Dear lists,
   
  any suggestion on how to write a function to return a TRUE if interval [a,b] overlaps the interval [c,d]. I've tried it but an error occur saying that 'could not find function v ; in addition warning message occur'. Below is my codes.Please help me sort this problem as i'm in process of learning of writing a function. Many thanks
   
  overlap<-function(m,n){
t=length(m)
v=length(n)
tt=logical(t)
tv=logical(v)
 for(i in 1:m){
  for(i in 1:n){
  if(v(i,j)<=t(i,j)){
     tt=T
     tv=T
   }
  }
 }
k=c(tt,tv)
return(k)
}
   
  Regards,
  Anisah

       
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