Now can we get rid of all the superfluous disks in our RAID? Or at least not replace them when they fail?
On 06/29/2020 06:24 PM, Andreas Förster wrote:
I like to think that the reflections I carefully measured at high multiplicity are not redundant, which the dictionary on my computer defines as "not or no longer needed or useful; superfluous" and the American Heritage Dictionary as "exceeding what is necessary or natural; superfluous" and "needlessly repetitive; verbose". Please don't use the term Needless repetitivity in your Table 1. It sends the wrong message. Multiplicity is good. All best. Andreas On Tue, Jun 30, 2020 at 12:03 AM James Holton <jmhol...@lbl.gov <mailto:jmhol...@lbl.gov>> wrote: I have found that the use of "redundancy" vs "multiplicity" correlates very well with the speaker's favorite processing software. The Denzo/HKL program scalepack outputs "redundancy", whereas scala/aimless and other more Europe-centric programs output "multiplicity". At least it is not as bad as "intensity", which is so ambiguous as to be almost useless as a word on its own. -James Holton MAD Scientist On 6/24/2020 10:27 AM, Bernhard Rupp wrote:> Oh, and some of us prefer the word 'multiplicity' ;-0____ Hmmm…maybe not. ‘Multiplicity’ in crystallography is context sensitive, and not uniquely defined. It can refer to ____ 1. the position multiplicity (number of equivalent sites per unit cell, aka Wyckoff-Multiplicity), the only (!) cif use of multiplicity____ 2. the multiplicity of the reflection, which means the superposition of reflections with the same /d/ (mostly powder diffraction) ____ 3. the multiplicity of observations, aka redundancy.____ While (a) and (b) are clearly defined, (c) is an arbitrary experimental number.____ How from (a) real space symmetry follows (b) in reciprocal space (including the epsilon zones, another ‘multiplicity’) is explained here ____ https://scripts.iucr.org/cgi-bin/paper?a14080 <https://urldefense.com/v3/__https://scripts.iucr.org/cgi-bin/paper?a14080__;!!GobTDDpD7A!Z-SrnEqSZwQOXWOwbMCkZ1GB3fvdFuQ5lzYUYwQdUVTCALc3j9O3xqX7-s72_nF7$> ____ and also on page 306 in BMC.____ Too much multiplicity might create duplicity… ____ Cheers, BR____ __ __ Jon Cooper____ __ __ On 23 Jun 2020 22:04, "Peat, Tom (Manufacturing, Parkville)" <tom.p...@csiro.au <mailto:tom.p...@csiro.au>> wrote:____ I would just like to point out that for those of us who have worked too many times with P1 or P21 that even 360 degrees will not give you 'super' anomalous differences. ____ I'm not a minimalist when it comes to data- redundancy is a good thing to have. ____ cheers, tom ____ __ __ Tom Peat Proteins Group Biomedical Program, CSIRO 343 Royal Parade Parkville, VIC, 3052 +613 9662 7304 +614 57 539 419 tom.p...@csiro.au <mailto:tom.p...@csiro.au> ____ __ __ ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
--
*From:*CCP4 bulletin board <CCP4BB@JISCMAIL.AC.UK <mailto:CCP4BB@JISCMAIL.AC.UK>> on behalf of 00000c2488af9525-dmarc-requ...@jiscmail.ac.uk <mailto:00000c2488af9525-dmarc-requ...@jiscmail.ac.uk> <00000c2488af9525-dmarc-requ...@jiscmail.ac.uk <mailto:00000c2488af9525-dmarc-requ...@jiscmail.ac.uk>> *Sent:* Wednesday, June 24, 2020 1:10 AM *To:* CCP4BB@JISCMAIL.AC.UK <mailto:CCP4BB@JISCMAIL.AC.UK> <CCP4BB@JISCMAIL.AC.UK <mailto:CCP4BB@JISCMAIL.AC.UK>> *Subject:* Re: [ccp4bb] number of frames to get a full dataset? ____ ____ Someone told me there is a cubic space group where you can get away with something like 11 degrees of data. It would be interesting if that's correct. These minimum ranges for data collection rely on the crystal being pre-oriented, which is unheard-of these days, although they can help if someone is nagging you to get off the beam line or if your diffraction fades quickly. Going for 180 degrees always makes sense for a well-behaved crystal, or 360 degrees if you want super anomalous differences. Hope this helps a bit. ____ Jon Cooper____ __ __ On 23 Jun 2020 07:29, Andreas Förster <andreas.foers...@dectris.com <mailto:andreas.foers...@dectris.com>> wrote:____ Hi Murpholino,____ __ __ in my opinion (*), the question is neither number of frames nor degrees. The only thing that matters to your crystal is dose. How many photons does your crystal take before it dies? Consequently, the question to ask is How best to use photons. Some people have done exactly that.____ https://doi.org/10.1107/S2059798319003528 <https://urldefense.com/v3/__https://doi.org/10.1107/S2059798319003528__;!!GobTDDpD7A!Z-SrnEqSZwQOXWOwbMCkZ1GB3fvdFuQ5lzYUYwQdUVTCALc3j9O3xqX7-hiQXkxe$>____ All best.