Thanks guys,  all great info.   Tom

On May 19, 6:52 am, Bill Chadwick <[email protected]>
wrote:
> The best way I found of doing this is to use a semitransparent wide
> GPloyline, with a solid thin polyline down the middle.
>
> If you want a 2km wide line say you need to capture changes of map
> zoom with an event handler, recalculate the pixel width for 2km and
> then remove and replace the wide line.
>
> Very old demo herehttp://www.bdcc.co.uk/routeDemo.htmstill seems to
> work.
>
> Hope that helps.

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