geographical accuracy

Andy Armstrong andy at
Wed Feb 21 14:54:39 GMT 2007

On 21 Feb 2007, at 14:45, Dirk Koopman wrote:
> Or I have an implementation in C that will do it. But you should  
> use the correct transformation, which is (to an extent) iterative  
> with the correct ellipsoid (OSGB80 [there is an OSGB36]). Also you  
> need to convert to the correct ellipsoid for the lat/lang system  
> you are using. The chances are that the lat/long datum is WGS84,  
> but it may not be.

It is for Google.

Andy Armstrong,

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