On Sep 23, 10:56 am, Leigh <[email protected]> wrote:
> Hi all,
>
> I know that everyone like to work with existing code rather than vague
> questions, so I'll start with the very simple version of this
> question.  Can anyone help me understand why this works (displays 2
> routes):
>
> http://www.routeloops.com/Working/dontUseIndex.html
>
> but this does not (displays no routes):
>
> http://www.routeloops.com/Working/useIndex.html

I get a javascript error, don't you?

I don't have a real debugger, but I suspect that it is complaining
that directionsDisplay[2] doesn't exist when the call back runs.

  -- Larry


>
> ?
>
> There is almost no difference between the two.  I am creating two
> DirectionsService and DirectionsRenderer objects, and trying to
> display them on this map.  (Yes, I stole this map from someone else --
> you all may have seen it before.)  In both cases I have a loop over j
> from 0 to 1 to create the route and display it.  In the case that
> works, I use 0 and 1 as the explicit indices.  In the case that does
> not work, I use j as the index.  I can't figure out why those two
> should be different, but it appears they are.  Can anyone explain to
> me why that is?
>
> (What follows is a longer description of what I'd like to eventually
> achieve, of which the above is only a part.  Don't read it if you
> don't care.)
> I have a web application called routeloops.com which automatically
> generates closed route maps.  (For biking, running, etc.)  Although it
> is not built on Google Maps, I would like to provide a Google Maps
> interface to it.  To do that, I will need to take a set of LatLng()
> and route between them (from 0 to 1, 1 to 2, 2 to 3, etc, all the way
> back to 0.)  I have been struggling with how to get Google Maps to do
> this properly, and still leave the route draggable (which is another
> thing I want.)  I am hoping that what I am doing above is a step in
> the right direction, but I'm stumped by why I can't simply loop over
> these functions and get them to work.
> So if, in addition to the above specific question, anyone has any
> thoughts/examples on how to accomplish my eventual goal (without using
> the waypoint functionality -- which I do know how to do, but which is
> too limited for me) then I would VERY MUCH appreciate that as well.
>
> Leigh

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