| plot.sahrlocs {adehabitat} | R Documentation |
plot.sahrlocs applies the function widesII or
widesIII for each variable in the object of class
sahrlocs, and the results are stored in a list. Then, the
function plot.wi is applied to each component of
the list. This allows to investigate habitat selection by animals at
several scales for design II and III data.
## S3 method for class 'sahrlocs':
plot(x, ani = names(x$hr), var = names(x$sa),
type = c("hr.in.sa", "locs.in.hr", "locs.in.sa"),
ncla = 4, ylog = FALSE, caxis = 0.7, clab = 0.7,
errbar = c("SE", "CI"), alpha = 0.05, draw = TRUE, ...)
x |
an object of class sahrlocs |
ani |
a character vector. This vector contains the names
of the animals in x for which habitat selection should be
displayed. At least two animals are required |
var |
a character vector. This vector contains the names
of the variables in x for which habitat selection should be
displayed |
type |
a character string. Type of habitat selection that should
be investigated.
If "hr.in.sa", the selection of the home-range within the study
area is displayed. If "locs.in.sa", the selection of the
relocations within the study area is displayed. If
"locs.in.hr", the selection of the relocations within the home
range is displayed |
ncla |
numeric variables are converted to factors. This parameter controls the number of classes of these factors |
ylog |
logical. If TRUE, the selection ratios are plotted
on a log scale |
caxis |
character size on axes to be passed to
par("cex.axis") |
clab |
character size of axes labels to be passed to
par("cex.lab") |
errbar |
a character string. Type of error bars: either
"CI" for confidence intervals or "SE" for standard
errors |
alpha |
the alpha-level for the tests |
draw |
logical. If FALSE, no plot is drawn |
... |
further arguments to be passed to the function
plot.wi |
The function returns a list of objects of class wiII or
wiIII (one component per animal).
Clement Calenge clement.calenge@oncfs.gouv.fr
Manly B.F.J., McDonald L.L., Thomas, D.L., McDonald, T.L. & Erickson, W.P. (2003) Resource selection by animals - Statistical design and Analysis for field studies. Second edition. London: Kluwer academic publishers.
widesII and widesIII for further
information on objects of class wiII and wiIII,
as.sahrlocs for further information on objects of class
sahrlocs.
data(puechabon) sahr <- puechabon$sahr toto <- plot(sahr) ### Note that the wild boars named Brock and Calou ### have only one herbaceous cover class available ### (the second one), and they use it exclusively. ### So they have identical ### selection ratios (that's why the curve of Brock ### does not appear: it is hidden behind the curve ### of the boar named Calou). toto toto$Elevation