| image.sahrlocs {adehabitat} | R Documentation |
image.sahrlocs allows a gray-level display of the composition
of home ranges (different colors are used for factors).
For a given variable, the minimum gray level (default is
"white") and the maximum gray level (default is "black")
represents respectively the minimum and the maximum of the variable
***on the study area***.
## S3 method for class 'sahrlocs':
image(x, ani = names(x$hr), var = names(x$sa),
mar = c(0, 0, 0, 0), axes = FALSE, dfidxy = NULL, colpts =
"black", pch = 21, bg = "white", inv = FALSE, cexpts = 0.6,
csub = 2, possub = c("bottomleft", "bottomright", "topleft",
"topright"), ...)
x |
an object of class sahrlocs |
ani |
a character vector giving the names of the
variables of the "hr" component (the animals) for which a
display is wanted |
var |
a character vector giving the names of the
variables of the "sa" component (the habitat variables) for
which a display is wanted |
mar |
the graphical parameter mar (see
par) |
axes |
logical. Whether the axes should be plotted |
csub |
the character size for the legend, used with
par("cex")*csub |
possub |
a character string indicating the sub-title position
("topleft", "topright", "bottomleft",
"bottomright") |
dfidxy |
an optional data frame with three columns giving the
identity and the coordinates of the relocations of each animal. (if
not NULL, the relocations of each animal are plotted in its
home range, see Examples) |
colpts |
if dfidxy is not NULL, the color of the
points to be used for the plot of the relocations |
pch |
if dfidxy is not NULL, the size of the points
to be used for the plot of the relocations (see par) |
bg |
if dfidxy is not NULL, the background color to
be used for the plot of the relocations (see par) |
inv |
by default, lower values of the mapped variables are
brighter. If FALSE, the lower values are darker |
cexpts |
if dfidxy is not NULL, the size of the points |
... |
additionnal parameters to be passed to the generic
function image |
Clement Calenge clement.calenge@oncfs.gouv.fr
as.sahrlocs for additionnal information on
objects of class sahrlocs
data(puechabon) (sahr <- puechabon$sahr) ## Displays all the variables for a given animal image(sahr, ani = "Chou") ## Displays all the animals for a given variable image(sahr, var = "Elevation") ## Load and displays the relocations of the animals locs <- puechabon$locs[,c(1,4:5)] image(sahr, var = "Elevation", dfidxy = locs, pch = 21)