Displaying 1 result from an estimated 1 matches for "tailno".
2006 Mar 20
2
subsetting and NAs
R-help,
I'm getting some unexpected behavior with subsetting a data frame
(aircraft flight data) that I can't sort out.
Here is a simplified version of my data frame and problem:
> flight
FlightID TailNo FlightDate HobbsTime FlightCost Date year
1 4497 6009K <NA> 2.2 330.0 <NA> NA
2 4498 6009K <NA> 0.8 120.0 <NA> NA
3 4499 6009K <NA> 0.9 135.0 <NA> NA
4...