Dear R-helpers,
I am using a vrtest on time series data. My commands are as follows; read.table("B.txt",sep="\t",fill=TRUE, na.strings = "NA") require(vrtest) rm(list=ls(all=TRUE)) datamat <- read.table("B.txt",sep="\t",fill=TRUE, na.strings = "NA") column <- 1 nob <- nrow(datamat) y <- log(datamat[2:nob,column])-log(datamat[1:(nob-1),column]) After, the use of last command, I get the following message; in Math.factor(c(37L, 36L, 42L, 41L, 44L, 38L, 31L, 61L, 66L, 91L, : log not meaningful for factors My data is composed of one column. I would appreciate, if any one could provide me with some hints to get around the problem. Best regards, Ben
BNS CER "11,14" "11,11" "11,25" "11,22" "11,31" "11,15" "11,00" "11,88" "11,94" "12,44" "12,90" "12,94" "12,97" "12,80" "12,78" "13,14" "13,72" "13,12" "12,93" "12,62" "12,62" "12,22" "12,30" "12,12" "12,16" "11,89" "12,30" "12,37" "12,50" "12,50" "12,41" "12,72" "12,54" "12,44" "12,73" "12,94" "13,04" "13,16" "13,60" "13,58" "13,65" "13,67" "13,80" "13,87" "13,33" "13,32" "13,42" "13,51" "13,63" "13,90" "13,68" "13,57" "13,43" "13,61" "13,84" "13,48" "13,39" "12,83" "12,54" "12,59" "12,57" "12,15" "11,93" "11,98" "12,09" "11,91" "12,27" "12,12" "12,00" "12,35" "12,69" "12,83" "12,59" "12,64" "12,88" "12,90" "12,37" "12,97" "13,37" "13,41" "13,56" "13,59" "13,52" "13,53" "13,33" "13,22" "13,36" "13,43" "13,40" "13,45" "13,43" "13,36" "13,38" "13,27" "13,10" "13,02" "12,81" "12,70" "12,69" "12,66" "12,60" "12,64" "12,67" "12,67" "12,69" "12,81" "12,67" "12,36" "12,40" "12,39" "12,64" "12,87" "12,85" "12,85" "12,87" "12,92" "12,90" "12,88" "13,01" "12,70" "12,32" "12,53" "12,19" "11,98" "11,94" "12,00" "11,80" "11,92" "11,88" "12,00" "11,80" "12,09" "11,80" "11,82" "11,65" "11,42" "11,16" "11,40" "11,03" "11,04" "11,10" "10,61" "11,10" "11,50" "11,45" "11,35" "11,50" "12,03" "12,20" "12,13" "12,65" "12,79" "12,52" "12,79" "12,79" "12,56" "12,58" "12,33" "12,10" "12,55" "12,00" "11,74" "11,76" "11,85" "12,03" "12,27" "12,81" "12,47" "12,06" "11,92" "11,59" "11,80" "11,47" "11,59" "11,50" "11,61" "11,63" "11,35" "11,14" "11,00" "10,88" "11,00" "11,01" "10,90" "10,89" "10,74" "10,45" "10,30" "10,56" "10,85" "10,60" "10,83" "10,45" "10,29" "10,30" "9,75" "9,55" "10,23" "10,72" "10,22" "10,77" "11,25" "11,74" "11,43" "11,20" "10,83" "10,78" "11,00" "10,63" "10,15" "10,80" "10,78" "10,16" "9,45" "9,50" "9,91" "9,25" "8,68" "8,94" "9,30" "9,75" "9,10" "8,28" "7,95" "8,26" "7,60" "7,96" "8,78" "9,64" "9,60" "9,61" "9,76" "10,00" "10,34" "10,60" "10,54" "10,61" "10,53" "10,73" "10,43" "10,63" "10,51" "10,39" "10,46" "11,30" "12,21" "12,06" "12,33" "12,58" "12,68" "12,80" "13,53" "13,55" "13,30" "13,25" "13,53" "13,40" "13,06" "13,01" "12,83" "12,91" "13,07" "13,09" "13,90" "13,43" "13,61" "13,22" "13,36" "13,23" "13,38" "13,28" "13,18" "13,90" "14,31" "14,34" "14,58" "14,08" "14,45" "14,18" "14,15" "14,35" "13,90" "13,66" "15,13" "15,15" "15,55" "15,89" "16,08" "15,74" "15,63" "15,69" "15,66" "15,28" "15,22" "15,44" "15,08" "15,02" "15,23" "15,50" "15,25" "15,17" "16,20" "16,95" "16,65" "18,05" "18,65" "18,93" "18,98" "19,85" "20,26" "19,65" "19,08" "19,78" "18,83" "18,55" "18,38" "18,80" "19,57" "18,88" "18,65" "18,88" "19,83" "19,43" "19,56" "20,15" "20,18" "20,18" "19,25" "18,98" "18,90" "19,10" "19,59" "18,83" "18,85" "19,13" "20,05" "20,31" "20,65" "20,25" "20,45" "20,80" "20,90" "20,63" "20,65" "20,30" "20,10" "20,05" "20,25" "20,00" "19,98" "19,90" "19,60" "19,74" "19,83"
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