Thanks for the advice Bob,

I am considering collapsing the overlays into a single one. I did so
with another overlay which shows the intended route. But displaying
even this slows down response more than I would have expected for a
single overlay layer.

I will take your advice however and keep track of where I've been in
my main program, and bundle a String of historical  lat/long
coordinates with the call to the overlay.This list will get awfully
long rather quickly. I'll remove the old overlay each time, parse the
String, and redraw them all.

Ian in NS


On Feb 8, 9:54 pm, Bob Kerns <[email protected]> wrote:
> Sounds likely -- though actually profiling your performance would be a
> good idea.
>
> Why not collapse them into a single overlay?
>
> On Feb 8, 8:17 am, ian <[email protected]> wrote:
>
> > As I add successiveoverlaysto track my progress over a map. the
> > performance slows. Anybody know if this likely due to the burden of
> > pushing all thoseoverlaysaround?

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