____ __ __ __ __ Andreas____ __ __ __ __ (*) Disclaimer: I benefit when you use PILATUS or EIGER - but I want you to use them to your advantage.____ __ __ __ __ __ __ On Tue, Jun 23, 2020 at 12:04 AM Murpholino Peligro <murpholi...@gmail.com <mailto:murpholi...@gmail.com>> wrote:____ Hi. Quick question...____ I have seen *somewhere* that to get a 'full dataset we need to collect n frames':____ at least 180 frames if symmetry is X____ at least 90 frames if symmetry is Y____ at least 45 frames if symmetry is Z____ Can somebody point where is *somewhere*? ____ __ __ ...also...____ what other factors can change n... besides symmetry and radiation damage?____ __ __ Thanks____ __ __ --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
----------
To unsubscribe from the CCP4BB list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1 <https://urldefense.com/v3/__https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1__;!!GobTDDpD7A!Z-SrnEqSZwQOXWOwbMCkZ1GB3fvdFuQ5lzYUYwQdUVTCALc3j9O3xqX7-tcC1DQz$> ____ -- ____ Andreas Förster, Ph.D.____ Application Scientist Crystallography, Area Sales Manager Asia & Pacific____ Phone: +41 56 500 21 00| Direct: +41 56 500 21 76| Email: andreas.foers...@dectris.com <mailto:andreas.foers...@dectris.com>____ DECTRIS Ltd. | Taefernweg 1 | 5405 Baden-Daettwil | Switzerland | www.dectris.com <https://urldefense.com/v3/__https://www.dectris.com__;!!GobTDDpD7A!Z-SrnEqSZwQOXWOwbMCkZ1GB3fvdFuQ5lzYUYwQdUVTCALc3j9O3xqX7-gynYjCs$>____ __ __ __ __ ____ LinkedIn <https://urldefense.com/v3/__https://www.linkedin.com/company/5067919__;!!GobTDDpD7A!Z-SrnEqSZwQOXWOwbMCkZ1GB3fvdFuQ5lzYUYwQdUVTCALc3j9O3xqX7-kAHivj7$>____ facebook <https://urldefense.com/v3/__https://www.facebook.com/pages/Dectris-Ltd/623855944369304__;!!GobTDDpD7A!Z-SrnEqSZwQOXWOwbMCkZ1GB3fvdFuQ5lzYUYwQdUVTCALc3j9O3xqX7-rsWJB_s$><https://urldefense.com/v3/__https://twitter.com/DECTRIS_News__;!!GobTDDpD7A!Z-SrnEqSZwQOXWOwbMCkZ1GB3fvdFuQ5lzYUYwQdUVTCALc3j9O3xqX7-j3aXyCU$>____ __ __ /Confidentiality Note: This message is intended only for the use of the named recipient(s)/____ /and may contain confidential and/or privileged information. If you are not the intended/____ /recipient, please contact the sender and delete the message. Any unauthorized use of/____ /the information contained in this message is prohibited./____ __ __ __ __ __ __ ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
------
To unsubscribe from the CCP4BB list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1 <https://urldefense.com/v3/__https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1__;!!GobTDDpD7A!Z-SrnEqSZwQOXWOwbMCkZ1GB3fvdFuQ5lzYUYwQdUVTCALc3j9O3xqX7-tcC1DQz$> ____ __ __ __ __ ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
--
To unsubscribe from the CCP4BB list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1 <https://urldefense.com/v3/__https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1__;!!GobTDDpD7A!Z-SrnEqSZwQOXWOwbMCkZ1GB3fvdFuQ5lzYUYwQdUVTCALc3j9O3xqX7-tcC1DQz$> ____ __ __ __ __ ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ To unsubscribe from the CCP4BB list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1 <https://urldefense.com/v3/__https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1__;!!GobTDDpD7A!Z-SrnEqSZwQOXWOwbMCkZ1GB3fvdFuQ5lzYUYwQdUVTCALc3j9O3xqX7-tcC1DQz$> ____ ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ To unsubscribe from the CCP4BB list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1 <https://urldefense.com/v3/__https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1__;!!GobTDDpD7A!Z-SrnEqSZwQOXWOwbMCkZ1GB3fvdFuQ5lzYUYwQdUVTCALc3j9O3xqX7-tcC1DQz$>------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ To unsubscribe from the CCP4BB list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1 <https://urldefense.com/v3/__https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1__;!!GobTDDpD7A!Z-SrnEqSZwQOXWOwbMCkZ1GB3fvdFuQ5lzYUYwQdUVTCALc3j9O3xqX7-tcC1DQz$> ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ To unsubscribe from the CCP4BB list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1 <https://urldefense.com/v3/__https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1__;!!GobTDDpD7A!Z-SrnEqSZwQOXWOwbMCkZ1GB3fvdFuQ5lzYUYwQdUVTCALc3j9O3xqX7-tcC1DQz$>
######################################################################## To unsubscribe from the CCP4BB list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1 This message was issued to members of www.jiscmail.ac.uk/CCP4BB, a mailing list hosted by www.jiscmail.ac.uk, terms & conditions are available at https://www.jiscmail.ac.uk/policyandsecurity/
