[R] projections

[Ray Brownrigg]

If you use map() with the projection= option, then see ?mapproject, which allows you to 
project arbitrary (long/lat) points with the previously defined projection.  Then you use 
points() to overlay them onto the map.

HTH,
Ray Brownrigg

On Tue, 16 Feb 2010, Shaun Langley wrote:
> I have lat/lon coordinates in Michigan GeoRef that I need to re-project so
> they can be shown over a Michigan county map generated from the Maps
> library.  I'm very confused as to how to do this.  Can anyone help?
>
> Thanks,
>
> Shaun
>
>
>
>
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