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FAQ: Difference between revisions
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These are answers to questions that were asked concerning XDS, on the occasion of the webinar on Feb 25, 2010. Some answers were given during the webinar; these are not repeated here. | These are answers to questions that were asked concerning XDS, on the occasion of the webinar on Feb 25, 2010. Some answers were given during the webinar; these are not repeated here. | ||
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Q: Can one apply the corrections in CORRECT without deleting outliers (i.e. waiting for a later program e.g. SCALA to do outlier rejection). | Q: Can one apply the corrections in CORRECT without deleting outliers (i.e. waiting for a later program e.g. SCALA to do outlier rejection). | ||
A: you | A: you could set WFAC1 to 100 (default is 1) | ||
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Q: How accurate need to be the ORGX, ORGY? Can XDS optimize the beam position? | Q: How accurate need to be the ORGX, ORGY? Can XDS optimize the beam position? | ||
A: the error should be less than half the minimum spot separation. XDS does optimize the beam position. | A: ideally, the error should be less than half the minimum spot separation. XDS does optimize the beam position. | ||
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Q: How do you interpret the DECAY.cbf file? | Q: How do you interpret the DECAY.cbf file? | ||
A: Using XDS-Viewer: along the x direction, you find the "integration batches" (last frames | A: Using XDS-Viewer: along the x direction, you find the "integration batches" (first frames to the left; last frames to the right). Along the y direction, you find the resolution ranges (bottom: low res; top: high res). The shades of gray correspond to numbers. Move the mouse across them to find the numbers which are simply the scalefactors multiplied with 1000. | ||
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Q: What about overlapping reflections in XDS? | Q: What about overlapping reflections in XDS? | ||
A: If I understand your question correctly: reflections that occur on the same position of the detector, and on the same frame, are not deconvoluted by XDS (there are programs which may be able to do this but I have not used them so far, and cannot comment on them). Reflections that are either spatially (x,y) or rotationally (in phi) separated are not a problem, they are treated | A: If I understand your question correctly: reflections that occur on the same position of the detector, and on the same frame, are not deconvoluted by XDS (there are programs which may be able to do this but I have not used them so far, and cannot comment on them). Reflections that are either spatially (x,y) or rotationally (in phi) separated are not a problem, they are treated quite adequately by XDS (read about the pixel-labelling method!) | ||
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