Hi
Without going to deeply to your code; your data seems to be numeric, but for
some reason you read them as character. You shall consult read.csv help and
your original data. They probably have some feature which prevent them to be
read correctly.
To your question, what you want can be achieved by while loop.
something like this
while (abs(studres(object))>3) {
ms <-max(abs(studres(object)))
del <- which(ms== abs(studres(object)))
#do fitting with del removed from data
#save the fit
}
you can also use rstudent(object)
Cheers
Petr
> -----Original Message-----
> From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of
> Methekar, Pushpa (GE Transportation, Non-GE)
> Sent: Tuesday, December 30, 2014 9:44 AM
> To: r-help@r-project.org
> Subject: [R] to create a fuction for removing outlier
>
> Hi all,
> Thanks for your support. sorry for inconvenience cause due to lack of
> information. here is my all r- program .
>
>
> #### read in data
> raw=read.csv(file.choose(),header = T, stringsAsFactors=FALSE)
>
> str(raw)
>
> ####conversion from factor to numeric of xs raw$Engine.Speed <-
> as.numeric(raw$Engine.Speed)
> raw$Engine.Power<- as.numeric(raw$Engine.Power) raw$Diesel.LHV <-
> as.numeric(raw$Diesel.LHV) raw$NG.LHV <- as.numeric(raw$NG.LHV)
> raw$Compressor.Inlet.Temperature <-
> as.numeric(raw$Compressor.Inlet.Temperature)
> raw$Int.Mfld.Temp<- as.numeric(raw$Int.Mfld.Temp)
> raw$Cmd.Advance.Angle<- as.numeric(raw$Cmd.Advance.Angle)
> raw$Cmd.Fuel.Rail.Press.Manual<-
> as.numeric(raw$Cmd.Fuel.Rail.Press.Manual)
> raw$X..NG.by.Energy<- as.numeric(sub("%","",raw$X..NG.by.Energy))/100
>
>
> ####conversion from factor to numeric of Ys raw$Pre.Turb.Temp.L <-
> as.numeric(raw$Pre.Turb.Temp.L) raw$Avg.PCP <- as.numeric(raw$Avg.PCP)
> raw$BSHC <- as.numeric(raw$BSHC) raw$BSCO <- as.numeric(raw$BSCO)
> raw$GETS.cBSNOx <- as.numeric(raw$GETS.cBSNOx) raw$Avg.COV.GIMEP <-
> as.numeric(raw$Avg.COV.GIMEP) raw$Intake.Manifold.Pressure <-
> as.numeric(raw$Intake.Manifold.Pressure)
> raw$Emiss..1..EPA.MAF..Dry. <-
> as.numeric(sub(",","",raw$Emiss..1..EPA.MAF..Dry.))
> raw$Turbo.Speed <- as.numeric(raw$Turbo.Speed)
>
>
> #### create a matrix plot of scatter plot
> xs=raw[c("Engine.Speed","X..NG.by.Energy","Int.Mfld.Temp","Cmd.Advance.
> Angle","Engine.Power","Cmd.Fuel.Rail.Press.Manual","Compressor.Inlet.Te
> mperature","Diesel.LHV","NG.LHV")]
>
> ys=raw[c("Pre.Turb.Temp.L","Avg.PCP","BSHC","BSCO","GETS.cBSNOx","Avg.C
> OV.GIMEP","Turbo.Speed","Intake.Manifold.Pressure","Emiss..1..EPA.MAF..
> Dry.")]
> pairs(xs,main="x's")
> pairs(ys,main="y's")
>
> ### calculate correlation coefficient
> xs[is.na(xs)] <- 0 #replace all NA with 0
> cor(xs)
> ys[is.na(ys)] <- 0 #replace all NA with 0
> cor(ys)
> cor(xs,ys,method = "spearman")
> pairs(xs,ys)
> save.image(file="plotting.RData")
>
>
> ## make data frame of x's and y's
> xsys=data.frame(xs,ys)
>
> library(MASS)
> #### first order multiple linear regression fitted.modely1.temp.l <-
> rlm(
> Pre.Turb.Temp.L~X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.
