Displaying 20 results from an estimated 25 matches for "collared".
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collard
2013 Mar 15
1
Reassign values based on multiple conditions
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
2013 Mar 29
1
Create values based on a table of conditions
Hi R help forum,
I have a simple data frame of four columns - 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
2005 Dec 09
1
Residuals from GLMMs in the lme4 package
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))
2003 Oct 01
1
hypergeometric & population estimates
"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 p...
2006 Jan 30
4
Logistic regression model selection with overdispersed/autocorrelated data
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
2011 Feb 02
0
Need help subsetting time series data
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
start taking multiple
2010 Oct 28
1
adding copies of rows toa data frame based upon start and end dates
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 da...
2013 Apr 26
2
Remove reciprocal data from a grouped animal social contact dataset
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 life and other
2003 Jan 22
1
expect connect timeout, but don''t get one
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Greetings
I''m having a network problem that I don''t understand. It involves/hinges
upon an internal router running the latest Shorewall. We make weather
radar control and networking software. Our customers are experiencing a
connection timeout, but here in the office we are not. I have some
slight suspicions as to why they see a
2013 Nov 24
1
create a new dataframe with intervals and computing a weighted average for each of its rows
I need you help with this problem, I have a data-frame like this:
BHID=c(43,43,43,43,44,44,44,44,44) FROM=c(50.9,46.7,44.2,43.1,52.3,51.9,49.3,46.2,42.38) TO=c(46.7,44.2,43.1,40.9,51.9,49.3,46.2,42.38,36.3) AR=c(45,46,0.0,38.45,50.05,22.9,0,25,9) DF<-data.frame(BHID,FROM,TO,VALUE) #add the length DF$LENGTH=DF$FROM-DF$TO
where:
+ BHID: is the borehole
2005 Sep 27
1
Moaning dog...
Here's one for you phone people....
An elderly lady phoned her telephone company to report that her telephone
failed to ring when her friends called - and that on the few occasions when it
did ring, her pet dog always moaned right before the phone rang.
The telephone repairman proceeded to the scene, curious to see this psychic
dog or senile elderly lady. He climbed a nearby telephone pole,
2012 Sep 22
1
Creating multiple maps so points don't overlap
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 togeth...
2006 May 21
1
POSIX, time zone and Windows
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
2011 Feb 15
1
[slightly OT] predict.randomForest and type=”prob”
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
2006 Feb 23
0
adehabitat version 1.4
Dear all,
I have just uploaded to CRAN the version 1.4 of the
package 'adehabitat'. Significant changes are
listed below:
- The eigenanalysis of selection ratios (Calenge and Dufour, 2006, Ecology)
can now be performed using the function eisera(). It can be used for
the analysis of
habitat selection when habitat can be considered to consist of several
habitat types
(e.g.
2005 Jan 29
0
test comparing spatial point patterns?
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 '...
2006 Feb 23
0
adehabitat version 1.4
Dear all,
I have just uploaded to CRAN the version 1.4 of the
package 'adehabitat'. Significant changes are
listed below:
- The eigenanalysis of selection ratios (Calenge and Dufour, 2006, Ecology)
can now be performed using the function eisera(). It can be used for
the analysis of
habitat selection when habitat can be considered to consist of several
habitat types
(e.g.
2011 Feb 27
1
tricky (for me) merging of data
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 I...
2009 Jul 24
3
Duplicated date values aren't duplicates
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
2018 May 29
2
Yum dependency failure installing latest LibreOffice
I've been bashing my head on the wall for 2 or 3 hours for something that
should be (and has been, in the past) simple.
Trying to install the latest LibreOffice downloaded from Libreoffice.org.
I had 6.0.1.1 and downloaded 6.4.0.2, and kept getting dependency errors:
--> Running transaction check
---> Package libobasis6.0-base.x86_64 0:6.0.4.2-2 will be installed
---> Package