[R] (no subject)

[malika yassa]

hello
> p(X ≤ V) diffetente zero
> look this
> Let X and V be two independent random variables with unknow
>  distribution functions (d.f.’s) F and G respectively. Under truncation from the right we observe (X, Z) only if X ≤ Z
> I simulate X and Z and I use Lynden bell estimation
> I need now to calculate alpha =p(X ≤ V)but no p(X ≤ V)=0
>  

> > 
> > 
> > 
> > for exampl, i have this programme
> > # Generating data which are right truncated
> > library(DTDA)
> > library(splines)
> > library(survival)
> > n<-25
> > X<-runif(n,0,1)
> > V<-runif(n,0.75,1)
> > for (i in 1:n){
> > while (X[i]>V[i]){
> > X[i]<-runif(1,0,1)
> > V[i]<-runif(1,0.75,1)
> > }}
> > res<-lynden(X=X,U=NA, V=V, boot=TRUE)
> > attach(res)
> > temps = time
> > M_i = n.event
> > L_t = res
> > F_t=1-L_t                                    
> > par(mfrow=c(1,1))
> > plot(L_t$time,L_t$survival,type="s",lty=2:3,lwd=2,las=1,cex.lab=1.1,font.lab=2,col="red",xlab="temps",ylab="L(t)",
> 
> > main="Esitmation de la Fonction de Survie L(t)")

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