Hi Osvaldo,

I could have been more clear I guess. First of all, let's say I have
obtained the atom list of a selection:

X = cmd.get_model(selection1).atom

I'm doing stuff with that (PCA, to be exact), but now I want to display the
result only for a subselection. Probably getting the intersection of the
selections and then check which atoms there match with the original
selection is an approach. The question there is what the best way is for
checking identity of the atoms.

The second issue is when there is no intersection of the selections, but
there may be correspondence, as in alignment.

Thanks for thinking along,

Tsjerk

On Tue, Oct 27, 2015 at 10:44 AM, Osvaldo Martin <aloctavo...@gmail.com>
wrote:

> Hi Tsjerk,
>
> Do you mean something like this?
>
> cmd.index("sel_1 and sel_2")
>
> I do not get the differences between your two cases. Whats the difference
> between “atoms which are both in selection 1 and 2” and “matching atoms in
> the two selections”
>
> Cheers,
>
> Osvaldo.
>
> On Mon, Oct 26, 2015 at 10:33 AM, Tsjerk Wassenaar <tsje...@gmail.com>
> wrote:
>
>
>> Hi Thomas e.a.,
>>
>> Given two selections, would there be an easy way to
>>
>> 1. find the atoms which are both in selection 1 and 2, and the indices of
>> those in the selections
>>
>> and
>>
>> 2. find the matching atoms in the two selections, like align does, and
>> the indices of those in the selections
>>
>> Thanks,
>>
>> Tsjerk
>>
>> --
>> Tsjerk A. Wassenaar, Ph.D.
>>
>>
>>
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>>
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> ​
>



-- 
Tsjerk A. Wassenaar, Ph.D.
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