Message-ID: <4EAE836B.2090903@oncfs.gouv.fr>
Date: 2011-10-31T11:15:55Z
From: Clément Calenge
Subject: location data format for adehabitat package
In-Reply-To: <CAEeY+MuzEgNTYFZW37=m6WW+TuZ00v+Dm4CCdp=-q7-hy4N8CQ@mail.gmail.com>
Dear Christian,
> I would like to perform some ecological niche factor analysis (ENFA)
> using the adehabitat package and am not too sure about the location
> data. Basically I have them as longitudes and latitudes at the moment
> but I could also generate then as 'tile index' (e.g. lower left corner
> has the latitude -90 and longitude -180 so the 'tile index' would be
> 0, 0 - right?). Which is the correct location data format?
The location data should be in the same coordinate system as the maps.
Therefore, the locations should be expressed as longitude/latitudes.
HTH,
Cl?ment Calenge
--
Cl?ment CALENGE
Cellule d'appui ? l'analyse de donn?es
Direction des Etudes et de la Recherche
Office national de la chasse et de la faune sauvage
Saint Benoist - 78610 Auffargis
tel. (33) 01.30.46.54.14