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

[Taylor, RB]

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
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> 
> 

-- 
Rob Taylor

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