C_sor: Pairwise Sorensen associations among species in a community...
In petrkeil/spasm: Species association measures for various data types
Description
Usage
Arguments
Value
References
View source: R/measures_for_incidence_matrices.R
Description
Arita (2017) also quotes this to be the "index of co-incidence" of Dice (1945).
Note: Before the calculation, species (rows) with zero occurrences, and sites (columns)
with zero species are removed from m.
Usage
1
Arguments
m
Community data matrix with species as rows and sites as columns. Can
contain either incidences (1/0) or abundances (natural numbers).
clean
Logical. Do you want to remove zero-sum rows or columns? When the index needs
the "d" fraction (sites where no species occurs), only zero-sum rows are removed.
Value
A dist or data.frame objects with the pairwise association values.
References
Arita H. (2015) Multisite and multispecies measures of overlap,
co-occurrence and co-diversity. Ecography 40: 709-718.
Dice L.R. (1945) Measures of the amount of ecological association
between species. Ecology 94: 2403-2414.
petrkeil/spasm documentation built on Jan. 15, 2021, 6:08 p.m.
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Description Usage Arguments Value References
View source: R/measures_for_incidence_matrices.R
Description
Arita (2017) also quotes this to be the "index of co-incidence" of Dice (1945). Note: Before the calculation, species (rows) with zero occurrences, and sites (columns) with zero species are removed from m.
Usage
1 |
Arguments
m |
Community data matrix with species as rows and sites as columns. Can contain either incidences (1/0) or abundances (natural numbers). |
clean |
Logical. Do you want to remove zero-sum rows or columns? When the index needs the "d" fraction (sites where no species occurs), only zero-sum rows are removed. |
Value
A dist or data.frame objects with the pairwise association values.
References
Arita H. (2015) Multisite and multispecies measures of overlap, co-occurrence and co-diversity. Ecography 40: 709-718.
Dice L.R. (1945) Measures of the amount of ecological association between species. Ecology 94: 2403-2414.
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.
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