Good afternoon

I'm trying to convert a mask to a polygonal windows with spatstat. 
However, despite, the gpclibPermit() command, I get this error message:

Warning message:
In as.polygonal(m) :

   Can't convert mask to polygon: gpclib is disabled/unavailable

While trying this

data(letterR)
    m<- as.mask(letterR, dimyx=32)
    p<- as.polygonal(m)

>  sessionInfo()
R version 2.11.1 (2010-05-31)
i386-pc-mingw32

locale:
[1] LC_COLLATE=English_United Kingdom.1252  LC_CTYPE=English_United Kingdom.1252    LC_MONETARY=English_United Kingdom.1252 LC_NUMERIC=C                            LC_TIME=English_United Kingdom.1252

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

other attached packages:
  [1] gdata_2.8.1     gpclib_1.5-1    maptools_0.7-38 lattice_0.18-8  foreign_0.8-40  rgdal_0.6-29    sp_0.9-72       spatstat_1.21-2 deldir_0.0-13   mgcv_1.6-2

loaded via a namespace (and not attached):
[1] grid_2.11.1        gtools_2.6.2       Matrix_0.999375-39 nlme_3.1-96        tools_2.11.1


Thanks for any hint

Alex


<http://www.mozilla-europe.org/fr/>

	[[alternative HTML version deleted]]