> Power+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LH
> V+NG.LHV,data=xsys)
>
> fitted.modely2.avg.pcp <- rlm(
> Avg.PCP~X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.Power+Cm
> d.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV+NG.LHV
> ,data=xsys)
>
> fitted.modely3.bshc <- rlm(
> BSHC~X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.Power+Cmd.F
> uel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV+NG.LHV,da
> ta=xsys)
>
> fitted.modely4.bsco <-
> rlm(BSCO~X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.Power+C
> md.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV+NG.LH
> V,data=xsys)
>
> fitted.modely5.gets <-
> rlm(GETS.cBSNOx~X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.
> Power+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LH
> V+NG.LHV,data=xsys)
>
> fitted.modely6.gimep <-
> rlm(Avg.COV.GIMEP~X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engin
> e.Power+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.
> LHV+NG.LHV,data=xsys)
>
> fitted.modely7.ts <- rlm( Turbo.Speed
> ~X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.Power+Cmd.Fuel.
> Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV+NG.LHV,data=x
> sys)
>
> fitted.modely8.imp <- rlm(Intake.Manifold.Pressure
> ~X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.Power+Cmd.Fuel.
> Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV+NG.LHV,data=x
> sys)
>
> fitted.modely9.maf <- rlm( Emiss..1..EPA.MAF..Dry.
> ~X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.Power+Cmd.Fuel.
> Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV+NG.LHV,data=x
> sys)
>
>
>
> #### comlete second order multiple linear regression
> secfitted.modely1.temp.l<-lm(Pre.Turb.Temp.L
> ~poly(Engine.Speed,2)+poly(X..NG.by.Energy,2)+poly(Int.Mfld.Temp,2)+pol
> y(Cmd.Advance.Angle,2)+poly(Engine.Power,2)+poly(Cmd.Fuel.Rail.Press.Ma
> nual,2)
>
> +poly(Compressor.Inlet.Temperature,2)+poly(Diesel.LHV,2)+poly(NG.LHV,2)
>
> +Engine.Speed*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +X..NG.by.Energy*(Engine.Speed+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Int.Mfld.Temp*(X..NG.by.Energy+Engine.Speed+Cmd.Advance.Angle+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Cmd.Advance.Angle*(X..NG.by.Energy+Int.Mfld.Temp+Engine.Speed+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Engine.Power*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.S
> peed+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Cmd.Fuel.Rail.Press.Manual*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.
> Angle+Engine.Power+Engine.Speed+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Compressor.Inlet.Temperature*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advanc
> e.Angle+Engine.Power+Cmd.Fuel.Rail.Press.Manual+Engine.Speed+Diesel.LHV
> +NG.LHV)
>
> +Diesel.LHV*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.Pow
> er+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Engine.Speed
> +NG.LHV)
>
> +NG.LHV*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.Power+C
> md.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV+Engin
> e.Speed),data=xsys)
>
> secfitted.modely2.avg.pcp<-lm(Avg.PCP
> ~poly(Engine.Speed,2)+poly(X..NG.by.Energy,2)+poly(Int.Mfld.Temp,2)+pol
> y(Cmd.Advance.Angle,2)+poly(Engine.Power,2)+poly(Cmd.Fuel.Rail.Press.Ma
> nual,2)
>
> +poly(Compressor.Inlet.Temperature,2)+poly(Diesel.LHV,2)+poly(NG.LHV,2)
>
> +Engine.Speed*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +X..NG.by.Energy*(Engine.Speed+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Int.Mfld.Temp*(X..NG.by.Energy+Engine.Speed+Cmd.Advance.Angle+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Cmd.Advance.Angle*(X..NG.by.Energy+Int.Mfld.Temp+Engine.Speed+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Engine.Power*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.S
> peed+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Cmd.Fuel.Rail.Press.Manual*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.
