saturation {EcoTroph} | R Documentation |
This function enables an other calculation for the sigma of the create.smooth function. Sigma is calculated on the base of a saturation function reflecting a biological reasoning about the variability of the TL within trophic classes: the variability increases with the TL and reaches a plateau after a certain TL.
saturation(sigma_inf = NULL, coeff = NULL, pas = NULL)
sigma_inf |
defines the value of the curve's plateau. |
coeff |
defines the value of the slope. |
pas |
defines the splitting of the TL classes. |
By default sigma is constant. This function enables an other user choice reflecting a different reasoning.
saturation returns a vector of values for the sigma used in the create.smooth function.
create.smooth function to create the Smooth, plot.smooth to plot the smooth function.
plot(saturation())
lines(saturation(0.2))
text(48,0.18,"sigma_inf=0.2")
lines(saturation(coeff=0.5))
text(48,0.35,"coeff=0.5")