Hi Elham, The error message is pretty explicit. Check your dataset for missing values.
Jim On Thu, Nov 23, 2017 at 6:14 AM, Elham Fakharizade via R-help <r-help@r-project.org> wrote: > > Hello DearI used modifiedmk package for trend analyses.this is my script > require(modifiedmk)X1<-read.table("c:/elham/first > article/r/Spring_NDVI-1.txt",skip=2,header=FALSE)d=dim(X1) > outMK<-matrix(-999,nrow=4,ncol=d[2])for (c in > 1:d[2]){MK<-tfpwmk(X1[,c])outMK[1,c]<-getElement(MK,"S")outMK[2,c]<-getElement(MK,"Var(S)")outMK[3,c]<-getElement(MK,"Sen's > Slope")outMK[4,c]<-getElement(MK,"P-value")} unfortunetally I got this error: > Error in if (S == 0) { : missing value where TRUE/FALSE needed > would you please help me to solve itSincerely yoursElham > > > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. ______________________________________________ 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.