> Angle+Engine.Power+Engine.Speed+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Compressor.Inlet.Temperature*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advanc
> e.Angle+Engine.Power+Cmd.Fuel.Rail.Press.Manual+Engine.Speed+Diesel.LHV
> +NG.LHV)
>
> +Diesel.LHV*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.Pow
> er+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Engine.Speed
> +NG.LHV)
>
> +NG.LHV*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.Power+C
> md.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV+Engin
> e.Speed),data=xsys)
>
> secfitted.modely3.bshc<-lm( BSHC
> ~poly(Engine.Speed,2)+poly(X..NG.by.Energy,2)+poly(Int.Mfld.Temp,2)+pol
> y(Cmd.Advance.Angle,2)+poly(Engine.Power,2)+poly(Cmd.Fuel.Rail.Press.Ma
> nual,2)
>
> +poly(Compressor.Inlet.Temperature,2)+poly(Diesel.LHV,2)+poly(NG.LHV,2)
>
> +Engine.Speed*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +X..NG.by.Energy*(Engine.Speed+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Int.Mfld.Temp*(X..NG.by.Energy+Engine.Speed+Cmd.Advance.Angle+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Cmd.Advance.Angle*(X..NG.by.Energy+Int.Mfld.Temp+Engine.Speed+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Engine.Power*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.S
> peed+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Cmd.Fuel.Rail.Press.Manual*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.
> Angle+Engine.Power+Engine.Speed+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Compressor.Inlet.Temperature*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advanc
> e.Angle+Engine.Power+Cmd.Fuel.Rail.Press.Manual+Engine.Speed+Diesel.LHV
> +NG.LHV)
>
> +Diesel.LHV*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.Pow
> er+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Engine.Speed
> +NG.LHV)
>
> +NG.LHV*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.Power+C
> md.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV+Engin
> e.Speed),data=xsys)
>
>
> secfitted.modely4.bsco<-lm( BSCO
> ~poly(Engine.Speed,2)+poly(X..NG.by.Energy,2)+poly(Int.Mfld.Temp,2)+pol
> y(Cmd.Advance.Angle,2)+poly(Engine.Power,2)+poly(Cmd.Fuel.Rail.Press.Ma
> nual,2)
>
> +poly(Compressor.Inlet.Temperature,2)+poly(Diesel.LHV,2)+poly(NG.LHV,2)
>
> +Engine.Speed*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +X..NG.by.Energy*(Engine.Speed+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Int.Mfld.Temp*(X..NG.by.Energy+Engine.Speed+Cmd.Advance.Angle+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Cmd.Advance.Angle*(X..NG.by.Energy+Int.Mfld.Temp+Engine.Speed+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Engine.Power*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.S
> peed+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Cmd.Fuel.Rail.Press.Manual*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.
> Angle+Engine.Power+Engine.Speed+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Compressor.Inlet.Temperature*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advanc
> e.Angle+Engine.Power+Cmd.Fuel.Rail.Press.Manual+Engine.Speed+Diesel.LHV
> +NG.LHV)
>
> +Diesel.LHV*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.Pow
> er+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Engine.Speed
> +NG.LHV)
>
> +NG.LHV*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.Power+C
> md.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV+Engin
> e.Speed),data=xsys)
>
>
>
> secfitted.modely5.gets<-lm( GETS.cBSNOx
> ~poly(Engine.Speed,2)+poly(X..NG.by.Energy,2)+poly(Int.Mfld.Temp,2)+pol
> y(Cmd.Advance.Angle,2)+poly(Engine.Power,2)+poly(Cmd.Fuel.Rail.Press.Ma
> nual,2)
>
> +poly(Compressor.Inlet.Temperature,2)+poly(Diesel.LHV,2)+poly(NG.LHV,2)
>
> +Engine.Speed*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +X..NG.by.Energy*(Engine.Speed+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Int.Mfld.Temp*(X..NG.by.Energy+Engine.Speed+Cmd.Advance.Angle+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Cmd.Advance.Angle*(X..NG.by.Energy+Int.Mfld.Temp+Engine.Speed+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Engine.Power*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.S
> peed+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Cmd.Fuel.Rail.Press.Manual*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.
