search for: tailno

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...