Displaying 3 results from an estimated 3 matches for "aircrafttype".
2010 Feb 01
3
merging data frames gives all NAs
...ar4rw[1:2,] # first time through for 31R
DateTime Date month hour minute quarter weekday IATA ICAO
Flight
NA <NA> <NA> NA NA NA NA NA <NA> <NA> <NA>
529 1/1/09 21:46 2009-01-01 1 21 46 87 5 TA TAI
TAI570
AircraftType Tail Arrived STA Runway FromTo Delay
NA <NA> <NA> <NA> <NA> <NA> <NA> NA
529 A320 N496TA 21:46:58 22:30 31R MSLP /KJFK 0
Operator dq gw
NA <NA> <NA> NA
529 TACA INTERNATIONAL AIRLINES 2009-...
2010 Mar 20
3
How to select a row from one dataframe that is "close" to a row in another dataframe
..."
[13] "OnDate" "MinutesIntoDay"
[15] "OnHour" "pt"
> names(runway)
[1] "OnDateTime" "IATA" "ICAO" "Flight"
[5] "AircraftType" "Tail" "Arrived" "STA"
[9] "Runway" "From.To" "Delay" "OnDate"
[13] "MinutesIntoDay" "pt"
These sets have several hundred thousand rows....
2010 Jan 16
3
Comparing dates in dataframes
...he day when
the weather is good. arr has a Date and quarter hour column.
>names(arr)
[1] "Date" "weekday" "hour" "month" "minute"
[6] "quarter" "ICAO" "Flight" "AircraftType"
"Tail"
[11] "Arrived" "STA" "Runway" "FromTo"
"Delay"
[16] "Operator" "gw"
I added the gw column to arr and initialized it to all FALSE
>names(gw)
[1] "Date&q...