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How to find an instance selection box size

jodwyer
I am trying to get the top and bottom coordinates of an instance selection box.  I don't see any property on the instance that gives me access to it.  Any ideas?

Thanks.

P.s. I have the following piece of code which works but the bBox seems to return an area larger than I want.  The selection box on some of my instances are deliberately smaller than the symbol itself and I would like to get the coordinates from it.

foreach(instance sch~>instances
    
    fprintf(OUTFILE "%L,", caar(instance~>bBox)) ; x1
    fprintf(OUTFILE "%L,", caadr(instance~>bBox)) ; x2
    fprintf(OUTFILE "%L,", cadar(instance~>bBox)) ; y1
    fprintf(OUTFILE "%L\n", cadadr(instance~>bBox)) ; y2
)

 
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