does the correlation coefficient that is reported at the end of
phenix.reflection_statistics represent? (I would assume the CC of F1
vs F2 for all reflections with an observation in datasets 1 and 2).

The documentation "...the output will also show the correlations
between the datasets and, if applicable, between the anomalous
differences, both as overall values and in bins." is a bit ambiguous.

Also in the below comparison, how would the overall correlation be
0.901 when all the bins have correlations between 0.330-0.858?

CC Obs 2 3  0.901  h,k,l
Correlation of:
  2: 1.mtz:F-obs,SIGF-obs
  3: 2.mtz:F-obs,SIGF-obs
Overall correlation:  0.901
unused:         - 16.7088 [   0/9   ]
bin  1: 16.7088 -  2.0456 [5236/5928]  0.858
bin  2:  2.0456 -  1.6241 [5610/5946]  0.744
bin  3:  1.6241 -  1.4189 [5539/5925]  0.641
bin  4:  1.4189 -  1.2892 [5357/5873]  0.516
bin  5:  1.2892 -  1.1969 [5405/5972]  0.497
bin  6:  1.1969 -  1.1263 [5241/5939]  0.464
bin  7:  1.1263 -  1.0699 [5067/5903]  0.408
bin  8:  1.0699 -  1.0234 [4960/5934]  0.416
bin  9:  1.0234 -  0.9840 [4808/5941]  0.376
bin 10:  0.9840 -  0.9500 [4700/5931]  0.348
unused:  0.9500 -         [3339/6874]  0.330


Thanks,

James


-- 
James Fraser
jaimefraser at gmail.com
Alber Lab
356 Stanley Hall, QB3
UC Berkeley
Berkeley, CA 94720
http://ucxray.berkeley.edu/~jfraser/



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