search for: number_of_month

...t; Assuming I'm able to navigate R with a minimum degree of proficiency, where would I start with this? As you can doubtless tell, I'm not looking for anything sophisticated - just a reasonable estimate. Am I going to be able to do better than a projected per-month guess based on $total/$number_of_months? Thanks very much - _________________________________________________________________ Hotmail: Trusted email with powerful SPAM protection. [[alternative HTML version deleted]]

...lt;-merge(datNew,dat2,all=TRUE,by="responsed_at") ?res$responsed_at[is.na(res$id)]<-NA res$responsed_at[!is.na(res$responsed_at)]<- paste(gsub("(.*)\\-.*\\-.*","\\1",dat1$responsed_at),"-",res$responsed_at[!is.na(res$responsed_at)],sep="") res$number_of_month<- seq_len(nrow(res))-1 res #? responsed_at id number_of_connection scores number_of_month #1?? 12-01-2010? 1??????????????????? 1????? 2?????????????? 0 #2?? 15-02-2010? 1??????????????????? 2????? 3?????????????? 1 #3???????? <NA> NA?????????????????? NA???? NA?????????????? 2 #4?? 01-04...