Ah I see--I will try and let you know how it works. Thanks again!
________________________________
From: Andreas Warnecke [4ndreas.warne...@gmail.com]
Sent: Tuesday, June 17, 2014 2:18 PM
To: Lapolla, Suzanne M (HSC)
Cc: Robert Campbell; pymol-users@lists.sourceforge.net
Subject: Re: [PyMOL] command question RE printing out distances to text file

One more addition to the reply:

I failed to notice that you are trying to input a range of residues '17-19'

Make sure to input single atom selections to get correct distances and not an 
average:
A straightforward way to get that name is to click on the atom while in the 
'editing mode' of pymol: pymol will print: "you clicked" followed by a name 
that can be copy-pasted.
e.g.  "You clicked /lys///LYS`2/CA -> (pk1)" can be used to copy-paste 
/lys///LYS`2/CA

Another alternative is to use selections to identify one atom:
e.g.
cmd.distance('chain B and resi 297 and name CB','chain A and resi 17 and name 
CB')

Then your example becomes:

from pymol import cmd

# open dist.txt for writing
f=open('distnew.txt','w')

# calculate the distance and store it in dst
dst1=cmd.distance('chain B and resi 297 and name CB','chain A and resi 17 and 
name CB')
dst2=cmd.distance('chain B and resi 297 and name CB','chain A and resi 18 and 
name CB')
dst3=cmd.distance('chain B and resi 297 and name CB','chain A and resi 19 and 
name CB')

# and then for writing the output file
f.write("%8.3f\n"%dst1)
f.write("%8.3f\n"%dst2)
f.write("%8.3f\n"%dst3)

f.close()

Cheers,

Andreas


On Tue, Jun 17, 2014 at 8:45 PM, Andreas Warnecke 
<4ndreas.warne...@gmail.com<mailto:4ndreas.warne...@gmail.com>> wrote:
Hej Suzanne,

you will need to append the other two distances to the script to get them 
printed.
Following your example that would be something like:

# calculate the distance and store it in dst
dst1=cmd.distance('tmp','B///297/cb','A///17-19/cb')
dst2=cmd.distance('tmp','B///297/cb','A///17-19/cb') # change the selections in 
this line!
dst3=cmd.distance('tmp','B///297/cb','A///17-19/cb') # change the selections in 
this line!

# and then for writing the output file
f.write("%8.3f\n"%dst1)
f.write("%8.3f\n"%dst2)
f.write("%8.3f\n"%dst3)

inserting these blocks in your script hopefully will do the trick.

Cheers,

Andreas


On Tue, Jun 17, 2014 at 8:21 PM, Lapolla, Suzanne M (HSC) 
<suzanne-lapo...@ouhsc.edu<mailto:suzanne-lapo...@ouhsc.edu>> wrote:
Another follow up question to this. I decided to use the measure distance 
python script on the pymol wiki to do this, and I was able to do it 
successfully with a range of residues, but my question is about the output txt 
file.  When I run the script I get the correct distances (all 3 of them) to 
show on the GUI but the text file that is generated (distnew.txt) only lists 
one distance--so perhaps the script needs to be modified for this as well for 
the residues measured?

The original script is at the link 
http://www.pymolwiki.org/index.php/Measure_Distance<https://urldefense.proofpoint.com/v1/url?u=http://www.pymolwiki.org/index.php/Measure_Distance&k=7DHVT22D9IhC0F3WohFMBA%3D%3D%0A&r=1ciN0EuZ9XNq3lPnYtgkI5sKPXgKVaywidBN0C981SQ%3D%0A&m=EqubiL9cuYdYV13TK4bGte5vmf3Plq1xmWomVmdYlKU%3D%0A&s=992466ee53608d828281d0abbd95dc2742e6c75173eb93ae511f357e3225548b>
and my modified version is below. Suggestions appreciated! Thank you.

# This script writes the distance from
# atom mol1///25/ha to atom mol1///26/ha
# out to the file "dist.txt"
# Simply change your selections to see different distances.

# import PyMOL's command namespace
from pymol import cmd

# open dist.txt for writing
f=open('distnew.txt','w')

# calculate the distance and store it in dst
dst=cmd.distance('tmp','B///297/cb','A///17-19/cb')

# write the formatted value of the distance (dst)
# to the output file
f.write("%8.3f\n"%dst)

# close the output file.
f.close()
________________________________________
From: Robert Campbell 
[robert.campb...@queensu.ca<mailto:robert.campb...@queensu.ca>]
Sent: Monday, June 09, 2014 10:04 AM
To: pymol-users@lists.sourceforge.net<mailto:pymol-users@lists.sourceforge.net>
Subject: Re: [PyMOL] command question RE printing out distances to text file

Hi Suzanne,

You can also get the distance printed in the external GUI or terminal window
by using the "cmd.distance" version of the command.  So either you can
assign the distance to a variable and print it or you can print the result
directly.

Assuming you have two selections, sele1 and sele2 specifying the atoms of
interest you can do:

  d = cmd.distance(sele1,sele2)
  print sele1,sele2,d


Cheers,
Rob

On Mon, 2014-06-09
13:13 EDT, Thomas Holder 
<thomas.hol...@schrodinger.com<mailto:thomas.hol...@schrodinger.com>> wrote:

> Hi Suzanne,
>
> you can use the get_distance command. It doesn't generate a distance
> object but prints the distance to the external window.
>
> https://urldefense.proofpoint.com/v1/url?u=http://pymolwiki.org/index.php/Get_Distance&k=7DHVT22D9IhC0F3WohFMBA%3D%3D%0A&r=1ciN0EuZ9XNq3lPnYtgkI5sKPXgKVaywidBN0C981SQ%3D%0A&m=fr2bAoLQoVgp9h2t2fgBvfGVVX7oQ1g14g1AODFz%2FRg%3D%0A&s=921f4dfed39cd38f4ae7a70dfb937844d4e3faf1bc967c2f4d1f2944fa2ea31b
>
> Cheers,
>   Thomas
>
> On 06 Jun 2014, at 23:03, Lapolla, Suzanne M (HSC)
> <suzanne-lapo...@ouhsc.edu<mailto:suzanne-lapo...@ouhsc.edu>> wrote:
>
> > Fellow Pymol Users:
> > I may have asked this question before...but if so have forgotten. I am
> > measuring distances between 2 atoms in 2 different objects using the
> > distance command, and it is working perfectly, but I wonder if there is
> > a command I can use/add so that those distances can be printed in the
> > external gui as well as being shown in the viewer. I will be doing lots
> > of these at the same time and the screen will get crowded. Thank you in
> > advance.
>




--
Robert L. Campbell, Ph.D.
Senior Research Associate/Adjunct Assistant Professor
Dept. of Biomedical & Molecular Sciences
Botterell Hall Rm 644
Queen's University,
Kingston, ON K7L 3N6  Canada
Tel: 613-533-6821<tel:613-533-6821>
<robert.campb...@queensu.ca<mailto:robert.campb...@queensu.ca>>    
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