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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]...

...on at gmail.com> wrote: > > > 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 at 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]<-ge...