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Dear list users and maptools mainteners,<br>
<br>
I'm a bit confused by the behaviour of the function
as.SpatialPolygons.owin() <br>
<br>
library(spatstat)<br>
library(maptools)<br>
<br>
disc.test<-disc(radius=1, centre=c(0,0))<br>
disc.sp<-as.SpatialPolygons.owin(disc.test) # <-- fails and
return <font color="#ff0000">a error: could not find function
"as.SpatialPolygons.owin"</font><br>
disc.sp<-as(disc.test, "SpatialPolygons") # <-- works fine<br>
<br>
On the other hand, as.SpatialPoints.ppp(object.ppp) and
as(object.ppp, "SpatialPoints") work fine. I haven't tested all the
possibilities between spatstat and sp object, so I don't know if
this "bug", if it is really one (everything seems to work fine on my
PC), is widespread. <br>
If not, I guess it was solely my Murphy's rule practise for today...<br>
<br>
<br>
Alex<br>
<br>
P.S.: sessionInfo()<br>
sion 2.12.1 (2010-12-16)<br>
Platform: x86_64-pc-mingw32/x64 (64-bit)<br>
<br>
locale:<br>
[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 <br>
<br>
attached base packages:<br>
[1] grid grDevices datasets splines graphics stats
tcltk utils methods base <br>
<br>
other attached packages:<br>
[1] gpclib_1.5-1 maptools_0.7-38 foreign_0.8-41
spatstat_1.21-4 deldir_0.0-13 mgcv_1.7-2
rgdal_0.6-33 sp_0.9-76 effects_2.0-10 <br>
[10] colorspace_1.0-1 nnet_7.3-1 MASS_7.3-9
ncf_1.1-3 gplots_2.8.0 caTools_1.11
bitops_1.0-4.1 gdata_2.8.1 gtools_2.6.2 <br>
[19] scatterplot3d_0.3-31 lattice_0.19-13 svSocket_0.9-51
TinnR_1.0.3 R2HTML_2.2 Hmisc_3.8-3
survival_2.36-2 <br>
<br>
loaded via a namespace (and not attached):<br>
[1] cluster_1.13.2 Matrix_0.999375-46 nlme_3.1-97
svMisc_0.9-61 tools_2.12.1 <br>
<br>
<div class="moz-signature">-- <br>
<address>Alexandre Villers, PhD. <br>
Postdoc researcher<br>
Spatial
Ecology & Population Dynamics<br>
Section of Ecology, Department
of Biology<br>
University of Turku<br>
FIN-20014 Turku<br>
Finland<br>
<br>
@mail:
alexandre.villers@utu.fi<br>
phone: 00358 (0)2 333 5039<br>
<a
href="http://vanha.sci.utu.fi/biologia/ekologia/villers_eng.htm">web
page</a></address>
<address><br>
Skype <a href="skype:aquila06?call"><img
src="cid:part1.09050100.05010603@gmail.com" align="BOTTOM"
border="0" width="53" height="53"></a></address>
<br>
<b>Use open source and free softwares</b><br>
<a href="http://cran.r-project.org/"><img
src="cid:part2.05090404.03000203@gmail.com" align="BOTTOM"
border="0" width="66" height="50"></a>
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