> > What about situations where we ask for a span from the Static API
> > (because we want to ensure that a certain area is visible)? Then I
> > think we won’t know the zoom level z...
>
> Why don't you calculate the zoom level (which fits your data) by
> yourself?
I agree. You cannot depend on Google's span to be identical to
yours. It may apply an unknown amount of padding.
You may be able to use the following:
~~(21-(Math.log(Math.max(x/X,y/Y))/Math.LN2))
where:
X = static map width
Y = static map height
x = Math.abs(LToX(Lon0)-LToX(Lon1));
y = Math.abs(LToY(Lat0)-LToY(Lat1));
"~~" performs integer truncation.
The relevant section regarding server modification of Google's images
is 10.2.
http://code.google.com/apis/maps/terms.html
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