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Xds maxcc12: Difference between revisions
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To analyze XDS_ASCII.HKL in terms of the detailed course of CC<sub>1/2</sub> by frame number and resolution, you could use the program [ftp://turn5.biologie.uni-konstanz.de/pub/xds_maxcc12.linux64 XDS_MAXCC12] . | To analyze XDS_ASCII.HKL in terms of the detailed course of CC<sub>1/2</sub> by frame number and resolution, you could use the program [ftp://turn5.biologie.uni-konstanz.de/pub/xds_maxcc12.linux64 XDS_MAXCC12] , to be stored as xds_maxcc12 in your ~/bin or (as root) in /usr/local/bin (don't forget to chmod a+x xds_maxcc12 !). | ||
You also need a script such as | You also need a script such as | ||
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[[File:xds_maxcc12.png]] | [[File:xds_maxcc12.png]] | ||
The plot is useful because it shows you the cumulative influence of the | The plot is useful because it shows you the cumulative influence of all frames of the dataset on CC<sub>1/2</sub> and completeness of ten resolution shells (to change that number, you must modify the script). The highest resolution shell us usually the lowest curve (red); the curves above are lower resolution shells. (To get the legend which maps the colors and linetypes to resolution range numbers, remove the "set nokey" line in the script) | ||
This may shed light on the usefulness of certain frame ranges of your dataset which have high R<sub>meas</sub>. Do they really compromise CC<sub>1/2</sub> of the merged data - which is all you should care about? | |||
The example plot shows that CC<sub>1/2</sub> is highest around frame 60 to 70 and then gets lower due to radiation damage. However it also makes clear that around frame 60, the completeness is only about 50%. In this case, the anomalous signal is practically just noise. | The example plot shows that CC<sub>1/2</sub> is highest around frame 60 to 70 and then gets lower due to radiation damage. However it also makes clear that around frame 60, the completeness is only about 50%. In this case, the anomalous signal is practically just noise. | ||