genlogFunction.Rd
This function builds a generalized logistic curve from a vector of data points and a set of parameters.
The function is used in
genlog
.
genlogFunction(x, x0, Ab, At, B, v)
x | A numeric vector with measurement moments or indices of measurement moments. |
---|---|
x0 | A single numeric value specifying at which moment the curve is at
its midpoint (when |
Ab, At | Respectively the lowest and highest possible values of the dependent variable. |
B | The growth rate (curve steepness). |
v | (parameter is currently not used, is fixed at 1) |
For details, see Verboon & Peters (2018).
Verboon, P. & Peters, G.-J. Y. (2018) Applying the Generalized Logistic Model in Single Case Designs: Modeling Treatment-Induced Shifts. Behavior Modification https://doi.org/10.1177/0145445518791255
Peter Verboon (Open University of the Netherlands)
Maintainer: Gjalt-Jorn Peters gjalt-jorn@userfriendlyscience.com
time <- 1:20; yVar <- genlogFunction(1:20, 10, 1, 7, 1, 1); plot(time, yVar, type='l', xlab='time', ylab='y');