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Questions tagged [adehabitathr]

R package for home range estimation

adehabitatHR is a collection of tools for the estimation of animals home range.

External Links:

CRAN repository

59 questions
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Combining two or more estUDm objects into a single estUDm object

I know it is possible to combine multiple estUD objects into a single class-estUDm object using: tot <- list(estUD1=estUD1, estUD2=estUD2, estUD3=estUD3) class(tot) <- "estUDm" However, is it possible to combine two or more estUDm objects into a…
user303287
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questionable home range values with mcp() (minimum convex polygon) in R

I am trying to calculate the home range of a whole species and seperate two groups based on sex. I used mcp() and it runs but the output is questionable. Here is my…
Janneke de Bresser
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Trouble with kerneloverlaphr() after clipping land

I seem to experience a similar issue to the one raised here https://stat.ethz.ch/pipermail/r-sig-geo/2012-December/016858.html, but which never received an answer... Background: I have GPS tracking data for multiple seabird colonies and daily…
user303287
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Convert from spatialpixeldataframe to estUD

In short: I have a spatialpixeldataframe of a utilization distribution of an animal across a grid (udspdf) which I need to convert to estUD-class. Background to how I got there: After calculating the KDE of a single animal, I then need to convert…
user303287
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adehabitatHR: In proj4string(xy) : CRS object has comment, which is lost in output

I'm trying to create kernel density map from point data (available as .shp and .csv) for 5 different species,at global scale. For some individual, there is only one point locality, but for the others there are few to several points. I will use the…
fgh
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Create a raster with 1 (habitat) and 0 (non-habitat) for kernel estimation

I need to create a raster that I use as a grid for kernel estimation of seabird tracking data. The raster needs to hold values of "1" for habitat (points at sea), and "0" for non-habitat (points on land). This is because I do not want kernel density…
user303287
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How to speed up creating equal distance spatial grid in R

I am using adehabitatHR to calculate the home ranges of several eagles. I would like to create a grid of 1 km x 1 km to input into the kernelUD function. I tried to use the method as provided here: Creating an equal distance spatial grid in…
Stef
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adehabitatHR home range estimation is too small

I have lat/long data of two animals tracked in Western Australia and I'd like to find their home ranges using…
Lisa
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AdehabitatHR::kernelUD error, geographical CRS given to non-conformant data

I am trying to perform the simple task of estimating a kernel density utilisation distribution across the foraging tracks of all females in my data set (just a visualisation exercise), and have opted for the kernelUD function within the adehabitatHR…
HammerKop
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How to calculate KUD for home range analysis using the package adehabitatHR?

i am trying to calculate KUD 50% and 95% for my penguin tracking data but have run into an error. My aim is to calculate the home range densities and then export the data as a polygon. library(adehabitatHR) …
Courtney
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How to run multiple dataframes in a list through a block of code using for loops in R?

I have a dataframe full of bird sightings, and I need to take that data and create .KMV files for each known, named bird territory (territory.name). I have a block of code that will take location data and create these .KMV files. By hand this…
Sarah Hays
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Computing HR using Kernel Density. Grid issues?

My dataset includes animal locations and id. What I am trying to do is that I am trying to compute Home Range using kernel density function. As my dataset was huge, I tried it splitting the dataset into two. > library(sp) > library(adehabitatHR) >…
Srivats Chari
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Why is SpatialPointsDataFrame rounding my Y coordinates? (rounds UTM 5252636 to 5262640)

I am trying to estimate home range size using telemetry data using adehabitatHR. Every time I create a SpatialPointsDataFrame, it rounds the y-coordinate for my UTM locations. I have tried having the UTMs saved as integers, as numbers, removing NAs…
KPhillips
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Exporting a contoured Kernel density estimation plot to raster or shapefile format

I'm trying to perform Kernel density estimation in R using some GPS data that I have. My aim is to create a contoured output with each line representing 10% of the KDE. From here i want to import the output (as a shapefile or raster) into either…
Phil Roberts
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First Passage Time analysis in adehabitatLT returns only NA

Background: I try to do a First Passage Time Analysis in R using adehabitatLT. I found a good tutorial here and I can follow all the steps using my own data set up to the section with First passage Time analysis. Problem: When I use the fpt()…
Smerla
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