This question may be a duplicate of an earlier unanswered one. I still have the problem.
I am trying to use a zipcode shapefile and coming up with the following error:
tract <- readOGR(dsn = ".", layer = "cb_2013_us_zcta510_500k")
tract<-fortify(tract, region="GEOID10")
Error: isTRUE(gpclibPermitStatus()) is not TRUE
I have tried installing gpclib to fix this but then I get the following error:
install.packages("gpclib")
Installing package into ‘C:/Users/Nick/Documents/R/win-library/3.2’
(as ‘lib’ is unspecified)
Package which is only available in source form, and may need compilation of C/C++/Fortran: ‘gpclib’
These will not be installed
Help?
You can look at Hadley's master file for ggplot2/R/fortify-spatial.r. Based on this outside link, my understanding is that lines 31–34 (in it's current form) used to read something like
So back then one way to attack the problem was to turn on the license
As @rcs, @Edzer Pebesma, and this answer mention,
rgeos
should resolve the issue for more recent installations.