Create new GLatLngBounds()
For each polyline:
  getBounds().getSouthWest()
  add it to the new GLatLngBounds() with the .extend method
  getBounds().getNorthEast()
  add it to the new GLatLngBounds() with the .extend method
Set the zoom using the new GLatLngBounds().

--
Marcelo - http://maps.forum.nu
--


On Apr 20, 5:03 pm, Kontaktschmied <[email protected]>
wrote:
> In this applicationhttp://tools.webmasterei.com/kmlkalender/you can
> see polylines of my tours by clicking in calendar.
>
> I wish to autozoom the map. With single polyline I can get the bounds
> width the command getBounds().  How I can get the bounds if I have
> multiple polylines  in my overlay?
>
> The polylines are generated with encoding via Ajax/PHP-class.
>
> Rainer
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