ecospat.niche.overlap | R Documentation |
From ecospat package 3.2 : ecospat.kd, ecospat.grid.clim.dyn and ecospat.niche.overlap functions (and sp 1.4-5, adehabitatMA 0.3.14, adehabitatHR 0.4.19 packages
ecospat.kd(x, ext, R = 100, th = 0, env.mask = c(), method = "adehabitat")
ecospat.grid.clim.dyn(glob, glob1, sp, R = 100, th.sp = 0, th.env = 0,
geomask = NULL, kernel.method = "adehabitat", extend.extent = c(0, 0, 0, 0))
ecospat.niche.overlap(z1, z2, cor)
x |
two-column dataframe (or a vector) |
ext |
c(xmin, xmax) |
R |
The resolution of the grid. |
th |
quantile |
env.mask |
mask |
method |
kernel.method |
glob |
A two-column dataframe (or a vector) of the environmental values (in column) for background pixels of the whole study area (in row). |
glob1 |
A two-column dataframe (or a vector) of the environmental values (in column) for the background pixels of the species (in row). |
sp |
A two-column dataframe (or a vector) of the environmental values (in column) for the occurrences of the species (in row). |
th.sp |
The quantile used to delimit a threshold to exclude low species density values. |
th.env |
The quantile used to delimit a threshold to exclude low environmental density values of the study area. |
geomask |
A geographical mask to delimit the background extent if the analysis takes place in the geographical space.It can be a SpatialPolygon or a raster object. Note that the CRS should be the same as the one used for the points. |
kernel.method |
Method used to estimate the the kernel density. Currently, there are two methods: by default, it is the methode from 'adehabitat'. Method from the library 'ks' is also available. |
extend.extent |
Vector with extention values of the window size (see details). |
z1 |
Species 1 occurrence density grid created by ecospat.grid.clim. |
z2 |
Species 2 occurrence density grid created by ecospat.grid.clim. |
cor |
Correct the occurrence densities of each species by the prevalence of the environments in their range (TRUE = yes, FALSE = no). |
ecospat.grid.clim.dyn
,
ecospat.niche.overlap
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