David Megginson writes:
> 
> Norman Vine writes:
> 
>  > ie look at the vmap0 representation for many islands and you will find
>  > that they are just 3 or 4 points wheas the same in GSHHS will show
>  > things ike atols and barrier reefs for the same place
> 
> Again, it depends on where you're looking -- it's just the opposite
> situation for the Great Lakes (vmap0 has the detail).

The Great Lakes are not the Ocean which is what GSHHS was designed 
to portray :-)

FWIW
Adding a *much* better Great Lakes coastline is relatively easy todo.
The tricky part is getting the river mouths to line up between the GSHHS
and whateser hi-res data one wants to insert

Also note that a higher res Great Lakes Boubdary might not correspond well 
with the lowres roads that one gets from the vmap0.

Then again you can get a road dataset at 1 / 250000 for all of North America

Cheers

Norman

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