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655 bytes added, 12:23, 10 July 2019
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XDSCC12 is a program for generating [[CC1/2|delta-CC<sub>1/2</sub>]] and delta-CC<sub>1/2-ano</sub>ano values for XDS_ASCII.HKL (written by [[XDS]]), or for XSCALE.HKL containing several files of type XDS_ASCII.HKL after scaling in [[XSCALE]] (with MERGE=FALSE).
It implements the method described in Assmann, Brehm and Diederichs (2016) Identification of rogue datasets in serial crystallography. J. Appl. Cryst. 49, 1021 [], and it does this not only for the individual datasets in XSCALE.HKL, but also for individual frames, or groups of frames, of a single dataset collected with the rotation method and processed by [[XDS]].
The program output in the terminal window is terse but supposed to be self-explanatory; it can (and most often should) be saved or re-directed to a file. xdscc12 . The .. > xdscc12.log # or xdscc12 ... | tee xdscc12.logIf xdscc12 is used with XDS_ASCII.HKL, the isomorphous delta-CC<sub>1/2</sub> of a batch of frames (width chosen with the -t option) relative to all data is most easily visualized via [[XDSGUI]] (Statistics tab); the anomalous delta-CC<sub>1/2-ano</sub> may be plotted with e.g. gnuplot after grepping the relevant lines from the output.
For If xdscc12 is used with a XSCALE.HKL generated from multiple datasets, the output lines show the contribution of each dataset toward the total CC<sub>1/2</sub>. Negative numbers indicate a worsening of the overall signal. In this case, the program writes a file called XSCALE.INP.rename_me which shows statistics of delta-CC<sub>1/2</sub> and delta-CC<sub>1/2-ano</sub> values, and has a sorted list on INPUT_FILEs - the first one provides the best data set, and the last one is the worst one. This XSCALE.INP.rename_me can then be edited (i.e. deleting a few data sets with very negative delta-CC<sub>1/2</sub>), and renamed to XSCALE.INP.
Statistics are given (in resolution shells) for the isomorphous and the anomalous signal.

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