
> 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@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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