sorry Lorenz , thanks Rossko for sharing ur idea...!!!
Rossko ,I have one doubt apart for this polyline . how use the
callback function when we have a array of lat,lng and I need there
address by using reserve geocode ,but the code runs faster inside
the for loop after sending the request and doesnt wait for the
response.
On Jul 11, 1:54 am, Lorenz <[email protected]> wrote:
> Thanks Ross.
>
> On Jul 10, 9:36 pm, Rossko <[email protected]> wrote:
>
> > On Jul 10, 1:13 pm, Lorenz <[email protected]> wrote:
>
> > > I'm sorry rossko..I'm not very good in this work..can you explain
> > > better how I can use the callback properly,...with an example for
> > > instance..or if you want I can attached my code. thanks in advance..
>
> > Here' a simple example -
> > http://econym.org.uk/gmap/basic3.htm
> > It happens to use GDownloadUrl to get an XML file, but its the
> > principle you need to see.
> > When the GDownloadUrl request is set up , an anonymous function is
> > created for the 'callback'.
> > When the data comes back, that function is run and parses the XML and
> > adds markers to the map.
> > EVERYTHING that needs to use the XML data must in that function, or
> > else there is no gaurantee that that data will be available. It comes
> > when it comes, that's the nature of asynchronous fetching across the
> > internet.
>
> > When you understood what's going on there, look at some of the other
> > examples there to see how they work,
> > likehttp://econym.org.uk/gmap/directions.htm
> > You might find this one useful -http://econym.org.uk/gmap/steps
> > intercepting the directions and modifying the display
>
> > If you've followed so far, you should be able to use what deemanth
> > gave you, effectively.
>
> > GEvent.addListener(gdir, 'load', function() {
> > // this part is the 'anonymous callback'
> > for (var i=0; i< gdir.getPolyline().getVertexCount(); i++) {
> > gpoint[i] = gdir.getPolyline().getVertex(i);
> > }
> > // whatever else you have to do with the polyline must go here
> > too
>
> > }
>
> > cheers, Ross K
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