13C time series PDR data from three different groups in a randomized (= not-crossover) design. This are unpublished data from Gastroenterology and Hepatology, University Hospital Zurich.
Data are formatted as described in
usz_13c. These time series present
a challenge for algorithms.
library(dplyr) library(ggplot2) data(usz_13c_a) d = usz_13c_a %>% cleanup_data() %>% # recommended to test for validity nlme_fit() plot(d)