Re: [PyMOL] Ca sphere size from b-factor value

2012-08-02 Thread Thomas Holder
Hi Doug,

scaling to the range of observed values:

stored.b = []
iterate n. CA, stored.b.append(b)
stored.min = min(stored.b)
stored.range = max(stored.b) - stored.min
alter n. CA, vdw = (b - stored.min) / stored.range * 4 + 1
rebuild

However, since the b-factor scales to the mean square displacement of 
the atom, you might also want to alter vdw radius like this:

alter n. CA, vdw = (b / (8 * 3.14**2))**0.5 * 3
rebuild

Cheers,
   Thomas

Douglas Kojetin wrote, On 08/01/12 22:47:
 Hi Jason,
 
 Thanks -- is there any way to add some limits to the scaling, say to alter 
 the vdw radius from a value of 1 to 5 based on a b-factor range of values?
 
 Doug
 
 
 
 On Jul 31, 2012, at 4:44 PM, Jason Vertrees wrote:
 
 Hi Douglas,

 You can do something as simple as this:

 # fetch a protein

 fetch 1ejg, async=0

 # show as spheres

 as spheres, n. CA

 # set the vdw radii = some factor of the b-factor

 alter n. CA, vdw=b/5

 rebuild

 Cheers,

 -- Jason

 On Tue, Jul 31, 2012 at 3:36 PM, Douglas Kojetin
 douglas.koje...@gmail.com wrote:
 Hi All,

 I would like to set the sphere size for each Ca atom proportional to the 
 b-factor value (the larger the b-factor the larger the sphere size) and 
 also color the sphere based on the b-factor value.  Is there an easy way to 
 adjust the sphere size according to b-factor value?

 Thanks,
 Doug

 -- 
 Jason Vertrees, PhD
 PyMOL Product Manager
 Schrödinger, LLC

 (e) jason.vertr...@schrodinger.com
 (o) +1 (603) 374-7120

-- 
Thomas Holder
MPI for Developmental Biology
Spemannstr. 35
D-72076 Tübingen

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Re: [PyMOL] Ca sphere size from b-factor value

2012-08-01 Thread Douglas Kojetin
Hi Jason,

Thanks -- is there any way to add some limits to the scaling, say to alter the 
vdw radius from a value of 1 to 5 based on a b-factor range of values?

Doug



On Jul 31, 2012, at 4:44 PM, Jason Vertrees wrote:

 Hi Douglas,
 
 You can do something as simple as this:
 
 # fetch a protein
 
 fetch 1ejg, async=0
 
 # show as spheres
 
 as spheres, n. CA
 
 # set the vdw radii = some factor of the b-factor
 
 alter n. CA, vdw=b/5
 
 rebuild
 
 Cheers,
 
 -- Jason
 
 On Tue, Jul 31, 2012 at 3:36 PM, Douglas Kojetin
 douglas.koje...@gmail.com wrote:
 Hi All,
 
 I would like to set the sphere size for each Ca atom proportional to the 
 b-factor value (the larger the b-factor the larger the sphere size) and also 
 color the sphere based on the b-factor value.  Is there an easy way to 
 adjust the sphere size according to b-factor value?
 
 Thanks,
 Doug
 
 
 --
 Live Security Virtual Conference
 Exclusive live event will cover all the ways today's security and
 threat landscape has changed and how IT managers can respond. Discussions
 will include endpoint security, mobile security and the latest in malware
 threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
 ___
 PyMOL-users mailing list (PyMOL-users@lists.sourceforge.net)
 Info Page: https://lists.sourceforge.net/lists/listinfo/pymol-users
 Archives: http://www.mail-archive.com/pymol-users@lists.sourceforge.net
 
 
 
 -- 
 Jason Vertrees, PhD
 PyMOL Product Manager
 Schrödinger, LLC
 
 (e) jason.vertr...@schrodinger.com
 (o) +1 (603) 374-7120


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[PyMOL] Ca sphere size from b-factor value

2012-07-31 Thread Douglas Kojetin
Hi All,

I would like to set the sphere size for each Ca atom proportional to the 
b-factor value (the larger the b-factor the larger the sphere size) and also 
color the sphere based on the b-factor value.  Is there an easy way to adjust 
the sphere size according to b-factor value?

Thanks,
Doug


--
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Exclusive live event will cover all the ways today's security and 
threat landscape has changed and how IT managers can respond. Discussions 
will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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Re: [PyMOL] Ca sphere size from b-factor value

2012-07-31 Thread Jason Vertrees
Hi Douglas,

You can do something as simple as this:

# fetch a protein

fetch 1ejg, async=0

# show as spheres

as spheres, n. CA

# set the vdw radii = some factor of the b-factor

alter n. CA, vdw=b/5

rebuild

Cheers,

-- Jason

On Tue, Jul 31, 2012 at 3:36 PM, Douglas Kojetin
douglas.koje...@gmail.com wrote:
 Hi All,

 I would like to set the sphere size for each Ca atom proportional to the 
 b-factor value (the larger the b-factor the larger the sphere size) and also 
 color the sphere based on the b-factor value.  Is there an easy way to adjust 
 the sphere size according to b-factor value?

 Thanks,
 Doug


 --
 Live Security Virtual Conference
 Exclusive live event will cover all the ways today's security and
 threat landscape has changed and how IT managers can respond. Discussions
 will include endpoint security, mobile security and the latest in malware
 threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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-- 
Jason Vertrees, PhD
PyMOL Product Manager
Schrödinger, LLC

(e) jason.vertr...@schrodinger.com
(o) +1 (603) 374-7120

--
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and 
threat landscape has changed and how IT managers can respond. Discussions 
will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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