Dear everyone, as far as I understood the setNA function in adhabitat is there to produce rows in a location dataset that have not been recorded by the GPS collar. I just can not figure out where the problem is. Hope somebody can help me.
>daten$timestamp <- strptime(daten$study.local.timestamp, format="%Y-%m-%d %H:%M") >format(round(daten$timestamp, units="hours"), format="%Y-%m-%d %H:%M:%S") >daten$timestamp <- as.POSIXct(daten$timestamp,format="%Y-%m-%d %H:%M:%S") >u<-as.ltraj(daten[,c("utm.easting","utm.northing")], daten$timestamp,id=daten$tag.local.identifier, infolocs=daten[,c("tag.local.identifier", "individual.local.identifier")]) >head([[1]]) x y date dx dy dist 407063.1 5911535 2014-05-12 16:00:00 53.75844 -8.434472e+01 100.0200 407116.9 5911451 2014-05-12 17:00:00 -417115.85704 -5.921450e+06 5936122.8652 -9999.0 -9999 2014-05-12 18:00:00 0.00000 0.000000e+00 0.0000 -9999.0 -9999 2014-05-12 20:00:00 417008.07372 5.921561e+06 5936226.4139 407009.1 5911562 2014-05-12 21:00:00 156.63876 1.096218e+02 191.1874 407165.7 5911672 2014-05-12 23:00:00 NA NA NA dt R2n abs.angle rel.angle 3600 3.523851e+13 -1.0033541 -2.5038352 3600 3.523755e+13 -1.6411217 -0.6377675 7200 0.000000e+00 NA NA 3600 0.000000e+00 1.5004904 -3.1415732 7200 3.523878e+13 0.6106172 -0.8898732 NA 3.524021e+13 NA NA >nex <- setNA(u,u[[1]]$date[1], 1*3600) Fehler in FUN(X[[i]], ...) : ltraj contains irregular data (time lag > or < tol) If you need any additional information on what I have done I am happy to provide it (I am not sure what you need to be able to help). Thank you soo much in advance. Cheers, Wiebke [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.