Erin,
Using writeSpatialShape or writeOGR will create the shapefile format (which
includes the .shp and .dbf).

-- 
best,

Adam Sparks
GIS Specialist/Plant Pathologist
Post-Doctoral Fellow
IRRI
DAPO Box 7777
Metro, Manila
Los Baños, Laguna, Philippines

On Tue, Jan 31, 2012 at 12:43 PM, Hodgess, Erin <HodgessE@uhd.edu> wrote:

> Hi R Geo People!
>
>
>
> I have a spatial points data frame.
>
>
>
> I want to create a layer for ArcGIS.  Do I need to have both a .shp and
> .dbf file or something else, please?
>
>
>
> Thanks,
>
> Erin
>
>
>
>
>
> Erin M. Hodgess, Ph.D.
>
> Associate Professor
>
> Department of Computer and Mathematical Sciences
>
> University of Houston - Downtown
>
> mailto: hodgesse@uhd.edu
>
>
>
>
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>
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