[R] Cross correlation/ bivariate/ mantel

[Rogerio Porto]

Sam,

maybe you'll like to read about some environmetrics packages at
http://cran.r-project.org/src/contrib/Views/Environmetrics.html
or about more specific spatial analysis packages at
http://cran.r-project.org/src/contrib/Views/Spatial.html

Have a good reading and... good luck!

Rogerio.
----- Original Message ----- 
From: "McClatchie, Sam (PIRSA-SARDI)" <mcclatchie.sam at saugov.sa.gov.au>
To: <r-help at stat.math.ethz.ch>
Sent: Friday, May 19, 2006 12:16 AM
Subject: [R] Cross correlation/ bivariate/ mantel



> Background:
> OS: Linux Ubuntu Dapper
> release: R 2.3.0
> editor: GNU Emacs 21.4.1
> front-end: ESS 5.2.3
> -----------------------------
> Colleagues
>
I have two spatial datasets (latitude, longitude, fish eggs) and (latitude, 
longitude, fish larvae) at the same 280 stations (i.e. 280 cases). I want to 
determine if the 2 datasets are spatially correlated. In other words, do 
high numbers of larvae occur where there are high numbers of eggs? I would 
like to calculate the cross correlation for these bivariate data and 
calculate a Mantel statistic as described on pg. 147 of Fortin and Dale 2005 
"Spatial analysis".

My search of R packages came up with acf and ccf functions but I don't think 
these are what I want. Does anyone know which spatial package I might find 
the appropriate test, please?

> Best fishes
>
> Sam
> ----
> Sam McClatchie,
> Biological oceanography
> South Australian Aquatic Sciences Centre
> PO Box 120, Henley Beach 5022
> Adelaide, South Australia
> email <mcclatchie.sam at saugov.sa.gov.au>
> Cellular: 0431 304 497
> Telephone: (61-8) 8207 5448
> FAX: (61-8) 8207 5481
> Research home page <http://www.members.iinet.net.au/~s.mcclatchie/>
>
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