>
> But is this a general, overall error in the maps, or is it cumulative
> error?

It's a differnce between the satellite and normal maps at the time I
created those tiles, which is about 2 years ago.
I don't believe its cumulative because I spotted differences in one
direction at some spots, and a completely different direction in other
spots.


>As for your custom layers, what's the source of the data? Is it
> in NAD83 or WGS84? NAD83 can be as much as 3 meters off from WGS84.
> All census data is NAD83.

They came from municipal data in Lambert Conic NAD27 and, 2 years ago,
they fitted quite well with either the satellite tiles or the normal
tiles of that time, but not with both at the same time, which is why
the shift buttons are there.

--
Marcelo - http://maps.forum.nu
--



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