Dear Bernand,

In MAIN embedded map algebra can probably vover all what you need. If you want 
to go along this path, please, let me know and I will help you.

best,
dusan


> On 30 May 2020, at 01:00, CCP4BB automatic digest system 
> <lists...@jiscmail.ac.uk> wrote:
> 
> 
> Date:    Fri, 29 May 2020 00:02:11 -0700
> From:    Pavel Afonine <pafon...@gmail.com>
> Subject: Re: visual mask editor - why
> 
> Hi Bernhard,
> 
> "Like comparing these map regions, excluding
> 
> intrusion of a solvent mask, etc.":
> 
> You didn't say much about the context.. So I'd say Polder map approach
> comes to mind first based on these keywords. Next is "map comparison" (
> https://doi.org/10.1107/S1399004714016289).
> 
> If none of the above: what we (or you) are missing?
> 
> Pavel
> 
> On Thu, May 28, 2020 at 11:17 AM Bernhard Rupp <hofkristall...@gmail.com>
> wrote:
> 
>> Maybe I should explain an example: Say coot detects an unmodelled blob
>> (maybe a ligand). Now, I would like to do
>> 
>> a number of things without biasing towards a model. Like comparing these
>> map regions, excluding
>> 
>> intrusion of a solvent mask, etc.
>> 
>> 
>> 
>> Now could coot for example just generate a mask around what it already
>> knows are blobs?
>> 
>> Possible useful items could be a solvent mask not including that regions,
>> or a density map
>> 
>> that includes only features with a certain boundary around that blob.
>> 
>> 
>> 
>> I pilfered some kludges together from different sources, but let’s just
>> say inelegant would be a compliment.
>> 
>> 
>> 
>> Best, BR
>> 
>> ------------------------
>> 
>> Brief question: Does something like a visual density mask editor exist?
>> 
>> Thx, BR
>> 
>> ------------------------------------------------------
>> 
>> Bernhard Rupp
>> 
>> http://www.hofkristallamt.org/
>> 
>> b...@hofkristallamt.org
>> 
>> +1 925 209 7429
>> 
>> +43 676 571 0536
>> 
>> ------------------------------------------------------
>> 
>> Many plausible ideas vanish
>> 
>> at the presence of thought
>> 
>> ------------------------------------------------------
>> 
>> 
>> 
>> ------------------------------
>> 
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>> https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=CCP4BB&A=1
>> 
> 
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> ------------------------------
> 
> Date:    Fri, 29 May 2020 09:34:23 +0100
> From:    Harry Powell - CCP4BB <hrp-ccp...@virginmedia.com>
> Subject: Re: Strange Pseudosymmetry Effects
> 
> Hi Tim
> 
> You could send out an SOS to some of the other authors in the same issue, who 
> might have kept a copy - several are “regular" posters on this forum, e.g.  
> 
>       Sacha Urzhumtsev
>       Gerard Kleywegt
>       Eleanor Dodson
> 
> There’s a good chance they’ll be stuck at home at the moment with plenty of 
> time to search through old boxes…
> 
> Harry
> 
>> On 28 May 2020, at 21:04, Tim Gruene <tim.gru...@univie.ac.at> wrote:
>> Dear Eddie, dear all
>> 
>> According to ftp://ftp.ccp4.ac.uk/ccp4/newsletter/jun_95/, this article
>> appeare in Newsletter June 95. It is mentioned in the table of contents,
>> "Correction on perfection: primary extinction correction in protein
>> crystallography" by Polykarpov and Sawyer.
>> Unfortunately, the article itself is not there
>> 
>> Extinction is not the same as the dynamic effects that James mentioned,
>> but this seems the closest match.
>> 
>> Would anyone have a copy they can share with me?
>> 
>> Thanks a lot!
>> 
>> Best,
>> 
>> Tim 
> 
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> ------------------------------
