[R] multiphasic growth curve analysis

2007-09-07 Thread Peter B. Mandeville
Dear Petr, I tried replying directly to you but my communication was rejected as spam. On second thought, it is possible that it is. Thank you very much for taking the time and interest to answer my enquiry to the R Help Group. My interest isn’t so much in the particular data set as

[R] multiphasic growth curve analysis

2007-09-04 Thread Peter B. Mandeville
Greetings R Help Group, How does one effect a multiphasic logistic growth model with 4 phases (e.g. Koops 1986; Weigel, Craig, Bidwell and Bates 1992; Grossman and Koops 2003) with R. Before writing to the group, the R help archives were searched, the web was searched with Google,