correlogram.formula {ape} | R Documentation |
This function computes a correlogram from taxonomic levels.
correlogram.formula(formula, data = NULL, use = "all.obs")
formula |
a formula of the type y1+..+yn ~ g1/../gn , where
the y 's are the data to analyse and the g 's are the
taxonomic levels. |
data |
a data frame containing the variables specified in the
formula. If NULL , the variables are sought in the user's
workspace. |
use |
a character string specifying how to handle missing
values (i.e., NA ). This must be one of "all.obs",
"complete.obs", or "pairwise.complete.obs", or any unambiguous
abbrevation of these. In the first case, the presence of missing
values produces an error. In the second case, all rows with missing
values will be removed before computation. In the last case, missing
values are removed on a case-by-case basis. |
See the vignette in R: vignette("MoranI")
.
An object of class correlogram
which is a data frame with three
columns:
obs |
the computed Moran's I |
p.values |
the corresponding P-values |
labels |
the names of each level |
or an object of class correlogramList
containing a list of
objects of class correlogram
if several variables are given as
response in formula
.
Julien Dutheil julien.dutheil@univ-montp2.fr and Emmanuel Paradis Emmanuel.Paradis@mpl.ird.fr
data(carnivora) ### Using the formula interface: co <- correlogram.formula(SW ~ Order/SuperFamily/Family/Genus, data=carnivora) co plot(co) ### Several correlograms on the same plot: cos <- correlogram.formula(SW + FW ~ Order/SuperFamily/Family/Genus, data=carnivora) cos plot(cos)