> 
> Date:    Fri, 29 May 2020 10:49:03 +0100
> From:    Eleanor Dodson <eleanor.dod...@york.ac.uk>
> Subject: Re: visual mask editor - why
> 
> Wont mapmask do that?  Find the fraction coordinate of the blob extent then
> carve that section out of the map?
> Eleanor
> From documentation:
> 
> *XYZLIM [ASU] [CELL] [MATCH] <x1> <x2> <y1> <y2> <z1> <z2>**Set the output
> map extent as `extend'. <x1>-<z2> are given in grid units or in fractional
> coordinates. It is possible to automatically extend to the CCP4 default
> asymmetric unit, or a whole unit cell, by specifying `XYZLIM ASU' or
> `XYZLIM CELL'. It is also possible to extend the map to match another map
> (given as MAPLIM) by specifiying `XYZLIM MATCH'. The default is to keep the
> extent of the input map.*
> 
> On Fri, 29 May 2020 at 08:03, Pavel Afonine <pafon...@gmail.com> wrote:
> 
>> Hi Bernhard,
>> 
>> "Like comparing these map regions, excluding
>> 
>> intrusion of a solvent mask, etc.":
>> 
>> You didn't say much about the context.. So I'd say Polder map approach
>> comes to mind first based on these keywords. Next is "map comparison" (
>> https://doi.org/10.1107/S1399004714016289).
>> 
>> If none of the above: what we (or you) are missing?
>> 
>> Pavel
>> 
>> On Thu, May 28, 2020 at 11:17 AM Bernhard Rupp <hofkristall...@gmail.com>
>> wrote:
>> 
>>> Maybe I should explain an example: Say coot detects an unmodelled blob
>>> (maybe a ligand). Now, I would like to do
>>> 
>>> a number of things without biasing towards a model. Like comparing these
>>> map regions, excluding
>>> 
>>> intrusion of a solvent mask, etc.
>>> 
>>> 
>>> 
>>> Now could coot for example just generate a mask around what it already
>>> knows are blobs?
>>> 
>>> Possible useful items could be a solvent mask not including that regions,
>>> or a density map
>>> 
>>> that includes only features with a certain boundary around that blob.
>>> 
>>> 
>>> 
>>> I pilfered some kludges together from different sources, but let’s just
>>> say inelegant would be a compliment.
>>> 
>>> 
>>> 
>>> Best, BR
>>> 
>>> ------------------------
>>> 
>>> Brief question: Does something like a visual density mask editor exist?
>>> 
>>> Thx, BR
>>> 
>>> ------------------------------------------------------
>>> 
>>> Bernhard Rupp
>>> 
>>> http://www.hofkristallamt.org/
>>> 
>>> b...@hofkristallamt.org
>>> 
>>> +1 925 209 7429
>>> 
>>> +43 676 571 0536
>>> 
>>> ------------------------------------------------------
>>> 
>>> Many plausible ideas vanish
>>> 
>>> at the presence of thought
>>> 
>>> ------------------------------------------------------
>>> 
>>> 
>>> 
>>> ------------------------------
>>> 
>>> To unsubscribe from the CCP4BB list, click the following link:
>>> https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=CCP4BB&A=1
>>> 
>> 
>> ------------------------------
>> 
>> To unsubscribe from the CCP4BB list, click the following link:
>> https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=CCP4BB&A=1



Dr. Dusan Turk, Prof.
Head of Structural Biology Group http://stef.ijs.si/ 
Head of Centre for Protein  and Structure Production
Centre of excellence for Integrated Approaches in Chemistry and Biology of 
Proteins, Scientific Director
http://www.cipkebip.org/
e-mail: dusan.t...@ijs.si    
phone: +386 1 477 3857       Dept. of Biochem.& Mol.& Struct. Biology
fax:      +386 1 477 3984       Jozef Stefan Institute
                            Jamova 39, 1 000 Ljubljana,Slovenia
Skype: dusan.turk (voice over internet: www.skype.com

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