search for: homerange

...bject is a list of home range values for a range of percent isopleths. I need to loop through a vector of percent values, so I need to paste the percent as a character on the end of the object variable. I have no idea why the percent is in character form, and I can't use a simple index value (homerange[[1]]$polygons[100]) because there are a variable number of isopleths that are calculated and [100] will not always correspond to "100". So I am stuck. What I want is: homerange[[1]]$polygons$"100" What I need is something like the following, but that works: percent<-c(&q...

...liker (d_ltraj, sig2 = 18, rangesig1= c(1, 100) ) dBB <- kernelbb(d_ltraj, sig1=dLiker$Ernie$sig1, sig2=18) data.frame(AnimalID = unique(d$AnimalID), day = unique(d$day), h = kernel.area(dBB, unout=c("km2"))) } ddply(myframe3, .(day), hrfun) # i.e. I calculated the size of the homerange for Animal "Ernie" at every single day. (The several numbers per day # represent the several Homerange levels). # What I want to do now is to calculate the homerange for Animal "Ernie" for two consecutive days. # I.e. I want a home range for the timespan 24. to 25. Septembera...

Hello, I've been trying to calculate home range sizes (for Icelandic geese!) using minimum convex polygons with the adehabitat package. I've tried to use the R code shown by demo(homerange) in adehabitat and when that didn't work I've fiddled around with it but to no avail...Below is the output of the demo that I've attempted to follow, followed by a subset of my data (for one individual) and the code I've been trying. Can anyone tell me where I may be going wrong???...

Hello, I tried to construct my very first loop today and completly failed :-( Maybe someone can help me? I have a dataframe somewhat like this one: myframe <- data.frame (Timestamp=c("24.09.2012 09:00", "24.09.2012 10:00", "24.09.2012 11:00", "25.09.2012 09:00", "25.09.2012 10:00", "25.09.2012

...arts (see ?adehabitat-package for a description): (i) management of raster maps, (ii) habitat selection / ecological niche analysis, (iii) home range analysis, and (iv) analysis of animals trajects. The package contains several demo files to allow an overview of these parts : demo(rastermaps), demo(homerange), demo(managltraj), demo(analysisltraj), demo(nichehs). * the package now contains a new function allowing the exploration of the ecological niche, which generalizes several factor analyses (ENFA, MADIFA, ...) and is closely related to several methods (Mahalanobis distances, selection ratios, etc....

...arts (see ?adehabitat-package for a description): (i) management of raster maps, (ii) habitat selection / ecological niche analysis, (iii) home range analysis, and (iv) analysis of animals trajects. The package contains several demo files to allow an overview of these parts : demo(rastermaps), demo(homerange), demo(managltraj), demo(analysisltraj), demo(nichehs). * the package now contains a new function allowing the exploration of the ecological niche, which generalizes several factor analyses (ENFA, MADIFA, ...) and is closely related to several methods (Mahalanobis distances, selection ratios, etc....

...n't get the home range functions (mcp & kernelUD) to work with my data. I think that my problem is that I don't properly understand how the package uses data frames and factors, and I may not be defining the id factor correctly. I've started out by trying to imitate the code in the homerange.r demo that comes with the ade package. The code I'm trying to repeat with my data is: ############################################### ############################################### ### ### loads the data library(adehabitat) data(puechabon) xy<-puechabon$locs[,c("X","Y"...