Dear all, I'm trying to estimate some parameters with the optim() function but I need to restrict one parameter and I have not found how to do it. Could you help me please?my program is basically fn<-function(s) initial<-function(r) { cst<-r[1] cst1<-r[2] beta<-r[3] rho<-r[4] p1<-r[5] return(-sum()) } parms<-c() m0<-optim() I need to specify 0<=p1<=1. Thank you very much Luis SAGAON
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