search for: mantyniemi

...--------------------------- Samu M?ntyniemi Researcher Fisheries and Environmental Management Group (FEM) Department of Biological and Environmental Sciences Biocenter 3, room 4414 Viikinkaari 1 P.O. Box 65 FIN-00014 University of Helsinki Phone: +358 9 191 58710 Fax: +358 9 191 58257 email: samu.mantyniemi helsinki.fi personal webpage: http://www.helsinki.fi/people/samu.mantyniemi/ FEM webpage: http://www.helsinki.fi/science/fem/

...----------- Samu M?ntyniemi University Researcher, PhD Fisheries and Environmental Management Group (FEM) Department of Biological and Environmental Sciences Biocenter 3, room 4414 Viikinkaari 1 P.O. Box 65 FIN-00014 University of Helsinki Phone: +358 9 191 58710 Fax: +358 9 191 58257 email: samu.mantyniemi at helsinki.fi personal webpage: http://www.helsinki.fi/people/samu.mantyniemi/ FEM webpage: http://www.helsinki.fi/science/fem/

Is there a way to force certain formula parameters to be nonnegative? What I want to do is to estimate student capacity over time, namely by > capacity ~ Student + Student:Day I add this formula to a glm call and obtain negative learning slope estimates (Student:Day) in some cases. However, I don't want to allow for that. In such a case, glm should solve > capacity ~ Student and

Hello, I have the TCl/Tk command "tkmessageBox(titel="",message="x",icon="question",type="okcancel")" in my R script. Now I want to perform some operation in relation to the user's choice, something like "if (okpressed) xxx else yyy" What values does this command give and how are they used? Thank you, Richard -- Richard M?ller -