问题
I'm almost positive this has been answered already; however, unable to find it since XY coordinates are overloaded due to their relative definition.
What I am trying to find/figure out is how to take latitude/longitude coordinates (e.g. 12.121212, -12.323232) and convert such so they can be mapped onto a 2-dimensional plane such as a point on an image map.
Has anyone solved this issue and know of a script or another SO question that they can point me to?
Ideally I'm seeking a solution in either JavaScript or .Net; however, can convert algorithms just the same.
回答1:
I believe you are looking for something like the Mercator projection.
Somewhat related, but going the opposite direction:
http://answers.yahoo.com/question/index?qid=20080521142713AAnlVtI
Also filled with information:
http://msdn.microsoft.com/en-us/library/bb259689.aspx
回答2:
This operation is called "projection." You need to know the identity of the coordinate system you want to project into. There is a lot of arcane lore here.
See this.
https://gis.stackexchange.com/questions/11560/convert-latitude-and-longitude-into-northings-and-eastings
来源：https://stackoverflow.com/questions/8175265/converting-latitude-longitude-coordinates-to-image-map-coordinates