OK. I first downloaded David's application at http://people.csail.mit.edu/dfhuynh/projects/election08/election08.html to my own server and everything worked fine. I then created two polygon KML files on my own (one through Google Earth and the other by converting from an ESRI shapefile.) I ran both of these through Babel and downloaded the output as json files. I used these two new json files as data sources in the election08 application. Everything looked great. Polygons showed up where they should. So, the translation seems to work.
I needed to make only a few changes to election08.html to make the data sources from Babel work. 1) As David mentioned, add ex:latlngOrder="lnglat" to the polygon map view 2) changed ex:polygon=".border" to ex:polygon=".polygon" 3) edited line 263 in polygon-map-view.js to use ";" as the separator between coordinate pairs. (it was set to "|") No such luck adding the data sources directly from Babel. Using the same election08.html, I took out the links to the previous json data files and added the following immediately after including exhibit-api.js. <script> Exhibit.BabelBasedImporter.mimetypeToReader["application/vnd.google-earth.kml+xml"] = "kml"; Exhibit.importers["application/vnd.google-earth.kml+xml"] = Exhibit.BabelBasedImporter; </script> <link rel="exhibit/data" type="application/vnd.google-earth.kml+xml" href="http://simile-widgets.googlecode.com/svn/babel/trunk/converters/kml-converter/tests/test1.kml"; /> This did not work for the test1.kml files or for the two kml files I created. The error I got was a javascript dialgue box stating "Failed to load javascript file:" wiht the following as the file: http://simile.mit.edu/babel/translator?reader=kml&writer=exhibit-jsonp&url=http%3A%2F%2Fsimile-widgets.googlecode.com%2Fsvn%2Fbabel%2Ftrunk%2Fconverters%2Fkml-converter%2Ftests%2Ftest1.kml&callback=Exhibit.JSONPImporter._callbacks.cb1 When you enter this URL directly in a browser, you get Babel error: No reader of name kml - John David Huynh wrote: > Hi all, > > I started to add support for KML -> Exhibit JSON conversion in Babel. > This is very very basic for now. To try it, go to > http://service.simile-widgets.org/babel/ > Select "KML" in the first column of radio buttons, "Exhibit JSON" in the > second, "data is on some web sites" in the third, and paste in this test URL > > http://simile-widgets.googlecode.com/svn/babel/trunk/converters/kml-converter/tests/test1.kml > Here's what you're supposed to see > > http://service.simile-widgets.org/babel/translator?reader=kml&writer=exhibit-json&mimetype=text/plain&url=http%3A%2F%2Fsimile-widgets.googlecode.com%2Fsvn%2Fbabel%2Ftrunk%2Fconverters%2Fkml-converter%2Ftests%2Ftest1.kml > > To enable this in Exhibit (before it gets added to Exhibit officially), > add this code after including exhibit-api.js > > <script> > > Exhibit.BabelBasedImporter.mimetypeToReader["application/vnd.google-earth.kml+xml"] > > = "kml"; > Exhibit.importers["application/vnd.google-earth.kml+xml"] = > Exhibit.BabelBasedImporter; > </script> > > Then, a KML data link would look like this > > <link rel="exhibit/data" type="application/vnd.google-earth.kml+xml" > > href="http://simile-widgets.googlecode.com/svn/babel/trunk/converters/kml-converter/tests/test1.kml"; > > /> > > I haven't tested this Exhibit integration myself. I know of one small > catch, which is that the KML converter generates pairs of lng,lat, > whereas the Exhibit map view expects lat,lng. You can make the Exhibit's > original map view takes lng,lat with this hack > > Exhibit.MapView._accessorSpecs[1].alternatives[0].bindings[0].bindingNames > = [ "lng", "lat" ]; > > If you're using the polygon map view used by > http://people.csail.mit.edu/dfhuynh/projects/election08/election08.html > then you'd just need this in the view div > ex:latlngOrder="lnglat" > > Some more thoughts are needed if different data sources use different > lat/lng orders. > > Please let me know how this works out for you. > > David > > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "SIMILE Widgets" 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/simile-widgets?hl=en -~----------~----~----~----~------~----~------~--~---
