_picked is a variable. I thought it was defined prior to the callback. 

Sent from my stupid iphone

On Jan 20, 2012, at 10:35 AM, Alexander Rose <alexander.r...@weirdbyte.de> 
wrote:

> Hi all,
> 
> when using Jmol I find myself using either 'set picking CENTER' or 'set 
> picking SELECT GROUP', so I would like to switch as fast and easy as possible 
> between the two modes via the mouse. My first idea was to use the 'bind' 
> command to bind centering to "ALT-LEFT" and selecting a group to "LEFT". 
> However there is no "_center" jmol-action for the bind command and the 
> "_select" jmol-action seems not to work when 'set picking CENTER' is active. 
> The bind command also allows to pass a jmol "script" instead of a 
> jmol-action, but inside that passed script the information which atom was 
> picked is not available so you can't center on it or select its group. There 
> is also the pick callback, but this does not give you the modifier key that 
> was pressed when the atom was picked.
> 
> In my opinion the addition of a "_centerOnPickedAtom" jmol-action for the 
> bind command would be useful. A more flexible solution would be to add a 
> "_PICKED" variable (containing a selection of the picked atom; maybe also 
> other pickable elements?!) to the things that gets replaced in a script 
> passed to 'bind' command. Based on that variable it is straightforward to 
> implement centering or selecting a group. What do you think? Would anyone 
> else find this useful, too?
> 
> 
> Best
> Alexander
> 
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