[OSM-talk] db and user statistics update

[Robert (Jamie) Munro]

Johnny Doe wrote:
> --- "Robert (Jamie) Munro" <rjmunro at arjam.net> wrote:
>> I know the author of the WMS-C
>> layer will probably
>> say Christopher Schmidt will say "But my projection
>> is right and yours
>> is wrong", but in fact they are both wrong.
> 
> I doubt that your (and probably everybody else')
> GPS receiver uses a spheric Earth model 
> to calculate the latitude and longitude from
> geocentric coordinates.

So what? This has nothing to do with GPS, collecting data. It's merely
about representing that data (which is collected from the surface of an
approximate spheroid) as a flat map.

Put it another way: if someone was to make a web site with something
like a Peters projection, or a Buckminster Fullerine projection or any
of the other weird and wonderful projections that exist, would that be
any more / less "consistent" with our GPSes? Why would it matter?

> WMS-C Mercator definition based on WGS84 ellipsoid
> is consistent with the measured lat/long data.

Are you trying to say that there is a standard for tiling in Mercator
projection written down somewhere, and we are breaking it? If so, can
you reference it, and I'll immediately join the other side of this
argument! The most important thing here is that all the layers are the
same. Currently they aren't.

Robert Munro


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