I've an openlayers (2.7) application where I would like to change the map
projection depending on the zoom level.
As a test I change from EPSG:900913 to EPSG:4326.
To achieve this I destroy the map and then re-initalise the map adding the
different options.
I have attached an event on the zoomend of the map which is where the
destroy and re-initalise takes place.
Although it does work I get the error message this.events is null in FFOX
error console.
I've done a test where I don't destroy the original map, and so the number
of maps grows, but I know longer get the error message. So the error does
seem to come from destroying the map with an event attached to it. I have
tried unregistering the event first but the application still errors.
I add the event using the following:
map1.events.register('zoomend', this, function(){
testSwap();
});
and then in testSwap() I remove the event using the following:
map1.events.unregister('zoomend',this, testSwap);
If anyone has tried a similar application and can help, that would be
appreciated.
Cheers
Ceri
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