Kas rxLinMod() on võimalus käivitada mitu regressioon "," rühma?
rxLinMod() ei ole seda võimalust otse. Üks viis seda teha oleks rxSplit() funktsiooni abil saate luua eraldi XDF faile, üks iga grupi kordumatu väärtus ja seejärel kõne rxLinMod() tsükkel arvutada erinevate regressioon iga split XDF faili.
Näiteks kasutades suur lennufirma andmeid saab alla laadida siit http://packages.revolutionanalytics.com/datasets/
Looge 7 erinevat XDF faili, üks nädal iga päev. Seejärel arvutatakse iga päev nädala lineaarne regressiooni mudel.
rxGetVarInfo( "C:/MyRData/AirlineData87to08.xdf") Var 1: Year
22 factor levels: 1987 1988 1989 1990 1991 ... 2004 2005 2006 2007 2008
Var 2: Month
12 factor levels: January February March April May ... August September October November December
Var 3: DayofMonth
31 factor levels: 1 2 3 4 5 ... 27 28 29 30 31
Var 4: DayOfWeek
7 factor levels: Monday Tuesday Wednesday Thursday Friday Saturday Sunday
Var 5: DepTime, Type: integer, Low/High: (0, 29)
Var 6: CRSDepTime, Type: integer, Low/High: (0, 24)
Var 7: ArrTime, Type: integer, Low/High: (0, 29)
Var 8: CRSArrTime, Type: integer, Low/High: (0, 24)
Var 9: UniqueCarrier
29 factor levels: PS TW UA WN EA ... HA OH F9 YV 9E
Var 10: FlightNum
8160 factor levels: 1451 1453 1454 1455 1457 ... 9742 9743 6813 6913 6513
Var 11: TailNum
13537 factor levels: NA N7298U N7449U N7453U N7288U ... N516AS N763JB N766JB N75428 N75429
Var 12: ActualElapsedTime, Type: integer, Low/High: (-719, 1883)
Var 13: CRSElapsedTime, Type: integer, Low/High: (-1240, 1613)
Var 14: AirTime, Type: integer, Low/High: (-3818, 3508)
Var 15: ArrDelay, Type: integer, Low/High: (-1437, 2598)
Var 16: DepDelay, Type: integer, Low/High: (-1410, 2601)
Var 17: Origin
347 factor levels: SAN SFO BUR OAK LAX ... ROW GCC RKS MKG OTH
Var 18: Dest
352 factor levels: SFO RNO OAK BUR LAX ... PIR GCC RKS MKG OTH
Var 19: Distance, Type: integer, Low/High: (0, 4983)
Var 20: TaxiIn, Type: integer, Low/High: (0, 1523)
Var 21: TaxiOut, Type: integer, Low/High: (0, 3905)
Var 22: Cancelled, Type: logical, Low/High: (0, 1)
Var 23: CancellationCode
4 factor levels: A B C D
Var 24: Diverted, Type: logical, Low/High: (0, 1)
Var 25: CarrierDelay, Type: integer, Low/High: (0, 2580)
Var 26: WeatherDelay, Type: integer, Low/High: (0, 1510)
Var 27: NASDelay, Type: integer, Low/High: (-60, 1392)
Var 28: SecDelay, Type: integer, Low/High: (0, 533)
Var 29: LateAircraftDelay, Type: integer, Low/High: (0, 1407)
Var 30: Late, Type: logical, Low/High: (0, 1)
Var 31: LateNew
2 factor levels: 1 0
rxSplit(inData = "C:/MyRData/AirlineData87to08.xdf", splitByFactor = "DayOfWeek", outFilesBase = "")
lmresults <- vector("list", length = 0L)
for (i in 1:length(myinfo$DayOfWeek)[[5]]
{
dataFile = paste("C:/MyRData/AirlineData87to08-ByDay.DayOfWeek.",myfac[i],".xdf", sep = "")
lmresults[[i]] <- rxLinMod(ArrDelay ~ CRSDepTime, data = dataFile)
assign("lmresults", lmresults, pos = 1)
}
