James,

> I am currently having a problem with the distance command when applied to
> merged objects.  The real case is actually when I remove a ligand from a
> binding site and merge in a new ligand.  But as a simple example, I think I
> can demonstrate with the following:

The problem is in the create command. We'll try to fix it soon.

Cheers,

-- Jason

On Wed, Dec 14, 2011 at 6:23 PM, James Davidson <j.david...@vernalis.com> wrote:
> Dear All,
>
> I am currently having a problem with the distance command when applied to
> merged objects.  The real case is actually when I remove a ligand from a
> binding site and merge in a new ligand.  But as a simple example, I think I
> can demonstrate with the following:
>
>>frag ala, ala1
>>frag ala, ala2
>>translate [4,0,0], ala2
>>label all, ID
>>distance d1, ala1 & ID 3, ala2 & ID 0
>
> This creates a distance object fine.  But if I now merge the two objects
> into a new object:
>
>>create new, ala1 | ala2
>>disable ala1 | ala2
>
> and manually create two single atom selections corresponding to the original
> ID 3 and ID 0 atoms (using atom select mode and renaming the selections to
> give 'sele1' and 'sele2'):
>
>>distance d2, sele1, sele2
>
> gives me a distance between ID 0 and 3 both on what used to be ala2, and not
> between the two selected atoms!
>
>
> Am I doing something wrong with 'create'?  I don't recall having a problem
> with this sort of operation until maybe ~ 6 months ago...  I am using rev
> 3971 under Windows.  Any help/advice greatly appreciated.
>
> Kind regards
>
> James
>
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-- 
Jason Vertrees, PhD
PyMOL Product Manager
Schrodinger, LLC

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

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