Re: [R] Euclidean Distance in R

From: ONKELINX, Thierry <Thierry.ONKELINX_at_inbo.be>
Date: Tue, 05 Apr 2011 08:31:14 +0000

Dear Paul,

The command

RSiteSearch("nearest neighbour")

Will give you the answer that you need. (The second hit is the function you want).

Best regards,

Thierry



ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek
team Biometrie & Kwaliteitszorg
Gaverstraat 4
9500 Geraardsbergen
Belgium

Research Institute for Nature and Forest team Biometrics & Quality Assurance
Gaverstraat 4
9500 Geraardsbergen
Belgium

tel. + 32 54/436 185
Thierry.Onkelinx_at_inbo.be
www.inbo.be

To call in the statistician after the experiment is done may be no more than asking him to perform a post-mortem examination: he may be able to say what the experiment died of. ~ Sir Ronald Aylmer Fisher

The plural of anecdote is not data.
~ Roger Brinner

The combination of some data and an aching desire for an answer does not ensure that a reasonable answer can be extracted from a given body of data. ~ John Tukey   

> -----Oorspronkelijk bericht-----
> Van: r-help-bounces@r-project.org
> [mailto:r-help-bounces_at_r-project.org] Namens Paul Duckett
> Verzonden: dinsdag 5 april 2011 3:44
> Aan: R-help_at_r-project.org
> Onderwerp: [R] Euclidean Distance in R
>
> Hi
>
> 1. I have two raster files *.asc (identical size) 2. The data
> in each contain presence or absence data in each cell
> represented by a 1 or 0 respectively 3. I would like to take
> the location of each 1 (presence cell) in raster file 1 and
> measure the euclidean distance to the nearest 1 (presence
> cell) in raster file 2.
>
> Obviously in some cases there will be overlap so the distance
> will be zero.
>
> 4. I would like the output file to have each individual
> measurement on a seperate line in a single file.
>
>
> I am very new to R, so any help would be appreciated.
>
> Best regards
> Paul
> --
> Paul Duckett - PhD Candidate
> Conservation Genetics Lab
> E8A 264
> Biological Sciences
> Faculty of Science
> Macquarie University
> North Ryde
> NSW 2109
> http://paulduckett.redbubble.com
>
> ______________________________________________
> R-help_at_r-project.org mailing list
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> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>



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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. Received on Tue 05 Apr 2011 - 08:34:47 GMT

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