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x20_1_tt_z_e4
2007 Oct 19
2
header
Hi everyone, I read the following data
> setwd("d:/")
> mydata <- read.table("mydata.txt", header=T)
> attach(mydata)
> mydata
name X20_1_TT_Z_e4 X20_2_TT_Z_e4
1 A1 102 22
2 A2 103 21
3 A3 107 20
> name
[1] A1 A2 A3
Levels: A1 A2 A3
> mode(name)
[1] "numeric"
Why name is a factor and numeric? and why I do have X before the variable namin X20_1_TT_Z_e4?...