expCurve: Exponential curve function
Description
Exponential function used in fitting nlme curve for observations
Usage
expCurve(dat, y, time, params = NULL, ...)
Arguments
- dat
subject data to be used
- y
outcome variable
- time
time variable
- params
NULL
unless user wants to specify starting parameters for gnls
- ...
just in case
Details
Remove any values of zero, or jitter, before using with bdotsFit
y ~ x_0 exp(k beta)