On Fri, 5 Dec 2008, James Nylen wrote:
This happens to me as well. I just create a new column in the shapefile
object's data, like:
shp$AreaNum = as.numeric(as.vector(shp$AREA))
If all you want to know is "why is it coded this way" then I have no idea,
sorry.
You could look at ogrInfo() for the same dsn= and layer= before you
import. In principle, if the driver reports "Integer", "Real", or
"String", this should be respected, so I'd be interested in seeing a case.
Roger
-James
On Fri, Dec 5, 2008 at 10:29 AM, Agustin Lobo <[EMAIL PROTECTED]> wrote:
I often get some numeric fields (i.e, AREA in this case) imported
as factors by readOGR() from shp files. WHy could it be?
I've reviewed the field in the dbf file and do not
see any non-numeric value.
Thanks
Agus
--
Dr. Agustin Lobo
Institut de Ciencies de la Terra "Jaume Almera" (CSIC)
LLuis Sole Sabaris s/n
08028 Barcelona
Spain
Tel. 34 934095410
Fax. 34 934110012
email: [EMAIL PROTECTED]
http://www.ija.csic.es/gt/obster
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Roger Bivand
Economic Geography Section, Department of Economics, Norwegian School of
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