On 02/04/2009, [email protected] <[email protected]> wrote: > > On Apr 2, 2:38 pm, Yasir <[email protected]> wrote: > > the book that Im going through, "Google Maps Mashups with Google > > Mapplets". It reads: "Since communication between a Mapplet and the > > map is asynchronous... Google Maps API calls, on the other hand, are > > synchronous, returning immediatly after the call is made". > > > This [doesnt tell the whole story]. [SOME] Google Map API calls are > asynchronous, > returning immediately after the call is made.
changed the bits in [] Just to clarify this, *both* as used in the Maps API, eg GMap2.getCenter is synchronous, and GDirections.load is asynchronous The difference is, many of the calls that are synchronous in the Maps API, are in fact asynchronous in the Mapplets API. So much so that nearly all the *.get* methods are asynchronous. > > Mike Williams' explanation in his tutorial may help: > Part 2 Asynchronous I/O > http://econym.org.uk/gmap/async.htm > > -- Larry > > > > > > Anyway, can I ask why the map isn't working then? > > > > On Apr 2, 10:00 pm, "[email protected]" <[email protected]> > > wrote: > > > > > > > > > On Apr 2, 12:30 pm, Yasir <[email protected]> wrote: > > > > > > thanks Rossko and Pil for your replies. > > > > > > I've uplaoded the html file with the javascript, that I have worked on > > > > so far:www.iborough.co.uk/tourfilter.html > > > > > > The original Mapplets XML file that I am trying to work on is > here:http://www.iborough.co.uk/example_5_3_map_concert_data.xml > > > > > > so far I have managed to include the loadmap function. The other > > > > things involve alot more Javascript. I think it's the following > > > > section that needs to be edited for it to start working: > > > > > > // find the proper zoom level for the bounds > > > > // and center the map so that all of the markers are visible > > > > map.getBoundsZoomLevelAsync(bounds, function(level) { > > > > map.setCenter(bounds.getCenter()); > > > > map.setZoom(level); > > > > > > // don't render the list until we've centered the map > > > > _gel("content").innerHTML = displayHTML; > > > > _gel("status").innerHTML = "Done loading concert data"; > > > > }); > > > > > > // resize the mapplet window height > > > > _IG_AdjustIFrameHeight(); > > > > > > } > > > > > > function loadData(city) { > > > > > > // make sure a city has been selected > > > > if (city == "") > > > > return; > > > > > > var url = "http://www.iborough.co.uk/xml/"; + city + ".xml"; > > > > > > // update the status field and clear out anything we have in > > > > 'content' > > > > _gel("status").innerHTML = "loading..."; > > > > _gel("content").innerHTML = ""; > > > > > > // fetch the XML data from the url > > > > _IG_FetchXmlContent(url, _IG_Callback(handleFetchContent, > city)); > > > > > > } > > > > > > I have read that Google Maps API calls are synchronous wheres > > > > communication between Mapplet and map is asynchronous. So I will have > > > > to somehow change the getBoundsZoomLevelAsync call. > > > > > Where did you read that? Most of the calls from the API that return > > > data are asynchronous. > > > > > > Also, in the loadData function, _IG_FetchXmlContent(url, _IG_Callback > > > > (handleFetchContent, city)); has been used to retrieve the remote > > > > data, but with Google Maps API, I have to use GDownloadURL and GXml. > > > > > > > Any help? Thanks, Yasir- Hide quoted text - > > > > - Show quoted text - > > > > -- Barry - www.nearby.org.uk - www.geograph.org.uk - --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Maps API" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/Google-Maps-API?hl=en -~----------~----~----~----~------~----~------~--~---
