[R-sig-Geo] Reading text files in Spatstat

[ONKELINX, Thierry]

The problem is probably in "test". Try to give us a (small) sample of
test so we can reproduce your problem. Otherwise it will be hard to
discover the problem.

Thierry

------------------------------------------------------------------------
----
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature
and Forest
Cel biometrie, methodologie en kwaliteitszorg / Section biometrics,
methodology and quality assurance
Gaverstraat 4
9500 Geraardsbergen
Belgium
tel. + 32 54/436 185
Thierry.Onkelinx at inbo.be
www.inbo.be 

Do not put your faith in what statistics say until you have carefully
considered what they do not say.  ~William W. Watt
A statistical analysis, properly conducted, is a delicate dissection of
uncertainties, a surgery of suppositions. ~M.J.Moroney

 

> -----Oorspronkelijk bericht-----
> Van: r-sig-geo-bounces at stat.math.ethz.ch 
> [mailto:r-sig-geo-bounces at stat.math.ethz.ch] Namens Taylor, RB
> Verzonden: dinsdag 3 juli 2007 17:11
> Aan: r-sig-geo at stat.math.ethz.ch
> Onderwerp: Re: [R-sig-Geo] Reading text files in Spatstat
> 
> Right, I have supplied the W argument now. Still no joy though....
> 
>  > as.ppp(test,c(0,10,0,10),fatal=TRUE)
> Error in as.ppp.default(test, c(0, 10, 0, 10), fatal = TRUE) :
>          Can't interpret X as a point pattern
> 
> Any ideas anyone?
> 
> Rob
> 
> Don MacQueen wrote:
> > The help page for as.ppp() explains that in a case like 
> yours (or what 
> > I assume is yours from your description), you also need to 
> supply the 
> > W argument.
> > 
> > Try looking at the help page for the ppp() function.
> > 
> > -Don
> > 
> > At 1:13 PM +0100 7/3/07, Taylor, RB wrote:
> >> Hello all,
> >>
> >> I have x,y data with an associated mark. Is there a simple way of 
> >> getting Spatstat to read this data? I have tried putting the x, y 
> >> data in separate columns in Excel and ignoring the marks, 
> saving it 
> >> as a tab-delim text file (called "test"). However the 
> as.ppp function 
> >> fails to convert it into a ppp object.
> >>
> >>
> >>  > test <- read.table("C:/temp/Rtest.txt")  > as.ppp(test) 
> Error in 
> >> as.ppp.default(test) : Can't interpret X as a point pattern
> >>
> >>
> >> Perhaps someone can answer my simple question and tell me 
> what I am 
> >> doing wrong?
> >>
> >> Thanks,
> >> Rob
> >> --
> >>
> >> _______________________________________________
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> >> R-sig-Geo at stat.math.ethz.ch
> >> https://stat.ethz.ch/mailman/listinfo/r-sig-geo
> > 
> > 
> 
> --
> Rob Taylor
> 
> University of York
> Biology Department
> PO Box 373
> York
> YO10 5YW
> United Kingdom
> 
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> 
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