R package for home range estimation
adehabitatHR is a collection of tools for the estimation of animals home range.
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Questions tagged [adehabitathr]
59 questions
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How do I calculate the area of a Brownian bridge movement model?
In the adehabitatHR package there is some sample code to calculate Brownian bridge movement model for a wild boar using the kernelbb function. I would like to calculate the area of the object that results. I'd also like to know the units of the…
adkane
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Vector addition (subtraction) in R for movement paths
I have a data frame which includes the movement path of an animal in lat/lon coordinates.
From this I have derived speed and bearing over ground. The data frame also contains the wind vector relative to the animal's position i.e. speed and bearing…
Jojo
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2 answers
export khrud object from kernelUD to raster
In R, how can I export a khrud object from function kernelUD in package adehabitat to a raster file (geoTiff)?
I tried following this thread (R: how to create raster layer from an estUDm object) using the code…
ecologist1234
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Subsetting for a minimum number of locations for MCP in R, dropping individual names
I have a very similar question to that posted here: Subsetting for a minimum number of locations for MCP in R
And here Subset data frame based on number of rows per group
Where I'm trying to subset a dataset dropping all individuals with less than 5…
Francesca
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How to create a single data set that contains two data frames using an excel file
I need to create a single data set from an excel file that looks likes the following picture 1. When I export the file to mimic it in excel, the format does not work correctly. This is what the file looks like when it is exported as an excel 2.…
ScottFields226
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Create boundary to home range estimation (KUD)
I'm using adehabitatHR to estimate home range for penguins. Naturally, they can't swim on land, and I have been trying to add a boundary around the coastline to prevent the KUD from adding more area than is feasible.
The area I'm trying to create…
Zairi
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How to convert my lat and longs to UTM within my dataframe
I'm a bit stuck at the moment, i have been able to create a spatial points data frame and out of this i made an object of the class Ltraj. This i will need to do further analysis. But my x and y coordinates aren't in UTM which might give problems if…
SamR
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R language, problems with SpatialPixelsDataFrame
The following two scripts will generate a "SpatialPixelDataFrame" object:
# FIRST
library(rgdal)
elev.grid <- readGDAL("whatever.asc")
elev.grid <- as(elev.grid, "SpatialPixelsDataFrame")
#…
perep1972
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Incorrect Plot when plotting SpatialPointsDataFrame
I am new to R and am having trouble plotting a SpatialPointsDataFrame, with eventual hopes of creating minimum convex polygons. I've been trying for a few days but can't find anything to fix this problem.
I load my excel data as TXT. File has 3…
Katie Sheridan
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R Subset Data from Spatialdataframe
I am trying to analyze spatial data in R. I ran into problems trying to subset my data for the analysis. First of all my raw data had this format. The Dataframe is called "locs":
AnID X Y
1 Ind7 408046.3 5508986
2 Ind7 407445.4…
h4g0
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Having trouble calculating Home Range area
I am having a lot of trouble in R calculating the area of home range of an animal. I thought once I produced a home range (if I've done it correctly) calculating the area would be easy, but no
I've pasted some of the code I've been trying. I…
Colin
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Plot individuals home-range with Adehabitat
I am trying to put the name from the individuals of my research in a polygons home-range plot, but after many attempts I still can not achieve it.
Here and example of my data: X and Y are coordinates and id are individuals
X Y id
29 …
juanentuculandia
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1 answer
adehabitatHR locoh.k orphan holes
I am trying to optimise the k parameter using AdehabitatHR LoCoH.k.area and it stops running when the topology is such that it can't produce a polygon. Message is:
rgeos_PolyCreateComment: orphaned hole, cannot find containing polygon
for hole…
Janine
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2 answers
Converting my dates into a POSIXct class
I'm currently working my way through the adehabitatLT package.
I've put my date_time column into characters and named it da:
da<-as.character(dat$date_time)
head(da)
[1] "7/08/2015 0:22" "7/08/2015 0:52" "7/08/2015 1:22" "7/08/2015 1:52" "7/08/2015…
SamR
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