Dear developping team, I am a graduate student trying to fit a dose response curve for my thesis. I found one publication talking about the lc2-Modell in the drc Function (drm package), but I didn't find any related info how to create my data. fct = lc.2() "was not found" by my R. How do I get any info on that please? First, I tried the LL.2 model, but it doesnot really fit as my data are not logistically, but on a linear scale (values 4, 8, 12, 16, 20, 24, 28). Trying to contact the author of the publication failed so I couldn't think of any other way, I hope you can help me. Thanks a lot, Sincerely, Kathrin Schreglmann