incmatrix: Nestedness matrix
In prabclus: Functions for Clustering and Testing of Presence-Absence, Abundance and Multilocus Genetic Data
incmatrix R Documentation
Nestedness matrix
Description
Computes species*species nestedness matrix and number of nestings
(inclusions) from regions*species presence-absence matrix.
Usage
incmatrix(regmat)
Arguments
regmat
0-1-matrix. Columns are species, rows are regions.
Value
A list with components
m
0-1-matrix. m[i,j]=1 means that the occupied region of
species j is a subset (not equal) of the region of species i.
ninc
integer. Number of strict inclusions.
neq
integer. Number of region equalities between species (not
including equality between species i and i).
Author(s)
Christian Hennig
christian.hennig@unibo.it
https://www.unibo.it/sitoweb/christian.hennig/en
References
Hausdorf, B. and Hennig, C. (2003) Nestedness of nerth-west European
land snail ranges as a consequence of differential immigration from
Pleistocene glacial refuges. Oecologia 135, 102-109.
See Also
prabtest
Examples
data(kykladspecreg)
incmatrix(t(kykladspecreg))$ninc
prabclus documentation built on Oct. 24, 2023, 1:06 a.m.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
| incmatrix | R Documentation |
Nestedness matrix
Description
Computes species*species nestedness matrix and number of nestings (inclusions) from regions*species presence-absence matrix.
Usage
incmatrix(regmat)
Arguments
regmat |
0-1-matrix. Columns are species, rows are regions. |
Value
A list with components
m |
0-1-matrix. |
ninc |
integer. Number of strict inclusions. |
neq |
integer. Number of region equalities between species (not including equality between species i and i). |
Author(s)
Christian Hennig christian.hennig@unibo.it https://www.unibo.it/sitoweb/christian.hennig/en
References
Hausdorf, B. and Hennig, C. (2003) Nestedness of nerth-west European land snail ranges as a consequence of differential immigration from Pleistocene glacial refuges. Oecologia 135, 102-109.
See Also
prabtest
Examples
data(kykladspecreg)
incmatrix(t(kykladspecreg))$ninc
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
Embedding an R snippet on your website
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.