> Angle+Engine.Power+Engine.Speed+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Compressor.Inlet.Temperature*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advanc
> e.Angle+Engine.Power+Cmd.Fuel.Rail.Press.Manual+Engine.Speed+Diesel.LHV
> +NG.LHV)
>
> +Diesel.LHV*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.Pow
> er+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Engine.Speed
> +NG.LHV)
>
> +NG.LHV*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.Power+C
> md.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV+Engin
> e.Speed),data=xsys)
>
>
>
> secfitted.modely6.gimep<-lm( Avg.COV.GIMEP
> ~poly(Engine.Speed,2)+poly(X..NG.by.Energy,2)+poly(Int.Mfld.Temp,2)+pol
> y(Cmd.Advance.Angle,2)+poly(Engine.Power,2)+poly(Cmd.Fuel.Rail.Press.Ma
> nual,2)
>
> +poly(Compressor.Inlet.Temperature,2)+poly(Diesel.LHV,2)+poly(NG.LHV,2)
>
> +Engine.Speed*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +X..NG.by.Energy*(Engine.Speed+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Int.Mfld.Temp*(X..NG.by.Energy+Engine.Speed+Cmd.Advance.Angle+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Cmd.Advance.Angle*(X..NG.by.Energy+Int.Mfld.Temp+Engine.Speed+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Engine.Power*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.S
> peed+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Cmd.Fuel.Rail.Press.Manual*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.
> Angle+Engine.Power+Engine.Speed+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Compressor.Inlet.Temperature*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advanc
> e.Angle+Engine.Power+Cmd.Fuel.Rail.Press.Manual+Engine.Speed+Diesel.LHV
> +NG.LHV)
>
> +Diesel.LHV*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.Pow
> er+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Engine.Speed
> +NG.LHV)
>
> +NG.LHV*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.Power+C
> md.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV+Engin
> e.Speed),data=xsys)
>
> secfitted.modely7.ts<-lm( Turbo.Speed
> ~poly(Engine.Speed,2)+poly(X..NG.by.Energy,2)+poly(Int.Mfld.Temp,2)+pol
> y(Cmd.Advance.Angle,2)+poly(Engine.Power,2)+poly(Cmd.Fuel.Rail.Press.Ma
> nual,2)
>
> +poly(Compressor.Inlet.Temperature,2)+poly(Diesel.LHV,2)+poly(NG.LHV,2)
>
> +Engine.Speed*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +X..NG.by.Energy*(Engine.Speed+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Int.Mfld.Temp*(X..NG.by.Energy+Engine.Speed+Cmd.Advance.Angle+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Cmd.Advance.Angle*(X..NG.by.Energy+Int.Mfld.Temp+Engine.Speed+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Engine.Power*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.S
> peed+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Cmd.Fuel.Rail.Press.Manual*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.
> Angle+Engine.Power+Engine.Speed+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Compressor.Inlet.Temperature*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advanc
> e.Angle+Engine.Power+Cmd.Fuel.Rail.Press.Manual+Engine.Speed+Diesel.LHV
> +NG.LHV)
>
> +Diesel.LHV*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.Pow
> er+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Engine.Speed
> +NG.LHV)
>
> +NG.LHV*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.Power+C
> md.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV+Engin
> e.Speed),data=xsys)
>
>
>
> secfitted.modely8.imp<-lm( Intake.Manifold.Pressure
> ~poly(Engine.Speed,2)+poly(X..NG.by.Energy,2)+poly(Int.Mfld.Temp,2)+pol
> y(Cmd.Advance.Angle,2)+poly(Engine.Power,2)+poly(Cmd.Fuel.Rail.Press.Ma
> nual,2)
>
> +poly(Compressor.Inlet.Temperature,2)+poly(Diesel.LHV,2)+poly(NG.LHV,2)
>
> +Engine.Speed*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +X..NG.by.Energy*(Engine.Speed+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Int.Mfld.Temp*(X..NG.by.Energy+Engine.Speed+Cmd.Advance.Angle+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Cmd.Advance.Angle*(X..NG.by.Energy+Int.Mfld.Temp+Engine.Speed+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Engine.Power*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.S
> peed+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Cmd.Fuel.Rail.Press.Manual*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.
