R help - Jun 2012 - R crashes with >kud<-kernelUD(data, h="LSCV") script

Hi, 

I am looking to perform a kernel density analysis in R, following the script
that a friend of mine is using successfully. However, unlike for her, when I
enter >kud<-kernelUD(data, h="LSCV"), R crashes and closes every
time. This does not happen when I perform a different kernel analysis
(>kud<-kernelUD(data))..

I have tried to un-install and re-install R, but it still crashes..


The script I am using is as follows: 

library(adehabitatHR)
library(maptools)
data<-read.csv("sa 4 trips 13F.csv")
xy = data[c("X", "Y")]
id<-data[,c("ID")]
coordinates(data) = c("X", "Y") 
class(data) 

kud<-kernelUD(data) # this works fine
kud<-kernelUD(data, h="LSCV") # this causes R to crash


Any suggestions would be greatly appreciated.

Many thanks for your time, 

Kind regards,
-Amanda-
	[[alternative HTML version deleted]]

Hi Amanda,

I can't reproduce this without your data set. Would it be possible for
you to give us dput(head(data, 20)) if you need further help?

Also, if you could supply the output of sessionInfo()? That's often
helpful for anything that "crashes" [that term means many things to
different people so if you could be more specific that'd be great as
well]

Finally, you may with to get in touch with the maintainer of the
adehabitatHR package directly. You can get contact info by typing
maintainer("adehabitatHR") at your prompt.

Best,
Michael

On Thu, Jun 21, 2012 at 6:25 AM, Amanda Kuepfer <amandakuepfer at
yahoo.com> wrote:
> Hi,
>
> I am looking to perform a kernel density analysis in R, following the
script that a friend of mine is using successfully. However, unlike for her,
when I enter?>kud<-kernelUD(data, h="LSCV"), R crashes and
closes every time. This does not happen when I perform a different kernel
analysis (>kud<-kernelUD(data))..
>
> I have tried to un-install and re-install R, but it still crashes..
>
>
> The script I am using is as follows:
>
> library(adehabitatHR)
> library(maptools)
> data<-read.csv("sa 4 trips 13F.csv")
> xy = data[c("X", "Y")]
> id<-data[,c("ID")]
> coordinates(data) = c("X", "Y")
> class(data)
>
> kud<-kernelUD(data) # this works fine
> kud<-kernelUD(data, h="LSCV") # this causes R to crash
>
>
> Any suggestions would be greatly appreciated.
>
> Many thanks for your time,
>
> Kind regards,
> -Amanda-
> ? ? ? ?[[alternative HTML version deleted]]
>
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>

On 2012-06-21 04:25, Amanda Kuepfer wrote:
> Hi,
>
> I am looking to perform a kernel density analysis in R, following the
script that a friend of mine is using successfully. However, unlike for her,
when I enter>kud<-kernelUD(data, h="LSCV"), R crashes and closes
every time. This does not happen when I perform a different kernel analysis
(>kud<-kernelUD(data))..
>
> I have tried to un-install and re-install R, but it still crashes..
>
>
> The script I am using is as follows:
>
> library(adehabitatHR)
> library(maptools)
> data<-read.csv("sa 4 trips 13F.csv")
> xy = data[c("X", "Y")]
> id<-data[,c("ID")]
> coordinates(data) = c("X", "Y")
> class(data)
>
> kud<-kernelUD(data) # this works fine
> kud<-kernelUD(data, h="LSCV") # this causes R to crash
In both cases, shouldn't that be 'xy' instead of 'data'?
Presumably, your data.frame 'data' (bad name) contains
at least one more column ('ID'). Or why did you define
'xy' and then not use it?

Peter Ehlers
>
>
> Any suggestions would be greatly appreciated.
>
> Many thanks for your time,
>
> Kind regards,
> -Amanda-
> 	[[alternative HTML version deleted]]