can we infered The formula of calcuating the location of a marker by the longitude and latitude for a special map?

[parisspring]

Hi,all

Although we can't get a a uniform expression that calcuating the makers by the longitude and latitude for ervery map,Usually , we just use one or two maps of fusionMap.So we just get that expression for the map that we use.

So,when we just  use one map of fusionmap, for example,FCMap_World8.swf, can we infered one formula of calcuating the location of a marker by the longitude and latitude?

Or There is no probability for that?