search for: collar

Hi all, I have a simple data frame of three columns - one of numbers (really a categorical variable), one of dates and one of data. Imagine: collar date data 1 01/01/2013 x 2 02/01/2013 y 3 04/01/2013 z 4 04/01/2013 a 5 07/01/2013 b The 'collar' is a GPS collar that's been worn by an animal for a certain amount of time, and then may have been worn by a different animal after changes when the batteries needed to be changed. When a...

...ns - one of numbers (really a categorical variable), one of dates and one of data. I have over 500,000 data points to work with, spread over 40 files, each named after a different animal. These are contact data recorded by proximity loggers over two years between the animals of the file name and collars being worn by other animals. The collar may have been worn by more than one different animal in the study period. So for example... filename: RD2 And the data looks like: (I'm sorry here, dput(head(RD2, 200)) was outputting all the times, such that it was too large for the console, so I ju...

Hello there This is the first time I have used r-help message board so I hope I have got the right address. I am trying to check the residuals of a GLMM model(run using the package lme4). I have been able to check the residiuals of REMLs in lme4 using the following: m1<-lmer(vTotal~Week+fCollar+ (1|fCat), collars) res<-resid(m1) plot(res) qqnorm(res) library(MASS) par(mfrow=c(2,3)) res<-residuals(m1) truehist(res,main="Histogram of Residuals") curve(dnorm(x,mean=mean(res),sd=sd(res)),add=TRUE) qqnorm(fitted(m1),resid(m1), ylim=range(fitted(m1)), main="QQNorm Plot&quo...

"help" We want to estimate the number of caribou in Jasper. We recently conducted an aerial survey and saw 70 uncollared caribou and 8 of 11 collared caribou. We want to estimate the number of caribou in this population with 95% confidence limits. Gary White uses the hypergeometric distribution and determines the population estimates using maximum likelihood and 95%CL as -2LogLikelihoods. Below, I determined the...

I am creating habitat selection models for caribou and other species with data collected from GPS collars. In my current situation the radio-collars recorded the locations of 30 caribou every 6 hours. I am then comparing resources used at caribou locations to random locations using logistic regression (standard habitat analysis). The data is therefore highly autocorrelated and this causes Type I er...

Hi all, I have multiple datasets of time series data taken from GPS collars. The collars are supposed to take a fix every hour on the half hour, i.e., 0:30, 1:30, 2:30...23:30, (because it sometimes takes longer for the collars to acquire a location the minute of these locations vary from 30-34) but because of a software glitch in the collars, at random times the collars...

Hello All and thanks in advance for any advice. I have a data frame with rows corresponding radio-collared animals (see sample data below). There is a start date (DATESTART), and end date (DATEEND), and the number of days on air (DAYSONAIR). What I would like to do is add a column called DATE to so that each row ID has a row for every day that the radio collar was on the air while copying all other...

Hi r-help forum, I have been collecting contact data (with proximity logger collars) between a few different species of animal. All animals wear the collars, and any contact between the animals should be detected and recorded by both collars. However, this isn't always the case and more contacts may be recorded on one collar of the two. This is fine, it depends on battery lif...

...at we are not proxying ARPs. Perhaps I am wrong here? I''m not sure what more information you need to be able to help with this problem. I hope that someone out there can help, though. Thanks for your time. Sincerely Ben - -- - ---------------------------------------- (o__ Benjamin Collar //\ GAMIC mbH ++49 (0)241 889 110 V_/_ Developer/System Administrator -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQE+Lmxf6BghCGhQmsURAifoAJ4vqsCKJC4FuuoXjy3t/DWUKncU1wCgpwUr sU6W/D5UeivEpHoB3JgP4Y...

...-(n-1)*div,-div) to[n]=TO range<-data.frame(BHID=borehole_names[i,1],FROM=from,TO=to) # create a data.frame class object range<-range[!(range$FROM==range$TO),] # erase the last value } # subset the data set for every borehole borehole_names<-unique(DF["BHID"]) # collars id with cores borehole_number<-nrow(borehole_names) # collar number #define an empty data.frame borehole_Out<-data.frame(BHID=integer(),FROM=numeric(),TO=numeric()) # initialize the counter i=1 # from this point starts the loop--------------- while(i<=borehole_numbe...

