first time passage
Dear Ana, Yes you can do this with R, have a look to the package "adehabitatLT" and the functions fpt() to calculate FPT and lavielle() to perform a segmentation of the FPT time series in order to identify ARS parts. HTH David Le 08/06/2012 10:12, A.P.B. Carneiro a ?crit :
Hi I have GPS tracking data for a bird and I would like to use the first passage time method to identify and estimate the size of the zones of area restricted search (ARS) that can be indicative of foraging trips. Can I do this in R? Is there a package for it? I am really new to R, so I will be glad if someone can help me! Thank you, Ana
*************************************************** Dr. David PINAUD Ing?nieur de Recherche "Analyses spatiales" Centre d'Etudes Biologiques de Chiz? - CNRS UPR1934 79360 Villiers-en-Bois, France poste 485 Tel: +33 (0)5.49.09.35.58 Fax: +33 (0)5.49.09.65.26 http://www.cebc.cnrs.fr/ *************************************************** -------------- next part -------------- A non-text attachment was scrubbed... Name: pinaud.vcf Type: text/x-vcard Size: 324 bytes Desc: not available URL: <https://stat.ethz.ch/pipermail/r-sig-geo/attachments/20120608/5c744405/attachment.vcf>