[adegenet-forum] Isolation by distance (Mantel test)

Vojtěch Zeisek vojta at trapa.cz
Sun Oct 12 12:28:06 CEST 2014


Dne Ne 12. října 2014 10:47:23, Isabelle Gemmer napsal(a):
> Hello,
> I installed coordinates for the Mantel test.
>  > data1$other$xy<-dataxy
>  > Dgeo <- dist(data1$other$xy)
>  > ibd <- mantel.randtest(Dgen,Dgeo)
> It worked well. But in reality, the examined organisms can not swim
> through a lake, they can only migrate along a shoreline. Thus, I
> measured the distances and provide an own matrix of geographic distances.
> My question is: Can I also install own measured geographic distances
> instead of coordinates?

Sure, just as Dgeo use matrix o distances along shoreline, so You wouldn't use 
dist function, but computed then for example in GIS and then imported into R.

> Regards,
> Isabelle


Vojtěch Zeisek

Department of Botany, Faculty of Science
Charles University in Prague
Benátská 2, Prague, 12801, CZ

Institute of Botany, Academy of Science
Zámek 1, Průhonice, 25243, CZ

Czech Republic
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