...is test set, and dialed the subscriber's house. The phone didn't ring right away, but then the dog moaned loudly and the telephone began to ring. Climbing down from the pole, the telephone repairman found: 1. The dog was tied to the telephone system's ground wire via a steel chain and collar. 2. The wire connection to the ground rod was loose. 3. The dog was receiving voltage of signaling current when the phone number was called. 4. After a couple of such jolts, the dog would start moaning and then urinate on himself and the ground. The wet ground would complete the circuit, thus causi...

Hello, I am working within package 'maptools' to plot a number of collared animal locations by reading in shapefiles of locations, roads, hydrology, and landownership as imported layers. The trouble I have is that some individual locations are overlapping and I would like to "zoom" into or create new plots for overlapping points/points that are too close toge...

Dear Listers, Apologize to pile up on the 'tz' issue in POSIX objects. I have a 'simple' thing on which I must make up my mind but cannot do it from the existing R-help threads. I am currently working on dog telemetry in China, and download time information from GPS collars. I would like to set up the corresponding POSIXxx variables in R to a given time zone. Eg Pekin GMT+8:00. I cannot find out how to do it properly. For instance: mydate<-""06/05/16/11:30:00"" mydate<-strptime(mydate, "%y/%m/%d/%H:%M:%S") mydate [1] "200...

Dear all , I would like to use the function randomForest to predict the probability of relocation failure of a GPS collar as a function of several environmental variables x (both factor and numeric: slope, vegetation, etc.) on a given area. The response variable y is thus success (0)/failure(1) of the relocation, and the sampling unit is the pixel of a raster map. My aim is to build a map predicting the probabilit...

...sed for the analysis of habitat selection when habitat can be considered to consist of several habitat types (e.g. vegetation types). - A new class, the class "ltraj", is now available for the analysis of trajectories of animals (e.g. for the analysis of data collected using GPS collars). This class automatically computes the turning angles between successive moves, the absolute angles for each move, the speeds and the net squared displacement for each relocation. This class is to be prefered to the class "traj". The class "traj" is now deprecated....

I'm working with animal relocation data. These are x-y coordinates of radio-collared coyotes over a period of time. Relocations are far enough apart in time to be considered independent. We want to test if the pattern of space-use has changed from one year to the next. Relocations roughly follow a 2D Gaussian distribution, but points are often clustered near one or more ...

...sed for the analysis of habitat selection when habitat can be considered to consist of several habitat types (e.g. vegetation types). - A new class, the class "ltraj", is now available for the analysis of trajectories of animals (e.g. for the analysis of data collected using GPS collars). This class automatically computes the turning angles between successive moves, the absolute angles for each move, the speeds and the net squared displacement for each relocation. This class is to be prefered to the class "traj". The class "traj" is now deprecated....

Dear List, I am having trouble with a tricky merging task. I have one data sheet that has dates (continuous) that radio collared individuals were monitored via telemetry. I have a different sheet containing data from instances where individuals were recaptured and associated body condition data was recorded (sheet 2). I would like to merge the two sheets by individual and date (I can do this with the merge function) but...

Dear list, I just had a function (as.ltraj in Adehabitat) give me the following error: "Error in as.ltraj(xy, id, date = da) : non unique dates for a given burst" I checked my dates and got the following: > dupes<-mydata$DateTime[duplicated(mydata$DateTime)] > dupes [1] (07/30/02 00:00:00) (08/06/03 17:45:00) Is there a reason different dates would come up as duplicate

...I installed it, I got no such errors. Note that I am now on the 7.5 version, 7.5 (1804), and when I previously installed 6.0 I was still on the previous release, so I wonder if yum has become broken during the 7.5 run-up. A lot of time had transpired here and I was getting a little warm under the collar, so I tried: rpm -ivh *.rpm which worked just fine. voila! I did this with the older version, but I wanted the newer one, so I did "yum remove libreoffice\* libobasis\*" and it complained about the RPM database being modified, but it did the deed. then I tried installing 6.4.0.2 again,...