EcoTroph (version 1.6.1)

Transpose: Transpose enables the conversion of data pertaining to specific taxa or functionnal groups into data by trophic class. Data can represent catches, biomasses or production in order to produce continuous distributions of those variables over trophic levels.

Description

Transpose enables the conversion of data pertaining to specific taxa or functionnal groups into data by trophic class. Data can represent catches, biomasses or production in order to produce continuous distributions of those variables over trophic levels.

Usage

Transpose(tab_smooth, tab_input, column)

Arguments

tab_smooth

is the table returned by the create.smooth function.

tab_input

is the input table based on Ecopath data or on independent data. The different variables are the group name, its trophic level, biomass, production on biomass ratio, catches, omnivory index and accessibility (fraction of the group that can be catch assuming an infinite fishing effort) if the input table corresponds to an EwE model. In other case, to simply build trophic spectra, only the group names, their trophic levels and related variables are necessary.

column

is the tab_input table column name of the variable the user wants to transpose (for example "biomass" or "catch").

See Also

create.smooth function to create the Smooth, plot.smooth to plot the smooth function, plot.Transpose to plot the associated trophic spectra.

Examples

# NOT RUN {
data(ecopath_guinee)
Transpose(create.smooth(ecopath_guinee),ecopath_guinee,"biomass")
Transpose(create.smooth(ecopath_guinee),ecopath_guinee,"catch.1")
# }