[OSM-talk] Mathematic genius needed

[Bernhard zwischenbrugger]

Stefan de Konink schrieb:
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> Op 22-03-10 04:20, Bernhard zwischenbrugger schreef:
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>> Hint:
>>
>> At first you maybe think
>> centerLat = (minlat + matlat)/2;
>> centerLng = (minlng + matlng)/2;
>> could be the solution.
>>
>> But that does not give the correct result.
>> The center must be the center in screen coordinates.
>>     
>
> I think your problem is more fundamental; because min and max are not
> going to work ;) lefttop, righttop, leftbottom, right bottom are.
>   
Good Point you are right on that.
I have 2 Points in WGS84:

Southeast (example 0,0)
Northwest (example 90, 180)

A Mercator projection will result in a y value of infinite for this example.
Not easy ...



Bernhard






>
> Isn't it the idea:
>
> (max - min) / 2?
>
> You propose it the opposite.
>
> Its late, but I hope you have something for what I have attached.
>
>
> Stefan
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