Count instances in selection???

[artofseeing]

hi all,
i have a script where i am at one point helpless with a problem:

its a script giving me a summary of weights.
i have components with dynamic attributes "gewicht" (weight).
i select a couple, then i get a dialog box with the following:

number of selected items.
total weight.

then:

number of item a - name of item a - single weight item a
number of itemb - name of item b - single weight item b
and so on...

depending on how many things are in my selection.

one part doesnt work though, that which i put in bold above.
it doesnt show me the number of instances in my selection, as iwant, but
it rather shows me the number of instances in my model.
and i cant see the code for it.any body got some advice? thx alot
the problem is, where it says: "e.definition.count_instances"
so basically i want: "e.definitions.count_instances" for my selection.
here's the part of the code:

   
 name=[]
   ss.each{|e|
  
  
      if e.class==Sketchup;;ComponentInstance
        

       name=name+[e.definition.count_instances.to_s+ "x \t"+e.definition.name+ " \ta "+e.definition.get_attribute("dynamic_attributes","gewicht",0)+" kg"+"\n"]
   
        end
       
          
    }


 
   

[cjthompson]

My initial thought would be:

numSelectedInstances = (e.definition.instances & ss.to_a).length # & intersects two arrays

You'll probably want to stick around and see what the others say.

[TIG]

You want to count the instances in a selection...

counts=[]
ss.each{|e|counts<< e.definition if e.class==Sketchup;;ComponentInstance}
countsuniq=counts.uniq
compocount=[]
countsuniq.each{|e|
  count=0
  counts.each{|c|count+=1 if c==e}
  compocount<< [e.name, count]
}
### compocount is an array, with each item as an array of the instance's definition.name [you could change it to just the definition itself 'e' ?] and then its number of instances as counted in the selection (ss)...