[R-sig-Geo] gpclib problem with as.polygonal in spatstat ?

[Alexandre Villers]

Thanks for this,

I just updated the spatstat package and found out some changes in the 
licence.polygons()...
Best regards

Alex


On 3.12.2010 14:59, Marcelino de la Cruz wrote:
> Hi Alexander,
> Try this:
>
> spatstat.options(gpclib=TRUE)
> data(letterR)
>      m<- as.mask(letterR, dimyx=32)
>      p<- as.polygonal(m)
>
> Cheers,
>
> Marcelino
>
>
> Con fecha 3/12/2010, "Alexandre Villers"<villers.alexandre at gmail.com>
> escribió:
>
>> 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]]
>>
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-- 
Alexandre Villers, PhD.
Postdoc researcher
Spatial Ecology & Population Dynamics
Section of Ecology, Department of Biology
University of Turku
FIN-20014 Turku
Finland

@mail: alexandre.villers at utu.fi
phone: 00358 (0)2 333 5039

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<skype:aquila06?call>


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