Re: [R] Logistic curve fitting with y values >1 (R version 2.15.2, OS is OS X 10.6.8)

2012-11-09 Thread Marc Schwartz
On Nov 9, 2012, at 12:52 PM, Jacob B. wrote: > Hello, > > I'm trying to fit a logistic curve to data but I'm having a hard time > discovering how. Every tutorial I've come across either assumes the > logistic curve has 0 > I simply have two vectors, a and b, of equal length with no missing > d

[R] Logistic curve fitting with y values >1 (R version 2.15.2, OS is OS X 10.6.8)

2012-11-09 Thread Jacob B.
Hello, I'm trying to fit a logistic curve to data but I'm having a hard time discovering how. Every tutorial I've come across either assumes the logistic curve has 0http://www.apsnet.org/EDCENTER/ADVANCED/TOPICS/ECOLOGYANDEPIDEMIOLOGYINR/DISEASEPROGRESS/Pages/NonlinearRegression.aspx, which assum