[R] Different length of objects
voodooochild@gmx.de
voodooochild at gmx.de
Sat Jan 14 16:08:43 CET 2006
Hello,
i got an warning message in the following code:
f<-1:100
t<-1:100
b<-100
ll2 <- function(b,f,t) {
t<-cumsum(t)
tn<-t[length(t)]
i<-seq(along=f)
s1<-(tn*exp(-b*tn)*sum(f[i]))/(1-exp(-b*tn))
s2<-sum((f[i]*(t[i]*exp(-b*t[i])-t[i-1]*exp(b*t[i-1])))/(exp(-b*t[i-1])-exp(-b*t[i])))
s1-s2
}
ll2(b,f,t)
i think, the problem here is, that t[0] doesn't exist and so i got
different length of objects. want can i do to avoid this error?
the assumption is that t[0] should be 0.
best regards
andreas
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