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Hi, I am trying to read my TDR data into R using the readTDR function for the diveMove package. > seal <- readTDR("file location and name here", dateCol=1, depthCol=3, > speed=FALSE, subsamp=1, concurrentCols=4:5) But I keep getting the following error: > Error: all(!is.na(time)) is not TRUE All my columns to have values in them (there are no empty records) The manual

Hello all, In lme4 if you want to model two non-nested random effects you code it like this: mod1 <- lmer(y~x + (1|randomvar1) + (1|randomvar2)) How would you go about to model something similar in nlme? In my database I have two variables for which I have repeated measures, lets call them "individual" and "year". But none of the "individuals" were measured in

Hi all, I have a 2 files, one with a series of beginning and end times of animal dives in (lets call it dives). The other file is readings from a time-depth recorder, there is a datetime reading for every second, a temperature and light level reading (lets call it tdr). Now I want to say from the file dives, using the start and end time of the dives, go to the tdr file and find me the