Dear list members,

I am running R 2.15.1 on a MAC OSX 10.7.

I receive an error message regarding gpclib (see below):

> library(rgdal)
> library(maptools)
> library(rgeos)
Loading required package: stringr
rgeos: (SVN revision 330)
 GEOS runtime version: 3.3.2-CAPI-1.7.2
 Polygon checking: TRUE
 WARNING! if you turn polygon checking off, and polygons are
 not valid in GEOS, you risk losing data as your R session may crash!

> indice <- readOGR(".", "indicesalud2007crtm")
OGR data source with driver: ESRI Shapefile
Source: ".", layer: "indicesalud2007crtm"
with 82 features and 27 fields
Feature type: wkbPolygon with 2 dimensions

> map <- fortify(indice)
Using NCANTON to define regions.
Error: gpclib, maptools package required for this functionality.  Please
install and try again.

> gpclibPermit()
[1] FALSE

Best,

Manuel


-- 
*Manuel Spínola, Ph.D.*
Instituto Internacional en Conservación y Manejo de Vida Silvestre
Universidad Nacional
Apartado 1350-3000
Heredia
COSTA RICA
mspinola@una.ac.cr
mspinola10@gmail.com
Teléfono: (506) 2277-3598
Fax: (506) 2237-7036
Personal website: Lobito de río <https://sites.google.com/site/lobitoderio/>
Institutional website: ICOMVIS <http://www.icomvis.una.ac.cr/>

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