R help - Mar 2002 - Is it possible to do Ripley's K and L functions analysis with R?

Dear friends,

   I am studying the spatial distribution of trees in
a tropical swamp forest in Brazil, and the spatial
association between the trees and other forest and non
forest elements. These are point pattern analysis of
mapped data, preferentially done with the L function
of Ripley.
   I have recently discovererd the R-project and would
like to know whether it is possible to do these
analysis with the R environment. I would also like to
know if the R language is user-friendly, since I do
not have almost any experience with programming and
have to carry out a lot of extra field work.

   Sincerely,

====Alexandre F. Souza
Programa de Pós-Graduação em Ecologia
Departamento de Botânica/IB
Universidade Estadual de Campinas
Campinas, SP
Brasil

__________________________________________________



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"Alexandre F. Souza" <alexfadigas at yahoo.com> writes:
> Dear friends,
> 
>    I am studying the spatial distribution of trees in
> a tropical swamp forest in Brazil, and the spatial
> association between the trees and other forest and non
> forest elements. These are point pattern analysis of
> mapped data, preferentially done with the L function
> of Ripley.
>    I have recently discovererd the R-project and would
> like to know whether it is possible to do these
> analysis with the R environment. I would also like to
> know if the R language is user-friendly, since I do
> not have almost any experience with programming and
> have to carry out a lot of extra field work.
library(spatial)
help(Kfn)
example(Kfn)

Whether R is user-friendly depends on the user... It does often have
the advantage of actually being able to do what people need. If you
can follow some simple examples, like those on the help pages, and
do the relevant substitutions and modifications for your own problems,
then you're basically set. There is a syntax that you have to follow,
and some associated fault-finding when you type something wrong, but
you can get quite far without actual programming. It's something that
is there for you when you need it.

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: (+45) 35327907
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Look at

library(help = splancs)

and

library(splancs)

to actually load the library.

I've found the splancs library to be extremely useful when doing analysis
of spatial point patterns

-roger
_______________________________
UCLA Department of Statistics
rpeng at stat.ucla.edu
http://www.stat.ucla.edu/~rpeng

On Thu, 28 Mar 2002, Alexandre F. Souza wrote:
> Dear friends,
> 
>    I am studying the spatial distribution of trees in
> a tropical swamp forest in Brazil, and the spatial
> association between the trees and other forest and non
> forest elements. These are point pattern analysis of
> mapped data, preferentially done with the L function
> of Ripley.
>    I have recently discovererd the R-project and would
> like to know whether it is possible to do these
> analysis with the R environment. I would also like to
> know if the R language is user-friendly, since I do
> not have almost any experience with programming and
> have to carry out a lot of extra field work.
> 
>    Sincerely,
> 
> ====> Alexandre F. Souza
> Programa de Pós-Graduação em Ecologia
> Departamento de Botânica/IB
> Universidade Estadual de Campinas
> Campinas, SP
> Brasil
> 
> __________________________________________________
> 
> 
> 
>
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> r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
> Send "info", "help", or "[un]subscribe"
> (in the "body", not the subject !)  To: r-help-request at
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>
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> 
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