> Angle+Engine.Power+Engine.Speed+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Compressor.Inlet.Temperature*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advanc
> e.Angle+Engine.Power+Cmd.Fuel.Rail.Press.Manual+Engine.Speed+Diesel.LHV
> +NG.LHV)
>
> +Diesel.LHV*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.Pow
> er+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Engine.Speed
> +NG.LHV)
>
> +NG.LHV*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.Power+C
> md.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV+Engin
> e.Speed),data=xsys)
>
>
> secfitted.modely9.maf<-
> lm(Emiss..1..EPA.MAF..Dry.~poly(Engine.Speed,2)+poly(X..NG.by.Energy,2)
> +poly(Int.Mfld.Temp,2)+poly(Cmd.Advance.Angle,2)+poly(Engine.Power,2)+p
> oly(Cmd.Fuel.Rail.Press.Manual,2)
>
> +poly(Compressor.Inlet.Temperature,2)+poly(Diesel.LHV,2)+poly(NG.LHV,2)
>
> +Engine.Speed*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +X..NG.by.Energy*(Engine.Speed+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Int.Mfld.Temp*(X..NG.by.Energy+Engine.Speed+Cmd.Advance.Angle+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Cmd.Advance.Angle*(X..NG.by.Energy+Int.Mfld.Temp+Engine.Speed+Engine.P
> ower+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Engine.Power*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.S
> peed+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Cmd.Fuel.Rail.Press.Manual*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.
> Angle+Engine.Power+Engine.Speed+Compressor.Inlet.Temperature+Diesel.LHV
> +NG.LHV)
>
> +Compressor.Inlet.Temperature*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advanc
> e.Angle+Engine.Power+Cmd.Fuel.Rail.Press.Manual+Engine.Speed+Diesel.LHV
> +NG.LHV)
>
> +Diesel.LHV*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.Pow
> er+Cmd.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Engine.Speed
> +NG.LHV)
>
> +NG.LHV*(X..NG.by.Energy+Int.Mfld.Temp+Cmd.Advance.Angle+Engine.Power+C
> md.Fuel.Rail.Press.Manual+Compressor.Inlet.Temperature+Diesel.LHV+Engin
> e.Speed),data=xsys)
>
>
> ####stepwise forward regression for first order
>
> step(fitted.modely1.temp.l,direction="forward")
> step(fitted.modely2.avg.pcp,direction="forward")
> step(fitted.modely3.bshc,direction="forward")
> step(fitted.modely4.bsco,direction="forward")
> step(fitted.modely5.gets,direction="forward")
> step(fitted.modely6.gimep,direction="forward")
> step(fitted.modely7.ts,direction="forward")
> step(fitted.modely8.imp,direction="forward")
> step(fitted.modely9.maf,direction="forward")
>
>
> step(fitted.modely1.temp.l,direction="backward")
> step(fitted.modely2.avg.pcp,direction="backward")
> step(fitted.modely3.bshc,direction="backward")
> step(fitted.modely4.bsco,direction="backward")
> step(fitted.modely5.gets,direction="backward")
> step(fitted.modely6.gimep,direction="backward")
> step(fitted.modely7.ts,direction="backward")
> step(fitted.modely8.imp,direction="backward")
> step(fitted.modely9.maf,direction="backward")
>
>
> now after this step I want to find out outliers in each fitted model
> and remove them from xsys data set and update it .
> Ii want a function which will find one by one outlier and remove it .
> The condition is that outlier would be consider as outlier if its r
> student I greater than +3 and -3.
> I want all in loop and repeat loop till no outlier is remained.
> ______________________________________________
> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-
> guide.html
> and provide commented, minimal, self-contained, reproducible code.
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