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

[Taylor, RB]

Ok, "test" is just a small test data set of x, y coords.

3.45	5.34
2.78	5.67
3.89	1.345
2.34	3.78
3.45	5.34
2.78	5.67
3.89	1.345
2.34	3.78


You could make it easily in Excel or a similar program. x coords are in 
the first column, y coords are in the 2nd column. It is saved as a tab 
delimited text file called "test".


Cheers,
Rob

ONKELINX, Thierry wrote:
> 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
>>
>> Work +44 (0)1904 32 8557
>> Mob  +44 (0)777 258 5390
>>
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>>
> 

-- 
Rob Taylor

University of York
Biology Department
PO Box 373
York
YO10 5YW
United Kingdom

Work +44 (0)1904 32 8557
Mob  +44 (0)777 258 5390